{"title":"Fosi Audio Headphone Amplifiers","description":"\u003cp style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/listenup.com\/pages\/fosi-audio\"\u003eFosi Audio\u003c\/a\u003e headphone amplifiers deliver powerful, detailed sound that brings out the best in your favorite headphones. \u003cbr\u003eCombining high-quality audio components, versatile connectivity, and sleek modern designs, \u003cbr\u003eFosi Audio makes premium headphone listening more accessible than ever.\u003c\/p\u003e","products":[{"product_id":"fosi-audio-k7-desktop-dac-amp-headphone-amplifier","title":"Fosi Audio K7 Desktop DAC \u0026amp; Headphone Amplifier","description":"\u003ch3\u003eFosi Audio K7 Desktop DAC \u0026amp; Headphone Amplifier\u003c\/h3\u003e  \u003cp\u003eUpgrade your desktop audio experience with the Fosi Audio K7 Desktop DAC \u0026amp; Headphone Amplifier, a versatile all-in-one solution designed for high-fidelity music listening, gaming, and everyday entertainment. Combining a premium AKM AK4493SEQ DAC, XMOS XU208 USB processor, and powerful headphone amplification, the K7 delivers detailed, low-distortion sound with support for high-resolution PCM audio up to 32-bit\/384kHz and native DSD256. With up to 2,100mW per channel through its 4.4mm balanced headphone output, the K7 provides the power and precision needed to drive a wide range of headphones while maintaining excellent clarity and dynamic performance.\u003c\/p\u003e  \u003cp\u003eDesigned to serve as the centerpiece of a modern desktop audio system, the K7 offers USB-C, optical, coaxial, and Bluetooth 5.0 connectivity with support for aptX HD and aptX Low Latency. A dedicated 3.5mm microphone input with noise reduction makes it equally useful for online gaming, voice chat, and communication. Choose between 3.5mm single-ended and 4.4mm balanced headphone outputs, or connect powered speakers and external amplifiers using the RCA line outputs. Compatible with PCs, Macs, PlayStation consoles, Nintendo Switch, and other supported digital audio devices, the K7 brings flexibility to nearly any listening environment.\u003c\/p\u003e  \u003cp\u003eBuilt around a fully balanced circuit design, the Fosi Audio K7 achieves exceptionally low distortion while incorporating high\/low gain settings, adjustable bass and treble controls, and an EQ bypass mode for a more direct listening experience. Its precision-machined aluminum alloy chassis features an angled ergonomic design, two large multifunction control knobs, dedicated shortcut buttons, and a 1.5-inch display that provides clear information about playback formats, inputs, and settings. Whether you're enjoying high-resolution music, competing in your favorite game, or building a compact desktop Hi-Fi system, the K7 combines powerful performance with convenient everyday operation.\u003c\/p\u003e  \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fosi Audio\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e K7\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Desktop DAC, headphone amplifier, and gaming audio interface\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDAC Chip:\u003c\/strong\u003e AKM AK4493SEQ\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Processor:\u003c\/strong\u003e XMOS XU208\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Chip:\u003c\/strong\u003e Qualcomm QCC3031\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Amplifier Chip:\u003c\/strong\u003e TPA6120\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCircuit Design:\u003c\/strong\u003e Fully balanced audio circuitry with low-noise LDO voltage regulators\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Resolution:\u003c\/strong\u003e Up to 32-bit\/384kHz PCM and DSD256\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOptical Audio Resolution:\u003c\/strong\u003e Up to 24-bit\/192kHz PCM\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCoaxial Audio Resolution:\u003c\/strong\u003e Up to 24-bit\/192kHz PCM\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Audio Resolution:\u003c\/strong\u003e Up to 24-bit\/48kHz PCM\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDigital Audio Inputs:\u003c\/strong\u003e USB-C, optical, coaxial, Bluetooth\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMicrophone Input:\u003c\/strong\u003e 3.5mm microphone connection with noise reduction\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Outputs:\u003c\/strong\u003e 3.5mm single-ended and 4.4mm balanced\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLine Output:\u003c\/strong\u003e Stereo RCA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupported Headphone Impedance:\u003c\/strong\u003e 16–300 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Headphone Output Power:\u003c\/strong\u003e At least 2,100mW per channel at 32 ohms, THD+N below 1%\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Output Signal-to-Noise Ratio:\u003c\/strong\u003e 121dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Output THD+N:\u003c\/strong\u003e Less than 0.0002% (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Output Dynamic Range:\u003c\/strong\u003e 121dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Output Noise Floor:\u003c\/strong\u003e 6.5µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Output Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.2dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-Ended Headphone Output Power:\u003c\/strong\u003e At least 600mW per channel at 32 ohms, THD+N below 1%\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-Ended Output Signal-to-Noise Ratio:\u003c\/strong\u003e 122dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-Ended Output THD+N:\u003c\/strong\u003e 0.0005% (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-Ended Output Dynamic Range:\u003c\/strong\u003e 121dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-Ended Output Noise Floor:\u003c\/strong\u003e 2.5µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-Ended Output Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.2dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Output Level:\u003c\/strong\u003e At least 2Vrms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Signal-to-Noise Ratio:\u003c\/strong\u003e 121dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA THD+N:\u003c\/strong\u003e 0.0005% (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Dynamic Range:\u003c\/strong\u003e 121dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Noise Floor:\u003c\/strong\u003e 3µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.2dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Version:\u003c\/strong\u003e 5.0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Audio Codecs:\u003c\/strong\u003e SBC, AAC, aptX, aptX HD, aptX Low Latency\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Wireless Range:\u003c\/strong\u003e Up to 13 meters under suitable conditions\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGain Settings:\u003c\/strong\u003e High and low headphone gain\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTone Controls:\u003c\/strong\u003e Adjustable bass and treble\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEQ Bypass:\u003c\/strong\u003e Direct-signal mode bypasses internal bass and treble adjustments\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMicrophone Functions:\u003c\/strong\u003e Adjustable microphone volume and mute support in USB Audio Class 1.0 mode\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Modes:\u003c\/strong\u003e UAC 1.0 and UAC 2.0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUAC 1.0 Audio:\u003c\/strong\u003e 16-bit\/48kHz with microphone communication support\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 1.5-inch high-resolution status display\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Dual multifunction knobs, input\/output selection, power\/UAC selection, tone\/microphone adjustment, and EQ bypass controls\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay Information:\u003c\/strong\u003e Input source, output mode, PCM\/DSD format, sampling rate, Bluetooth codec, EQ settings, and microphone status\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eChassis:\u003c\/strong\u003e CNC-machined aluminum alloy with an angled desktop design\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eComputer Compatibility:\u003c\/strong\u003e Windows, macOS, and Linux\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGaming Compatibility:\u003c\/strong\u003e Compatible with supported PlayStation and Nintendo Switch USB audio connections\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Driver Requirements:\u003c\/strong\u003e Standard PCM playback is plug-and-play on supported modern Windows and macOS systems; drivers may be required for older Windows versions or DSD playback\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFirmware Updates:\u003c\/strong\u003e XMOS firmware updates supported through USB-C\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e DC 12V\/2A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e USB-A\/C to USB-C cable, Bluetooth antenna, Y-splitter cable, 12V power adapter, and user manual\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eWhat It's Great At\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Music Playback:\u003c\/strong\u003e The AKM AK4493SEQ DAC and XMOS XU208 processor support PCM up to 32-bit\/384kHz and DSD256, delivering detailed digital-to-analog conversion for high-quality music listening.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePowerful Balanced Headphone Amplification:\u003c\/strong\u003e Delivering at least 2,100mW per channel at 32 ohms through its 4.4mm balanced output, the K7 provides substantial amplification for demanding wired headphones.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile Desktop Connectivity:\u003c\/strong\u003e USB-C, optical, coaxial, Bluetooth, dual headphone outputs, and RCA connections make the K7 an adaptable centerpiece for music, gaming, and desktop audio systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGaming and Voice Communication:\u003c\/strong\u003e The dedicated 3.5mm microphone input, noise reduction, microphone volume adjustment, and UAC 1.0 compatibility support clear communication during compatible gaming and voice-chat applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCustomizable Sound and Convenient Controls:\u003c\/strong\u003e Adjustable bass, treble, headphone gain, and EQ bypass settings allow listeners to tailor playback without relying on complicated software menus.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePremium Desktop Design:\u003c\/strong\u003e A durable aluminum chassis, angled control surface, multifunction knobs, and 1.5-inch display combine modern aesthetics with practical everyday operation.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: What is the Fosi Audio K7 used for?\u003c\/strong\u003e\u003cbr\u003e A: The Fosi Audio K7 is a desktop digital-to-analog converter and headphone amplifier designed for high-resolution music playback, gaming, and general computer audio. It can power wired headphones, receive audio from multiple digital sources, and connect to powered speakers or external amplifiers through RCA outputs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can the Fosi Audio K7 drive high-impedance headphones?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The K7 supports headphones with impedances ranging from 16 to 300 ohms and provides up to at least 2,100mW per channel at 32 ohms through its balanced output. Its high and low gain settings help accommodate headphones with different amplification requirements.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio K7 support balanced headphones?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The K7 features a dedicated 4.4mm balanced headphone output and a standard 3.5mm single-ended output. The balanced connection offers substantially higher rated output power when used with compatible headphones and a properly wired balanced cable.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio K7 support Bluetooth audio?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The K7 features Bluetooth 5.0 with support for SBC, AAC, aptX, aptX HD, and aptX Low Latency codecs. It can receive wireless audio from compatible smartphones, tablets, and computers for playback through connected wired headphones or an external audio system.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I connect the Fosi Audio K7 to a PlayStation or Nintendo Switch?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The K7 supports compatible PlayStation and Nintendo Switch USB audio connections using USB Audio Class 1.0 mode. This mode also supports microphone communication at 16-bit\/48kHz with the appropriate headset or microphone connections.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I connect powered speakers to the Fosi Audio K7?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The K7 includes stereo RCA line outputs for connecting powered speakers, integrated amplifiers, or other compatible audio equipment. Use the output selector to switch between headphone playback and RCA line output.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I adjust the bass and treble on the Fosi Audio K7?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The K7 features adjustable bass and treble controls for customizing your listening experience. An EQ bypass function allows you to disable the tone adjustments when you prefer a more direct audio signal.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio K7 require drivers to work with a computer?\u003c\/strong\u003e\u003cbr\u003e A: Standard PCM playback is plug-and-play with supported modern Windows and macOS computers. Certain older Windows operating systems or DSD playback configurations may require additional drivers. The K7 also supports USB Audio Class 1.0 and 2.0 modes for different playback and compatibility requirements.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":62887245381791,"sku":"FOS-K7-BLK","price":199.99,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":62887245414559,"sku":"FOS-K7-SIL","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/c1f40199-7fb6-41fd-bedf-f6ec5e4cb3a8.jpg?v=1791557965"},{"product_id":"fosi-audio-stepsense-c3-gaming-audio-dac-headphone-amplifier","title":"Fosi Audio StepSense C3 Gaming Audio DAC \u0026 Headphone Amplifier","description":"\u003ch3\u003eFosi Audio StepSense C3 Gaming Audio DAC \u0026amp; Headphone Amplifier\u003c\/h3\u003e  \u003cp\u003eTake your gaming audio to the next level with the Fosi Audio StepSense C3 Gaming Audio DAC \u0026amp; Headphone Amplifier, an intelligent desktop audio solution designed for competitive gaming, immersive entertainment, and high-resolution music listening. Featuring Fosi Audio's proprietary StepSense AI technology, the C3 analyzes in-game audio in real time to identify and enhance critical sounds such as enemy footsteps by 3–9dB with just 10ms of processing latency. Unlike traditional EQ adjustments that boost entire frequency ranges, StepSense intelligently emphasizes footsteps without unnecessarily amplifying gunfire, explosions, or other background effects, helping players identify enemy locations and react with greater confidence.\u003c\/p\u003e  \u003cp\u003eBuilt with audiophile-grade components, the C3 combines an XMOS XU316 USB audio processor, Cirrus Logic CS43131 DAC, and dual Texas Instruments TPA6120 headphone amplifier chips to deliver detailed, low-distortion sound with accurate imaging and excellent clarity. Supporting high-resolution PCM audio up to 32-bit\/384kHz and native DSD256 through USB Audio Class 2.0, the C3 is equally capable of handling demanding music collections and immersive gaming soundtracks. Its 3.5mm headphone output delivers at least 320mW per channel into 32 ohms, while hardware-level 7.1 virtual surround processing creates a more expansive, directional listening experience with compatible multichannel games and movies.\u003c\/p\u003e  \u003cp\u003eDesigned for seamless integration into modern gaming setups, the StepSense C3 features USB-C, optical, and coaxial digital inputs, a dedicated 3.5mm microphone input, and stereo RCA outputs for connecting powered speakers or external amplifiers. AI-powered microphone noise reduction suppresses distracting keyboard clicks, fan noise, and other environmental sounds by up to 40dB for clearer communication during gaming, streaming, and voice calls. Independent headphone and microphone volume controls, one-touch microphone muting, and sidetone monitoring provide convenient control over your gaming audio.\u003c\/p\u003e  \u003cp\u003eThe Fosi Audio C3 also offers customizable parametric EQ, game-specific sound presets, and a browser-based control interface that lets you adjust audio settings without installing traditional desktop software. Its compact aluminum alloy chassis features an ergonomic 5-degree angled design with tactile buttons and sliders for quick adjustments during gameplay. Compatible with Windows PCs, Macs, PlayStation 5, Nintendo Switch, and a wide range of wired headsets and desktop audio systems, the C3 combines competitive gaming enhancements with high-fidelity audio performance in one versatile desktop device.\u003c\/p\u003e  \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fosi Audio\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e StepSense C3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Gaming sound card, digital-to-analog converter, and headphone amplifier\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Processor:\u003c\/strong\u003e XMOS XU316\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDAC Chip:\u003c\/strong\u003e Cirrus Logic CS43131\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Amplifier Chips:\u003c\/strong\u003e Dual Texas Instruments TPA6120\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAI Audio Processing:\u003c\/strong\u003e StepSense AI footstep detection and enhancement\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFootstep Enhancement:\u003c\/strong\u003e 3–9dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStepSense Processing Latency:\u003c\/strong\u003e Approximately 10ms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAI Processing:\u003c\/strong\u003e On-device hardware processing without relying on host computer CPU resources\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOptimized Gaming Profiles:\u003c\/strong\u003e Includes PUBG and Counter-Strike 2 profiles, with additional optimization supported through updates\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpatial Audio:\u003c\/strong\u003e Hardware-level 7.1 virtual surround sound for compatible 5.1 and 7.1 multichannel sources\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Modes:\u003c\/strong\u003e AI FPS, 7.1 Virtual Surround, Parametric EQ, and Bypass\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Mode Limitations:\u003c\/strong\u003e AI FPS and 7.1 Virtual Surround require UAC 1.0; AI FPS, 7.1 Virtual Surround, and PEQ cannot operate simultaneously\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Modes:\u003c\/strong\u003e USB Audio Class 1.0 and USB Audio Class 2.0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUAC 2.0 Audio Resolution:\u003c\/strong\u003e PCM up to 32-bit\/384kHz and DSD256\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUAC 1.0 Audio Resolution:\u003c\/strong\u003e PCM up to 16-bit\/48kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOptical Input Resolution:\u003c\/strong\u003e PCM up to 24-bit\/192kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCoaxial Input Resolution:\u003c\/strong\u003e PCM up to 24-bit\/192kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDigital Inputs:\u003c\/strong\u003e USB-C, optical (TOSLINK), coaxial\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMicrophone Input:\u003c\/strong\u003e 3.5mm microphone jack\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output:\u003c\/strong\u003e 3.5mm single-ended\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLine Output:\u003c\/strong\u003e Stereo RCA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSimultaneous Outputs:\u003c\/strong\u003e 3.5mm headphone and RCA outputs operate in parallel and cannot be independently enabled or disabled\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupported Headphone Impedance:\u003c\/strong\u003e 16–300 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Power:\u003c\/strong\u003e At least 320mW + 320mW at 32 ohms, THD+N below 1%\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Signal-to-Noise Ratio:\u003c\/strong\u003e 123dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output THD+N:\u003c\/strong\u003e 0.0004% (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Dynamic Range:\u003c\/strong\u003e 123dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Noise Floor:\u003c\/strong\u003e 3µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.06dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Line Output Level:\u003c\/strong\u003e At least 2Vrms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Signal-to-Noise Ratio:\u003c\/strong\u003e 124dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA THD+N:\u003c\/strong\u003e 0.0005% (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Dynamic Range:\u003c\/strong\u003e 124dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Noise Floor:\u003c\/strong\u003e 3µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.06dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMicrophone Noise Reduction:\u003c\/strong\u003e AI-powered noise suppression up to 40dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNoise Reduction Control:\u003c\/strong\u003e Dedicated rear-panel toggle; available in UAC 1.0 mode\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNoise Reduction Latency:\u003c\/strong\u003e May add up to 50ms of microphone communication latency\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMicrophone Controls:\u003c\/strong\u003e Independent microphone volume, one-touch mute, and sidetone monitoring in UAC 1.0 mode\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadset Compatibility:\u003c\/strong\u003e Supports compatible wired 3.5mm gaming headsets using the included microphone\/headphone splitter cable\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEqualization:\u003c\/strong\u003e Customizable multiband parametric EQ with presets and shareable sound profiles\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePEQ Compatibility:\u003c\/strong\u003e UAC 1.0, UAC 2.0, optical, and coaxial input modes\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBypass Mode:\u003c\/strong\u003e Disables internal EQ and sound effects for unprocessed audio playback\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eControl Interface:\u003c\/strong\u003e Browser-based Fosi Audio companion app\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWeb App:\u003c\/strong\u003e https:\/\/cc.fosiaudio.com\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWeb App Compatibility:\u003c\/strong\u003e Windows and macOS computers\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePhysical Controls:\u003c\/strong\u003e Power\/input selection, UAC mode selection, sound mode selection, headphone volume, microphone volume, microphone mute\/monitoring, and AI noise reduction toggle\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStatus Indicators:\u003c\/strong\u003e LED indicators for input, audio format, UAC settings, sound modes, and microphone functions\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eComputer Compatibility:\u003c\/strong\u003e Windows 7, 8, 8.1, 10, 11, macOS 10.6 or later, and Linux\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGaming Console Compatibility:\u003c\/strong\u003e PlayStation 5 and Nintendo Switch through compatible UAC 1.0 USB audio connections\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDriver Requirements:\u003c\/strong\u003e Standard audio playback is generally plug-and-play on compatible systems; DSD playback may require additional drivers or software configuration\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFirmware Updates:\u003c\/strong\u003e USB-C firmware updates through the Fosi Audio web application\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Input:\u003c\/strong\u003e DC 5V via USB-C\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e USB bus-powered\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eChassis Material:\u003c\/strong\u003e Aluminum alloy\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Compact desktop enclosure with 5-degree angled control surface\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 24-month limited manufacturer warranty\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 6976136961284\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e USB-A\/C to USB-C cable, 3.5mm Y-splitter cable, and user manual\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eWhat It's Great At\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAI-Powered Footstep Detection:\u003c\/strong\u003e Proprietary StepSense technology identifies and enhances enemy footsteps by 3–9dB with approximately 10ms processing latency, helping competitive FPS players recognize important positional audio cues.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImmersive 7.1 Virtual Surround Sound:\u003c\/strong\u003e Hardware-based spatial processing converts compatible multichannel game and movie audio into an expansive two-channel listening experience with improved directional awareness.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Gaming and Music Audio:\u003c\/strong\u003e The combination of XMOS XU316 processing, a Cirrus Logic CS43131 DAC, and dual TPA6120 amplifier chips delivers detailed audio with support for PCM up to 32-bit\/384kHz and DSD256.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClearer Gaming Communication:\u003c\/strong\u003e AI-powered microphone noise reduction suppresses unwanted background sounds by up to 40dB, while independent microphone volume, mute, and monitoring controls keep communication convenient.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCustomizable Sound Profiles:\u003c\/strong\u003e Browser-based parametric EQ and selectable sound modes let players adjust their listening experience for competitive gaming, movies, or high-fidelity music playback.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlexible Desktop and Console Connectivity:\u003c\/strong\u003e USB-C, optical, coaxial, dedicated microphone input, headphone output, and RCA connections provide versatile compatibility with computers, supported gaming consoles, wired headphones, and powered speakers.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: What is the Fosi Audio StepSense C3 used for?\u003c\/strong\u003e\u003cbr\u003e A: The Fosi Audio StepSense C3 is a gaming DAC, headphone amplifier, and external sound card designed to improve audio clarity, directional awareness, and communication during gameplay. It also functions as a high-resolution desktop DAC for music listening and connects to compatible headphones, gaming headsets, and powered speakers.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: How does StepSense AI footstep enhancement work?\u003c\/strong\u003e\u003cbr\u003e A: StepSense uses a dedicated on-device AI algorithm to recognize and enhance footsteps in supported FPS games. It boosts detected footsteps by 3–9dB with approximately 10ms processing latency, helping players hear subtle movement without broadly increasing the volume of explosions, gunfire, or ambient effects. StepSense requires UAC 1.0 mode.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio C3 support 7.1 surround sound?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The C3 supports hardware-level 7.1 virtual surround processing that converts compatible 5.1 and 7.1 multichannel audio into a spatial two-channel headphone experience. This feature operates in UAC 1.0 mode with supported multichannel content and is not applied to ordinary stereo sources.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I use the Fosi Audio C3 with a PlayStation 5 or Nintendo Switch?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The C3 supports compatible PlayStation 5 and Nintendo Switch USB audio connections using UAC 1.0 mode. This mode provides 16-bit\/48kHz audio and supports microphone communication with a properly connected compatible headset.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio C3 improve microphone quality?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The C3 features AI-powered microphone noise reduction designed to suppress background sounds such as keyboard clicks and computer fan noise by up to 40dB. It also includes independent microphone volume, mute, and sidetone monitoring functions in UAC 1.0 mode.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I use the Fosi Audio C3 for high-resolution music listening?\u003c\/strong\u003e\u003cbr\u003e A: Absolutely. In UAC 2.0 mode, the C3 supports PCM audio up to 32-bit\/384kHz and DSD256. For music listening, users can select Bypass mode to disable audio processing or adjust the parametric EQ to customize the sound.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I connect powered speakers to the Fosi Audio C3?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The C3 includes stereo RCA line outputs for connecting powered speakers, integrated amplifiers, and other compatible audio equipment. The headphone and RCA outputs operate simultaneously rather than offering independent output selection.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Do I need to install software to customize the Fosi Audio C3?\u003c\/strong\u003e\u003cbr\u003e A: No traditional desktop application installation is required for the main sound customization features. Connect the C3 to a compatible Windows or macOS computer and visit https:\/\/cc.fosiaudio.com to access the browser-based interface, select sound profiles, adjust parametric EQ settings, and manage supported firmware updates. Certain DSD playback configurations may require additional audio drivers or software.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":62887246233759,"sku":"FOS-C3-BLK","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/65385954-8d28-412d-ba31-8083b332cc24.jpg?v=1791558575"},{"product_id":"fosi-audio-md3-magdac-portable-dac-headphone-amplifier","title":"Fosi Audio MD3 MagDAC Portable DAC \u0026 Headphone Amplifier","description":"\u003ch3\u003eFosi Audio MD3 MagDAC Portable DAC \u0026amp; Headphone Amplifier\u003c\/h3\u003e  \u003cp\u003eExperience high-resolution audio wherever you go with the Fosi Audio MD3 MagDAC Portable DAC \u0026amp; Headphone Amplifier, an innovative magnetic USB-C DAC designed to bring premium sound quality, convenience, and personalization to your everyday listening. Featuring a flagship ESS Sabre ES9039Q2M DAC and four ESS ES9603Q amplifier chips, the MD3 delivers detailed, low-distortion audio with support for PCM up to 32-bit\/384kHz and native DSD256. With a compact magnetic design, customizable rear display, and both 3.5mm single-ended and 4.4mm balanced headphone outputs, the MD3 transforms compatible smartphones, tablets, and computers into high-performance portable listening systems.\u003c\/p\u003e  \u003cp\u003eDesigned for music lovers who want exceptional sound without carrying bulky equipment, the MD3 features a strong N52 magnetic attachment system that securely connects to compatible MagSafe-style smartphones and cases. Its lightweight, pocket-sized construction weighs approximately 50 grams and features rounded corners with a premium leather-finished surface for a comfortable, refined appearance. Whether you're commuting, traveling, working, or relaxing at home, the MD3 keeps your DAC conveniently attached to your phone while delivering the clarity and dynamics expected from a dedicated headphone amplifier.\u003c\/p\u003e  \u003cp\u003eAt the heart of the MD3 is its fully balanced amplification system, delivering at least 180mW per channel into 32 ohms through the 4.4mm balanced headphone output and at least 80mW per channel through the standard 3.5mm connection. Supporting headphones with impedances ranging from 16 to 300 ohms, the MD3 offers flexible pairing with modern in-ear monitors, audiophile headphones, and other compatible wired listening devices. Its ESS Sabre DAC and ultra-low noise floor help preserve subtle musical details, accurate instrument separation, and dynamic contrast across a wide range of music genres.\u003c\/p\u003e  \u003cp\u003eOne of the MD3's most convenient features is its dual USB-C design, which supports simultaneous music playback and pass-through charging. Connect an external power source to the upper USB-C port while using the lower USB-C connection with your phone, allowing you to keep listening while your device charges. The MD3 also features a customizable rear display that can showcase personal photos, favorite images, emojis, and animations. Built-in mini games, including Rolling Dice, Wine Bottle, and Rock Paper Scissors, add a playful element to this unique portable audio device. Combining premium audio components, magnetic convenience, and personalized visual features, the Fosi Audio MD3 MagDAC is an excellent companion for anyone looking to upgrade their mobile listening experience.\u003c\/p\u003e  \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fosi Audio\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e MD3 MagDAC\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Portable magnetic USB DAC and headphone amplifier\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDAC Chip:\u003c\/strong\u003e ESS Sabre ES9039Q2M\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmplifier Chips:\u003c\/strong\u003e ESS ES9603Q ×4\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmplification Design:\u003c\/strong\u003e Balanced headphone amplification\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Connectivity:\u003c\/strong\u003e Dual USB-C ports\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUpper USB-C Port:\u003c\/strong\u003e Audio decoding, image transfer, and charging input\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLower USB-C Port:\u003c\/strong\u003e Audio decoding, image transfer, and firmware upgrades\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePass-Through Charging:\u003c\/strong\u003e Supports simultaneous listening and charging through the dual USB-C configuration\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Classes:\u003c\/strong\u003e UAC 1.0 and UAC 2.0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUAC 2.0 Maximum PCM Resolution:\u003c\/strong\u003e 32-bit\/384kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUAC 2.0 DSD Support:\u003c\/strong\u003e Native DSD256\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUAC 1.0 Maximum Resolution:\u003c\/strong\u003e 16-bit\/48kHz PCM\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Outputs:\u003c\/strong\u003e 3.5mm single-ended and 4.4mm balanced\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3.5mm Output Power:\u003c\/strong\u003e At least 80mW ×2 at 32 ohms (1kHz, THD+N below 1%)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output Power:\u003c\/strong\u003e At least 180mW ×2 at 32 ohms (1kHz, THD+N below 1%)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupported Headphone Impedance:\u003c\/strong\u003e 16–300 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20Hz–48kHz (±0.2dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3.5mm Signal-to-Noise Ratio:\u003c\/strong\u003e At least 115dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Signal-to-Noise Ratio:\u003c\/strong\u003e At least 116dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3.5mm Dynamic Range:\u003c\/strong\u003e At least 115dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Dynamic Range:\u003c\/strong\u003e At least 116dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3.5mm Total Harmonic Distortion + Noise:\u003c\/strong\u003e 0.00075% or less\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Total Harmonic Distortion + Noise:\u003c\/strong\u003e 0.00084% or less\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3.5mm Noise Floor:\u003c\/strong\u003e Less than 1.7µV\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Noise Floor:\u003c\/strong\u003e Less than 2.7µV\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMagnetic Attachment:\u003c\/strong\u003e MagSafe-style magnetic mounting system\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMagnet Type:\u003c\/strong\u003e Strong N52 magnets\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatible Mounting:\u003c\/strong\u003e MagSafe-compatible smartphones and magnetic cases\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 1.28-inch customizable rear LCD display\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay Customization:\u003c\/strong\u003e Personal images, photos, emojis, and animations\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBuilt-In Display Features:\u003c\/strong\u003e Photo album and interactive mini games\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMini Games:\u003c\/strong\u003e Rolling Dice, Wine Bottle, and Rock Paper Scissors\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Compact portable enclosure with rounded corners\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Premium leather-finished surface\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailable Colors:\u003c\/strong\u003e Galaxy and Obsidian\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 70 × 45 × 12mm (2.76 × 1.77 × 0.47 inches)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 50g ±2g (approximately 0.11 lb), excluding cable\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Source Compatibility:\u003c\/strong\u003e Compatible USB-C smartphones, tablets, and computers supporting USB audio output\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFirmware Updates:\u003c\/strong\u003e Supported through the lower USB-C port\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 24 months\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e Fosi Audio MD3 MagDAC, USB-C to USB-C adapter, user manual, and quick guide\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eWhat It's Great At\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Portable Audio:\u003c\/strong\u003e The ESS Sabre ES9039Q2M DAC supports PCM up to 32-bit\/384kHz and native DSD256, delivering precise digital-to-analog conversion for detailed music playback from compatible USB-C devices.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eConvenient Magnetic Smartphone Attachment:\u003c\/strong\u003e Strong N52 magnets allow the MD3 to attach to MagSafe-compatible phones and cases, creating a compact listening setup without a freely dangling DAC.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eBalanced Headphone Amplification:\u003c\/strong\u003e Four ESS ES9603Q amplifier chips provide at least 180mW per channel at 32 ohms through the 4.4mm balanced output, offering substantial power for compatible IEMs and wired headphones.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eListen While Charging:\u003c\/strong\u003e Dual USB-C connectivity allows compatible smartphones to charge while the MD3 continues processing audio, making it particularly useful during long listening sessions, travel, and everyday use.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eCustomizable Rear Display:\u003c\/strong\u003e The personalized display supports photos, images, emojis, animations, and interactive mini games, adding a unique visual experience to a high-performance portable DAC.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eLightweight Everyday Portability:\u003c\/strong\u003e Weighing approximately 50 grams and measuring just 12mm thick, the MD3 fits easily into pockets and travel bags while providing a refined alternative to conventional USB dongle DACs.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: What is the Fosi Audio MD3 MagDAC?\u003c\/strong\u003e\u003cbr\u003e A: The Fosi Audio MD3 MagDAC is a portable USB-C digital-to-analog converter and headphone amplifier designed to improve wired headphone sound quality when connected to compatible smartphones, tablets, and computers. It combines high-resolution audio processing, magnetic smartphone attachment, balanced headphone amplification, and a customizable rear display.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio MD3 support high-resolution audio?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The MD3 uses an ESS Sabre ES9039Q2M DAC and supports PCM audio up to 32-bit\/384kHz and native DSD256 in USB Audio Class 2.0 mode. It also supports USB Audio Class 1.0 playback up to 16-bit\/48kHz for compatibility with supported devices.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio MD3 work with iPhones and Android smartphones?\u003c\/strong\u003e\u003cbr\u003e A: The MD3 is designed for compatible USB-C smartphones, including supported USB-C iPhones and Android devices. Its magnetic attachment works with MagSafe-compatible phones and magnetic cases, while audio playback requires a compatible USB connection. Magnetic attachment and USB audio compatibility should be verified for individual devices and cases.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I charge my phone while using the Fosi Audio MD3?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The MD3 features dual USB-C connectivity with pass-through charging support. Connecting external power to the upper USB-C port while the lower port is connected to a compatible smartphone allows the phone to charge while music continues playing.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio MD3 have a balanced headphone output?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The MD3 features a 4.4mm balanced headphone output delivering at least 180mW per channel at 32 ohms. It also includes a standard 3.5mm single-ended connection delivering at least 80mW per channel at 32 ohms, making it compatible with a wide selection of wired headphones and in-ear monitors.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I customize the display on the Fosi Audio MD3?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The MD3 features a customizable rear display that supports personal photos, images, emojis, and animations. It also includes a photo album and interactive mini games such as Rolling Dice, Wine Bottle, and Rock Paper Scissors, bringing a personalized element to your portable listening setup.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Is the Fosi Audio MD3 powerful enough for audiophile headphones?\u003c\/strong\u003e\u003cbr\u003e A: The MD3 supports headphones with rated impedances between 16 and 300 ohms and offers both 3.5mm single-ended and 4.4mm balanced amplification. Its balanced output provides at least 180mW per channel at 32 ohms, making it well suited to many modern IEMs and portable headphones, although particularly demanding headphones may benefit from a more powerful dedicated amplifier.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: How portable is the Fosi Audio MD3 MagDAC?\u003c\/strong\u003e\u003cbr\u003e A: The MD3 measures just 70 × 45 × 12mm and weighs approximately 50 grams without its cable. Its slim design, rounded corners, premium exterior finish, and magnetic attachment make it convenient for commuting, traveling, working, and listening to high-resolution music on the go.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Silver","offer_id":62887248461983,"sku":"FOS-MD3-SIL","price":149.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":62887248494751,"sku":"FOS-MD3-BLK","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/067fc934-aa02-4ee7-ad46-42c811a3e7ad.jpg?v=1791559753"},{"product_id":"fosi-audio-merak-cd-player-with-dac-headphone-amplifier","title":"Fosi Audio MERAK CD Player with DAC \u0026 Headphone Amplifier","description":"\u003ch3\u003eFosi Audio MERAK CD Player with DAC \u0026amp; Headphone Amplifier\u003c\/h3\u003e  \u003cp\u003eRediscover your favorite albums with the Fosi Audio MERAK CD Player, a compact, high-fidelity desktop CD player designed to bring exceptional sound quality, modern connectivity, and convenient digital features to your music collection. Combining a precision CD transport, Cirrus Logic CS43131 digital-to-analog converter, and Texas Instruments TPA6120 headphone amplifier, the MERAK delivers detailed, low-distortion sound whether you're listening through headphones, powered speakers, or a dedicated Hi-Fi system. With USB flash drive playback, one-touch CD ripping, optical digital and analog audio outputs, and a 12V trigger output, the MERAK offers a versatile way to enjoy physical media while integrating seamlessly into modern audio systems.\u003c\/p\u003e  \u003cp\u003eEngineered for accurate and reliable CD playback, the MERAK features a dedicated CD mechanism with an optimized servo system that ensures precise disc reading and smooth operation. Its top-loading design provides easy access to your favorite discs, while gapless playback preserves the uninterrupted flow of live albums, classical recordings, and other continuous performances. Built-in Electronic Skip Protection (ESP) provides up to 60 seconds of audio buffering to help prevent playback interruptions caused by vibration or movement. Compatible with standard audio CDs, supported CD-R and CD-RW discs, and the standard CD layer of hybrid SACDs, the MERAK makes it easy to revisit your physical music collection with excellent clarity and consistency.\u003c\/p\u003e  \u003cp\u003eAt the heart of the MERAK is a carefully selected audio chipset consisting of an SC6137D processing chip, Cirrus Logic CS43131 DAC, and Texas Instruments TPA6120 headphone amplifier. The dedicated 3.5mm headphone output delivers at least 210mW per channel into 32 ohms, providing ample power for a wide range of wired headphones with impedances from 16 to 300 ohms. For integration with larger audio systems, the analog line output delivers at least 2Vrms with a signal-to-noise ratio of 124dB and total harmonic distortion plus noise of just 0.0009%. An optical digital output also allows the MERAK to function as a dedicated CD transport, sending a bit-perfect 16-bit\/44.1kHz signal to a compatible external DAC or digital-equipped amplifier.\u003c\/p\u003e  \u003cp\u003eBeyond traditional CD playback, the Fosi Audio MERAK adds convenient ways to enjoy and preserve your music collection. Its USB-A port supports direct playback from compatible flash drives with MP3, WAV, FLAC, AAC, APE, and WMA files. A built-in CD ripping function allows you to convert audio CDs directly into uncompressed 16-bit\/44.1kHz WAV files on a compatible FAT32-formatted USB drive without using a computer. Whether you want to digitize an older collection or listen to music stored on a flash drive, the MERAK combines physical and digital playback in one easy-to-use device.\u003c\/p\u003e  \u003cp\u003eDesigned for everyday convenience, the MERAK features a high-contrast OLED display that shows track information, playback status, and elapsed time, along with intuitive front-panel controls and a distinctive side-mounted volume slider. The included infrared remote offers convenient control over playback, track selection, and listening modes from up to 7 meters away. Its 3.5mm analog line output connects to compatible amplifiers and powered speakers, while the optical output accommodates external DACs. A dedicated 12V trigger output can also synchronize power with compatible components such as the Fosi Audio ZA3 amplifier. With its compact design, flexible connectivity, and impressive audio performance, the Fosi Audio MERAK is an excellent choice for music lovers looking to bring their CD collection back into their everyday listening experience.\u003c\/p\u003e  \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fosi Audio\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e MERAK\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Desktop CD player, CD transport, DAC, and headphone amplifier\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCD Mechanism:\u003c\/strong\u003e Precision top-loading CD transport with optimized servo system\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Processing Chip:\u003c\/strong\u003e SC6137D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDAC Chip:\u003c\/strong\u003e Cirrus Logic CS43131\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Amplifier Chip:\u003c\/strong\u003e Texas Instruments TPA6120\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCD Playback:\u003c\/strong\u003e Standard audio CDs and compatible recordable discs\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupported Disc Formats:\u003c\/strong\u003e CDDA, CD-R, and CD-RW (partial compatibility)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRecommended Disc Type:\u003c\/strong\u003e Original pressed audio CDs\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupported CD-R File Formats:\u003c\/strong\u003e FLAC, WAV, WMA, AAC, and MP3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSACD Compatibility:\u003c\/strong\u003e CD layer of hybrid SACDs only; high-resolution SACD layer is not supported\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum CD Audio Sampling Rate:\u003c\/strong\u003e PCM 16-bit\/96kHz (manufacturer-listed decoding specification)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStandard Audio CD Resolution:\u003c\/strong\u003e PCM 16-bit\/44.1kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum USB Audio Sampling Rate:\u003c\/strong\u003e PCM 16-bit\/96kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Drive Audio Formats:\u003c\/strong\u003e MP3, WAV, FLAC, AAC, APE, and WMA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Playback Capacity:\u003c\/strong\u003e Supports compatible USB flash drives up to 128GB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB File System:\u003c\/strong\u003e FAT32\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCD Ripping:\u003c\/strong\u003e Direct audio CD extraction to USB flash drive\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCD Ripping File Format:\u003c\/strong\u003e Uncompressed WAV\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCD Ripping Resolution:\u003c\/strong\u003e 16-bit\/44.1kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCD Ripping USB Requirements:\u003c\/strong\u003e FAT32-formatted USB flash drive up to 32GB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGapless Playback:\u003c\/strong\u003e Supported\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eElectronic Skip Protection:\u003c\/strong\u003e ESP anti-skip buffering\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eESP Buffer:\u003c\/strong\u003e Up to 60 seconds\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eESP Control:\u003c\/strong\u003e Dedicated rear-panel on\/off switch\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePlayback Modes:\u003c\/strong\u003e Play Once, Repeat One, Repeat All, and Shuffle\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Inputs:\u003c\/strong\u003e CD transport and USB-A flash drive input\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output:\u003c\/strong\u003e 1 × 3.5mm single-ended stereo output\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Line Output:\u003c\/strong\u003e 1 × 3.5mm stereo line-level output\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDigital Audio Output:\u003c\/strong\u003e 1 × optical TOSLINK\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOptical CD Output Resolution:\u003c\/strong\u003e Bit-perfect PCM 16-bit\/44.1kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger:\u003c\/strong\u003e 1 × 12V trigger output\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger Function:\u003c\/strong\u003e Synchronized power control for compatible downstream components\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB-A Port:\u003c\/strong\u003e Flash drive playback, CD ripping, and firmware updates\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB-C Port:\u003c\/strong\u003e DC power input\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Impedance Compatibility:\u003c\/strong\u003e 16–300 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Power:\u003c\/strong\u003e At least 210mW + 210mW into 32 ohms (THD+N below 1%)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Signal-to-Noise Ratio:\u003c\/strong\u003e 121dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output THD+N:\u003c\/strong\u003e 0.002% (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Dynamic Range:\u003c\/strong\u003e 121dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Noise Floor:\u003c\/strong\u003e 3µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Line Output Level:\u003c\/strong\u003e At least 2Vrms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Line Output Signal-to-Noise Ratio:\u003c\/strong\u003e 124dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Line Output THD+N:\u003c\/strong\u003e 0.0009% (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Line Output Dynamic Range:\u003c\/strong\u003e 124dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Line Output Noise Floor:\u003c\/strong\u003e 3µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e High-contrast OLED display\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay Information:\u003c\/strong\u003e Track number, playback status, and elapsed playback time\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisc Loading:\u003c\/strong\u003e Top-loading lid with clip-style disc holder\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisc Safety:\u003c\/strong\u003e Hall sensor automatically stops playback when the lid is opened\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e Side-mounted sliding volume control\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFront-Panel Controls:\u003c\/strong\u003e Power\/input selection, play\/pause, previous track, next track, stop, and CD ripping\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRemote Control:\u003c\/strong\u003e Included infrared remote\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRemote Operating Range:\u003c\/strong\u003e Up to 7 meters (approximately 23 feet)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRemote Functions:\u003c\/strong\u003e Playback, track selection, listening modes, volume, and input\/output control\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFirmware Updates:\u003c\/strong\u003e Supported through USB-A using a USB flash drive\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e DC 5V\/2A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Connection:\u003c\/strong\u003e USB-C\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBuilt-In Battery:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBuilt-In Speakers:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Connectivity:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWi-Fi Connectivity:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB DAC Computer Input:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnvironmental Compliance:\u003c\/strong\u003e RoHS 2.0 and REACH\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 24-month limited warranty\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e Fosi Audio MERAK CD Player, USB-A to USB-C cable, infrared remote control, and user manual\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eWhat It's Great At\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecision CD Playback:\u003c\/strong\u003e A dedicated CD transport with an optimized servo mechanism and gapless playback delivers reliable, uninterrupted listening for standard audio CDs and supported recordable discs.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eHigh-Fidelity DAC and Headphone Amplification:\u003c\/strong\u003e The Cirrus Logic CS43131 DAC and Texas Instruments TPA6120 headphone amplifier provide clean, detailed audio with at least 210mW per channel at 32 ohms for compatible wired headphones.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eConvenient CD Ripping and USB Playback:\u003c\/strong\u003e Convert audio CDs directly into lossless 16-bit\/44.1kHz WAV files on a compatible USB drive, or play MP3, FLAC, WAV, and other supported digital music formats without a computer.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eFlexible Analog and Digital Outputs:\u003c\/strong\u003e A 3.5mm headphone output, analog line output, and optical digital output allow the MERAK to connect directly to headphones, powered speakers, external amplifiers, or a dedicated DAC.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eReliable Playback with Anti-Skip Protection:\u003c\/strong\u003e Built-in ESP technology provides up to 60 seconds of buffering to help minimize playback interruptions caused by vibration, while the top-loading mechanism offers convenient disc access.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eConvenient System Integration and Control:\u003c\/strong\u003e An OLED display, included infrared remote, adjustable volume slider, and 12V trigger output make the MERAK easy to operate and integrate into a compact desktop or full-size Hi-Fi system.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: What is the Fosi Audio MERAK CD Player?\u003c\/strong\u003e\u003cbr\u003e A: The Fosi Audio MERAK is a compact desktop CD player that combines a dedicated CD transport, Cirrus Logic CS43131 DAC, and Texas Instruments TPA6120 headphone amplifier. It supports standard CD playback, USB flash drive audio, CD ripping, and multiple audio outputs for connecting headphones, powered speakers, amplifiers, and external DACs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: What types of CDs can the Fosi Audio MERAK play?\u003c\/strong\u003e\u003cbr\u003e A: The MERAK supports standard audio CDs (CDDA) and offers partial compatibility with CD-R and CD-RW discs. It can also play the standard CD layer of compatible hybrid SACDs, but it does not support the high-resolution SACD layer. Original pressed audio CDs are recommended for the most reliable playback.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can the Fosi Audio MERAK rip CDs to a USB drive?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The MERAK includes a built-in CD ripping function that converts audio CDs into uncompressed 16-bit\/44.1kHz WAV files without requiring a computer. For CD ripping, use a FAT32-formatted USB flash drive with a capacity of 32GB or less.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio MERAK support USB music playback?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The rear USB-A port supports direct music playback from compatible flash drives up to 128GB. Supported audio formats include MP3, WAV, FLAC, AAC, APE, and WMA, with decoding support up to 16-bit\/96kHz. The USB-A port also supports CD ripping and firmware updates.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I connect the Fosi Audio MERAK directly to headphones?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The MERAK includes a dedicated 3.5mm headphone output powered by a Texas Instruments TPA6120 amplifier. It delivers at least 210mW per channel at 32 ohms and supports headphones with impedances ranging from 16 to 300 ohms, making it suitable for many wired headphones and in-ear monitors.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio MERAK have optical and analog audio outputs?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The MERAK features a 3.5mm stereo analog line output for connecting to compatible amplifiers or powered speakers, along with an optical TOSLINK output for connection to an external DAC or digital-equipped amplifier. When used as a CD transport, the optical output delivers a bit-perfect 16-bit\/44.1kHz digital audio signal.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio MERAK have a 12V trigger?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The MERAK includes a 12V trigger output that can automatically synchronize power with compatible downstream audio components. This makes it useful when paired with equipment such as the Fosi Audio ZA3 amplifier that supports a 12V trigger input.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio MERAK have Bluetooth or a built-in battery?\u003c\/strong\u003e\u003cbr\u003e A: No. The MERAK does not include Bluetooth, Wi-Fi, or a built-in rechargeable battery. It is designed for desktop and home audio use and requires a DC 5V\/2A power source through its USB-C power connection. It also does not include built-in speakers, so audio playback requires connected headphones or an external audio system.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":62887253409951,"sku":"FOS-MERAK-SIL","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/5441ae19-b5e6-4f54-a205-0a1b6906071e.jpg?v=1791561962"},{"product_id":"fosi-audio-zh3-desktop-dac-headphone-amplifier-preamplifier","title":"Fosi Audio ZH3 Desktop DAC, Headphone Amplifier \u0026 Preamplifier","description":"\u003ch3\u003eFosi Audio ZH3 Desktop DAC, Headphone Amplifier \u0026amp; Preamplifier\u003c\/h3\u003e  \u003cp\u003eElevate your desktop listening experience with the Fosi Audio ZH3 Desktop DAC, Headphone Amplifier \u0026amp; Preamplifier, a versatile all-in-one Hi-Fi solution designed for audiophiles, music enthusiasts, and gamers who demand exceptional sound quality. Combining an AKM AK4493SEQ DAC, XMOS XU316 USB processor, and four Texas Instruments OPA1612 operational amplifiers, the ZH3 delivers detailed, low-distortion audio with support for high-resolution PCM playback up to 32-bit\/768kHz and native DSD512. Featuring a fully balanced amplification architecture, powerful headphone outputs, and comprehensive digital and analog connectivity, the ZH3 serves as the centerpiece of a premium desktop or home audio system.\u003c\/p\u003e  \u003cp\u003eEngineered to deliver clean, dynamic sound across a wide range of headphones, the ZH3 incorporates a proprietary dual-power balanced amplifier circuit with ultra-low-noise LDO regulators and carefully selected capacitors. Its 4.4mm balanced headphone output delivers up to 2,570mW per channel into 32 ohms, while the 6.35mm single-ended connection provides up to 640mW per channel. Three selectable gain levels accommodate headphones with impedances ranging from 16 to 300 ohms, making the ZH3 equally capable of driving sensitive in-ear monitors and more demanding over-ear headphones. With a signal-to-noise ratio reaching 121dB and an exceptionally low noise floor of just 1.9µV through the single-ended output, the ZH3 preserves subtle musical details while minimizing unwanted background noise.\u003c\/p\u003e  \u003cp\u003eBeyond headphone listening, the Fosi Audio ZH3 functions as a versatile digital-to-analog converter and stereo preamplifier. USB-C, optical, coaxial, and stereo RCA inputs allow you to connect computers, CD players, streamers, gaming consoles, and other compatible audio sources. Balanced XLR and unbalanced RCA outputs provide connections for powered speakers, integrated amplifiers, and dedicated power amplifiers. Select adjustable preamplifier output for convenient volume control or fixed-level line output when connecting to another component with its own volume adjustment. Dedicated 12V trigger input and output connections allow the ZH3 to synchronize power with compatible equipment, making it an excellent companion for components such as the Fosi Audio ZA3 power amplifier and MERAK CD player.\u003c\/p\u003e  \u003cp\u003eFor listeners who enjoy customizing their sound, the ZH3 includes independent bass and treble adjustments, six selectable digital filters, and a Bypass function that removes the tone control circuit from the signal path. Two replaceable DIP8 operational amplifier sockets also provide an opportunity for enthusiasts to experiment with compatible aftermarket op-amps. USB Audio Class 1.0 and 2.0 support ensures flexibility between high-resolution computer playback and compatible gaming consoles such as the PlayStation 5 and Nintendo Switch. An intuitive front-panel display, multifunction volume knob, and included infrared remote make it easy to select inputs, change output modes, adjust volume, and manage settings without complicated software.\u003c\/p\u003e  \u003cp\u003eHoused in a refined desktop enclosure that complements Fosi Audio's Z-Series components, the ZH3 combines modern aesthetics with practical everyday functionality. Its compact footprint makes it ideal for headphone listening stations, desktop audio systems, and dedicated Hi-Fi setups, while its extensive input and output options provide the flexibility to expand your system over time. Whether you're enjoying high-resolution music, powering audiophile headphones, or building a system around balanced power amplification, the Fosi Audio ZH3 delivers exceptional versatility and high-fidelity performance in one convenient component.\u003c\/p\u003e  \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fosi Audio\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e ZH3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Desktop digital-to-analog converter, headphone amplifier, and stereo preamplifier\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Channels:\u003c\/strong\u003e 2-channel stereo\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDAC Chip:\u003c\/strong\u003e AKM AK4493SEQ\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Processor:\u003c\/strong\u003e XMOS XU316\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOperational Amplifiers:\u003c\/strong\u003e Texas Instruments OPA1612 ×4\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmplifier Architecture:\u003c\/strong\u003e Fully balanced, dual-power amplifier circuitry with push-pull differential amplification\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Regulation:\u003c\/strong\u003e Multiple ultra-low-noise LDO regulators and capacitors\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum USB PCM Resolution:\u003c\/strong\u003e 32-bit\/768kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum USB DSD Resolution:\u003c\/strong\u003e DSD512\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOptical Audio Resolution:\u003c\/strong\u003e Up to 24-bit\/192kHz PCM\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCoaxial Audio Resolution:\u003c\/strong\u003e Up to 24-bit\/192kHz PCM\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Inputs:\u003c\/strong\u003e 4 input types: USB-C, optical, coaxial, and stereo RCA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Input:\u003c\/strong\u003e 1 × USB-C\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOptical Digital Input:\u003c\/strong\u003e 1 × TOSLINK\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCoaxial Digital Input:\u003c\/strong\u003e 1 × coaxial S\/PDIF\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Audio Input:\u003c\/strong\u003e 1 × stereo RCA pair\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Outputs:\u003c\/strong\u003e 4 output types: 4.4mm balanced, 6.35mm single-ended, stereo RCA, and balanced XLR\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Headphone Output:\u003c\/strong\u003e 1 × 4.4mm\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-Ended Headphone Output:\u003c\/strong\u003e 1 × 6.35mm (1\/4-inch)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Line Outputs:\u003c\/strong\u003e 1 × stereo RCA pair\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Line Outputs:\u003c\/strong\u003e 1 × stereo XLR pair\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger Input:\u003c\/strong\u003e 1 × 3.5mm\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger Output:\u003c\/strong\u003e 1 × 3.5mm\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupported Headphone Impedance:\u003c\/strong\u003e 16–300 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Gain Settings:\u003c\/strong\u003e Low, Medium, and High\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output Power, Low Gain:\u003c\/strong\u003e 145mW ×2 at 32 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output Power, Medium Gain:\u003c\/strong\u003e 580mW ×2 at 32 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output Power, High Gain:\u003c\/strong\u003e 2,570mW ×2 at 32 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output Signal-to-Noise Ratio:\u003c\/strong\u003e At least 119dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output THD+N:\u003c\/strong\u003e 0.00018% or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output Dynamic Range:\u003c\/strong\u003e At least 119dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output Noise Floor:\u003c\/strong\u003e 4.9µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4.4mm Balanced Output Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.1dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Output Power, Low Gain:\u003c\/strong\u003e 36mW ×2 at 32 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Output Power, Medium Gain:\u003c\/strong\u003e 145mW ×2 at 32 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Output Power, High Gain:\u003c\/strong\u003e 640mW ×2 at 32 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Output Signal-to-Noise Ratio:\u003c\/strong\u003e At least 121dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Output THD+N:\u003c\/strong\u003e 0.00024% or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Output Dynamic Range:\u003c\/strong\u003e At least 121dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Output Noise Floor:\u003c\/strong\u003e 1.9µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Output Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.1dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Line Output Level:\u003c\/strong\u003e 2Vrms in fixed line-output mode\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Output Signal-to-Noise Ratio:\u003c\/strong\u003e At least 122dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Output THD+N:\u003c\/strong\u003e 0.00018% or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Output Dynamic Range:\u003c\/strong\u003e At least 122dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Output Noise Floor:\u003c\/strong\u003e 1.7µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Output Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.1dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eXLR Line Output Level:\u003c\/strong\u003e 4Vrms in fixed line-output mode\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eXLR Output Signal-to-Noise Ratio:\u003c\/strong\u003e At least 119dB (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eXLR Output THD+N:\u003c\/strong\u003e 0.00025% or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eXLR Output Dynamic Range:\u003c\/strong\u003e At least 120dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eXLR Output Noise Floor:\u003c\/strong\u003e 4.6µV or less (A-weighted)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eXLR Output Frequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.1dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog RCA Input Support:\u003c\/strong\u003e Accepts compatible line-level stereo sources\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Input to 4.4mm Output Power:\u003c\/strong\u003e Up to 2,100mW ×2 at 32 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRCA Input to 6.35mm Output Power:\u003c\/strong\u003e Up to 520mW ×2 at 32 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOutput Modes:\u003c\/strong\u003e PO headphone output, AUX adjustable preamplifier output, and LO fixed line-level output\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFixed Line Output Voltage:\u003c\/strong\u003e RCA 2V \/ XLR 4V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVolume Adjustment:\u003c\/strong\u003e Multifunction rotary volume control with on-screen level indication\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVolume Range:\u003c\/strong\u003e 0–99 for digital inputs; 0–32 with RCA input\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTone Controls:\u003c\/strong\u003e Adjustable bass and treble for supported headphone-output modes\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEQ Bypass:\u003c\/strong\u003e Disables bass and treble circuitry for direct audio playback\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDigital Filters:\u003c\/strong\u003e 6 selectable DAC filters\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFilter 1:\u003c\/strong\u003e Sharp Roll-off – Powerful, Dynamic\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFilter 2:\u003c\/strong\u003e Slow Roll-off – Neutral, Balanced\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFilter 3:\u003c\/strong\u003e Short Delay Sharp Roll-off – Detailed, Extended Highs\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFilter 4:\u003c\/strong\u003e Short Delay Slow Roll-off – Clear, Well-Defined\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFilter 5:\u003c\/strong\u003e Super Slow Roll-off – Natural, Smooth\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFilter 6:\u003c\/strong\u003e Low Dispersion – Precise, Analytical\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplaceable Op-Amps:\u003c\/strong\u003e 2 user-replaceable DIP8 dual-channel op-amp positions\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatible Op-Amp Examples:\u003c\/strong\u003e LME49720, NE5532, MUSES02, SS3602, and other electrically compatible dual-channel models\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Audio Modes:\u003c\/strong\u003e USB Audio Class 1.0 and 2.0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGaming Compatibility:\u003c\/strong\u003e PlayStation 5 and other supported gaming consoles using UAC 1.0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eComputer Compatibility:\u003c\/strong\u003e Windows 8, 8.1, 10, 11; macOS X 10.6 or later; Linux\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Driver Requirements:\u003c\/strong\u003e Standard playback is plug-and-play on supported modern systems; additional drivers may be required for certain DSD and 768kHz playback configurations\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFirmware Updates:\u003c\/strong\u003e XMOS firmware updates supported through USB-C\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Integrated front-panel digital display\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay Information:\u003c\/strong\u003e Volume, input source, output mode, sampling rate, EQ status, and system settings\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDisplay Brightness:\u003c\/strong\u003e Four adjustable brightness levels with automatic screen-off mode\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRemote Control:\u003c\/strong\u003e Included infrared remote\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRemote Functions:\u003c\/strong\u003e Power, mute, volume, input selection, output selection, filter selection, display brightness, and menu navigation\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRemote Batteries:\u003c\/strong\u003e 2 AAA batteries required, not included\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAutomatic Standby:\u003c\/strong\u003e Optional automatic power-off after 30 minutes without an audio signal\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger Function:\u003c\/strong\u003e Trigger input and output allow synchronized power operation with compatible upstream and downstream components\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e DC 12V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBuilt-In Speaker Amplification:\u003c\/strong\u003e No; requires external amplification for passive speakers\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Connectivity:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWi-Fi Connectivity:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHDMI Connectivity:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBuilt-In Phono Preamplifier:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 24-month limited warranty\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e Fosi Audio ZH3, 6.35mm headphone adapter, 12V trigger cable, infrared remote, USB-A\/C to USB-C cable, DC 12V power adapter, and user manual\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eWhat It's Great At\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExceptional High-Resolution Audio Playback:\u003c\/strong\u003e The AKM AK4493SEQ DAC and XMOS XU316 processor support PCM up to 32-bit\/768kHz and DSD512 through USB for detailed, high-fidelity music listening.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003ePowerful Balanced Headphone Amplification:\u003c\/strong\u003e Delivering up to 2,570mW per channel at 32 ohms through its 4.4mm balanced output, the ZH3 provides substantial power for a wide range of audiophile headphones.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eFlexible DAC and Preamplifier Integration:\u003c\/strong\u003e USB-C, optical, coaxial, and RCA inputs combine with balanced XLR and RCA outputs to accommodate computers, music sources, powered speakers, and external amplifiers.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eCustomizable Listening Experience:\u003c\/strong\u003e Three headphone gain settings, independent bass and treble adjustment, six digital filters, and EQ Bypass allow you to tailor playback for different headphones, recordings, and listening preferences.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eConvenient Hi-Fi System Control:\u003c\/strong\u003e Dedicated 12V trigger input and output connections, selectable fixed or variable line outputs, and an included infrared remote make the ZH3 easy to integrate with compatible audio components.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eVersatile Desktop and Gaming Compatibility:\u003c\/strong\u003e USB Audio Class 1.0 and 2.0 support allows the ZH3 to serve as both a high-resolution desktop DAC and a compatible gaming-console audio solution.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: What is the Fosi Audio ZH3 used for?\u003c\/strong\u003e\u003cbr\u003e A: The Fosi Audio ZH3 is an all-in-one desktop DAC, headphone amplifier, and stereo preamplifier designed for high-resolution music listening, gaming, and home Hi-Fi systems. It converts digital audio into analog sound, powers compatible wired headphones, and connects to powered speakers or external power amplifiers through RCA and XLR outputs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: How much headphone power does the Fosi Audio ZH3 deliver?\u003c\/strong\u003e\u003cbr\u003e A: The ZH3 delivers up to 2,570mW per channel into 32 ohms through its 4.4mm balanced headphone output and up to 640mW per channel into 32 ohms through its 6.35mm single-ended output when using USB input and high gain. Three selectable gain levels accommodate headphones with different power requirements, including models rated from 16 to 300 ohms.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: What audio inputs and outputs does the Fosi Audio ZH3 have?\u003c\/strong\u003e\u003cbr\u003e A: The ZH3 features four audio input types: USB-C, optical, coaxial, and stereo RCA. It also provides four audio output types: 4.4mm balanced headphones, 6.35mm single-ended headphones, stereo RCA, and balanced stereo XLR. Separate 12V trigger input and output connections support synchronized power control.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio ZH3 have a 12V trigger?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The ZH3 includes both a 12V trigger input and a 12V trigger output. The trigger input allows an upstream component, such as a compatible CD player, to control the ZH3's power, while the trigger output can automatically power compatible downstream equipment such as the Fosi Audio ZA3 amplifier on or off.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I connect the Fosi Audio ZH3 to powered speakers or a power amplifier?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The ZH3 features stereo RCA and balanced XLR outputs that can connect to compatible powered speakers, integrated amplifiers, or dedicated power amplifiers. Its AUX mode provides adjustable preamplifier output, while LO mode supplies fixed-level 2Vrms RCA and 4Vrms XLR signals for components with their own volume controls.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I adjust the bass, treble, and sound signature on the Fosi Audio ZH3?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The ZH3 features adjustable bass and treble, six selectable digital filters, and an EQ Bypass function. These customization features are available in supported headphone playback modes, while some adjustments are disabled when using fixed or variable line-level outputs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio ZH3 work with PlayStation 5 and gaming consoles?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The ZH3 supports USB Audio Class 1.0 for compatibility with gaming systems such as the PlayStation 5 and USB Audio Class 2.0 for high-resolution playback from supported computers and audio devices. Select UAC 1.0 when using a console that requires the older USB audio standard.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I connect a turntable to the Fosi Audio ZH3?\u003c\/strong\u003e\u003cbr\u003e A: Yes, provided the turntable has a built-in phono preamplifier or is connected through a separate external phono preamp. The ZH3 includes a stereo RCA analog input for line-level sources but does not contain a dedicated phono stage. The turntable's signal must therefore be converted to line level before connecting to the ZH3.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":62887254753439,"sku":"FOS-ZH3-BLK","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/491a0a7b-a7b6-408c-9dc7-34d89b97077d.jpg?v=1791563406"},{"product_id":"fosi-audio-gr70-class-a-tube-headphone-amplifier-preamplifier","title":"Fosi Audio GR70 Class-A Tube Headphone Amplifier \u0026 Preamplifier","description":"\u003ch3\u003eFosi Audio GR70 Class-A Tube Headphone Amplifier \u0026amp; Preamplifier – Orange\u003c\/h3\u003e  \u003cp\u003eExperience the warmth and character of traditional tube audio with the Fosi Audio GR70 Class-A Tube Headphone Amplifier \u0026amp; Preamplifier. Designed for music enthusiasts who appreciate detailed sound and vintage-inspired Hi-Fi equipment, the GR70 features a pure vacuum-tube amplification circuit with four replaceable tubes, adjustable headphone impedance modes, and independent bass and treble controls. Delivering up to 300mW of maximum headphone output power into 32 ohms, the GR70 provides a versatile solution for enjoying music through compatible headphones or integrating tube amplification into an existing stereo system. Its premium CNC-machined aluminum enclosure, elegant orange-accented controls, and exposed vacuum tubes create a distinctive desktop listening experience.\u003c\/p\u003e  \u003cp\u003eAt the heart of the GR70 is a dual-stage Class-A vacuum-tube amplification architecture featuring two 5654W tubes for voltage amplification and two 6Ж4\/6Ж8 tubes for power amplification. This four-tube configuration brings the rich harmonic character and smooth musical presentation associated with traditional tube audio to a compact modern component. The replaceable tubes also provide opportunities for personalization, allowing enthusiasts to experiment with electrically compatible replacements to explore different sonic characteristics. With a carefully engineered analog signal path, the GR70 is designed to deliver natural vocals, engaging instrument reproduction, and an immersive listening experience across a wide variety of musical genres.\u003c\/p\u003e  \u003cp\u003eDesigned to accommodate a broad selection of headphones, the Fosi Audio GR70 features both 3.5mm and 6.35mm single-ended headphone outputs, making it easy to connect compatible in-ear monitors and full-size headphones without relying on a separate adapter. A convenient front-panel impedance selector provides two operating modes: Low for headphones rated from 16 to 120 ohms and High for models rated from 120 to 300 ohms. This flexibility allows the GR70 to accommodate headphones with different impedance requirements, while its large top-mounted volume control offers precise, convenient listening adjustments. Independent bass and treble controls provide additional flexibility for tailoring the sound to your headphones, music, and personal listening preferences.\u003c\/p\u003e  \u003cp\u003eIn addition to its headphone amplification capabilities, the GR70 functions as a dedicated stereo tube preamplifier. A rear-panel stereo RCA input allows connection to compatible analog audio sources, including external DACs, CD players, music streamers, and turntables equipped with a built-in or external phono preamplifier. A separate stereo RCA output sends the processed analog signal to compatible powered speakers, integrated amplifiers, or dedicated power amplifiers, bringing the GR70's vacuum-tube character into a larger Hi-Fi system. The preamplifier output delivers up to 1.2V, and the independent bass and treble controls remain active during both headphone and preamplifier operation.\u003c\/p\u003e  \u003cp\u003eThe GR70 combines thoughtful construction with a simple, intuitive interface. Its CNC-machined aluminum alloy chassis features dual-side ventilation openings to help manage heat, while exposed tubes and subtle ambient illumination contribute to its classic aesthetic. The large top-mounted volume knob doubles as the power control, providing a streamlined layout that keeps operation straightforward. With a manufacturer-rated signal-to-noise ratio of at least 97dB and a frequency response of 20Hz to 20kHz, the GR70 delivers capable analog performance in a compact desktop design. The included 12V\/3A power adapter, vacuum tubes, and tube protection covers provide the essential components needed to begin enjoying a dedicated tube listening setup.\u003c\/p\u003e  \u003cp\u003eWhether you're looking to add the distinctive character of vacuum tubes to your headphone listening experience or introduce a tube preamplifier into an existing Hi-Fi system, the Fosi Audio GR70 offers an appealing combination of traditional audio design, versatile connectivity, and convenient everyday control. Its replaceable vacuum tubes, adjustable impedance modes, dual headphone connections, and stereo RCA preamplifier output make it a compelling choice for listeners seeking a more personalized approach to high-fidelity music reproduction.\u003c\/p\u003e  \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e   \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fosi Audio\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e GR70\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eVersion:\u003c\/strong\u003e Orange-accented\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Vacuum tube headphone amplifier and stereo preamplifier\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAmplification Class:\u003c\/strong\u003e Class-A\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAmplifier Architecture:\u003c\/strong\u003e Pure vacuum tube amplification\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAudio Channels:\u003c\/strong\u003e 2-channel stereo\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTotal Vacuum Tubes:\u003c\/strong\u003e 4\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eVoltage Amplification Tubes:\u003c\/strong\u003e 2 × 5654W\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003ePower Amplification Tubes:\u003c\/strong\u003e 2 × 6Ж4\/6Ж8\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTube Configuration:\u003c\/strong\u003e Dual-stage vacuum tube amplification\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTube Replacement:\u003c\/strong\u003e User-replaceable with electrically compatible vacuum tubes\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Power:\u003c\/strong\u003e 90mW rated at 32 ohms\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eMaximum Headphone Output Power:\u003c\/strong\u003e 300mW at 32 ohms\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSupported Headphone Impedance:\u003c\/strong\u003e 16–300 ohms\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eLow-Impedance Mode:\u003c\/strong\u003e 16–120 ohms\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHigh-Impedance Mode:\u003c\/strong\u003e 120–300 ohms\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Impedance Selection:\u003c\/strong\u003e Front-panel High\/Low switch\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTotal Audio Input Types:\u003c\/strong\u003e 1\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAnalog Audio Input:\u003c\/strong\u003e 1 × stereo RCA pair\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eInput Signal Type:\u003c\/strong\u003e Analog line-level audio\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTotal Audio Output Types:\u003c\/strong\u003e 3\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e3.5mm Headphone Output:\u003c\/strong\u003e 1 × single-ended stereo headphone jack\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e6.35mm Headphone Output:\u003c\/strong\u003e 1 × single-ended stereo headphone jack\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAnalog Preamplifier Output:\u003c\/strong\u003e 1 × stereo RCA pair\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRCA Output Level:\u003c\/strong\u003e Up to 1.2V\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRCA Output Function:\u003c\/strong\u003e Stereo analog output for compatible powered speakers or amplifiers\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20Hz–20kHz (±1dB)\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e At least 97dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eDynamic Range:\u003c\/strong\u003e At least 97dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRCA Output THD+N:\u003c\/strong\u003e 0.26% or less\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Output THD+N:\u003c\/strong\u003e 0.5% or less\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRCA Output Noise:\u003c\/strong\u003e 20µV or less\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Noise:\u003c\/strong\u003e 56µV\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRCA Output Crosstalk:\u003c\/strong\u003e -63dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Crosstalk:\u003c\/strong\u003e -65dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBass Control:\u003c\/strong\u003e Independent front-panel rotary adjustment\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTreble Control:\u003c\/strong\u003e Independent front-panel rotary adjustment\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTone Control Compatibility:\u003c\/strong\u003e Applies to both headphone and RCA preamplifier outputs\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e Large top-mounted rotary potentiometer\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003ePower Control:\u003c\/strong\u003e Integrated with volume knob\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eVacuum Tube Warm-Up:\u003c\/strong\u003e Allow at least 20 seconds before playback\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSimultaneous Output Support:\u003c\/strong\u003e Headphone and RCA outputs can operate simultaneously; individual output use is recommended\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eChassis Material:\u003c\/strong\u003e CNC-machined aluminum alloy\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eExterior Styling:\u003c\/strong\u003e Dark metal chassis with orange-accented controls\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e Passive cooling with dual-side ventilation openings\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eVacuum Tube Protection:\u003c\/strong\u003e Includes 2 tube protection covers\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAmbient Illumination:\u003c\/strong\u003e Decorative tube-area lighting\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003ePower Input:\u003c\/strong\u003e DC 12V\/3A\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eIncluded Power Supply:\u003c\/strong\u003e 12V\/3A external adapter\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBuilt-In DAC:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eUSB Audio Input:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eOptical Digital Input:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eCoaxial Digital Input:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHDMI Inputs:\u003c\/strong\u003e 0\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHDMI Outputs:\u003c\/strong\u003e 0\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBluetooth:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eWi-Fi:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eApple AirPlay:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBuilt-In Music Streaming:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eApp Control:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRemote Control:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBuilt-In Phono Preamplifier:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003ePassive Speaker Amplification:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSpeaker Binding Posts:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSpeaker A\/B Selector:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e12V Trigger Input:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e12V Trigger Output:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 6976136960904\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 24-month limited warranty\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e Fosi Audio GR70 headphone amplifier\/preamplifier, 2 × 5654W vacuum tubes, 2 × 6Ж4\/6Ж8 vacuum tubes, 2 tube protection covers, 12V\/3A power adapter, and user manual\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eWhat It's Great At\u003c\/h4\u003e \u003cul\u003e   \u003cli\u003e\n\u003cstrong\u003eAuthentic Class-A Tube Amplification:\u003c\/strong\u003e A dual-stage amplification design featuring four replaceable vacuum tubes delivers the distinctive harmonic character and smooth musical presentation associated with traditional tube audio.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eVersatile Headphone Compatibility:\u003c\/strong\u003e Adjustable Low and High impedance modes accommodate compatible headphones rated from 16 to 300 ohms, with both 3.5mm and 6.35mm headphone outputs for convenient connectivity.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eIntegrated Stereo Tube Preamplifier:\u003c\/strong\u003e A dedicated stereo RCA input and output allow the GR70 to serve as a tube preamplifier for compatible powered speakers, integrated amplifiers, and dedicated power amplifiers.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003ePersonalized Sound Adjustments:\u003c\/strong\u003e Independent bass and treble controls make it easy to fine-tune music playback, with adjustments available for both headphone and preamplifier operation.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eCustomizable Vacuum Tube Design:\u003c\/strong\u003e Two 5654W voltage amplification tubes and two 6Ж4\/6Ж8 power amplification tubes can be replaced with electrically compatible alternatives for additional personalization.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003ePremium Desktop Construction:\u003c\/strong\u003e A CNC-machined aluminum alloy enclosure, orange-accented controls, exposed vacuum tubes, and dual-side ventilation combine classic Hi-Fi styling with practical heat management.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: What is the Fosi Audio GR70 used for?\u003c\/strong\u003e\u003cbr\u003e A: The Fosi Audio GR70 is a Class-A vacuum tube headphone amplifier and stereo preamplifier. It amplifies analog audio for compatible wired headphones and can also send a tube-processed audio signal through its RCA outputs to powered speakers or an external amplifier. It does not contain a built-in DAC or speaker power amplifier.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: How much headphone power does the Fosi Audio GR70 deliver?\u003c\/strong\u003e\u003cbr\u003e A: Fosi Audio specifies 90mW of rated headphone output power into 32 ohms, with a maximum output of 300mW into 32 ohms. Actual output varies with the headphones being used and the selected impedance mode.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: What headphones are compatible with the Fosi Audio GR70?\u003c\/strong\u003e\u003cbr\u003e A: The GR70 supports compatible headphones with impedances ranging from 16 to 300 ohms. Its Low mode is designed for 16–120-ohm headphones, while High mode accommodates models rated from 120 to 300 ohms. Both 3.5mm and 6.35mm single-ended headphone connections are available.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I use the Fosi Audio GR70 as a stereo preamplifier?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The GR70 features a stereo RCA input and stereo RCA output, allowing you to connect an analog audio source and send the processed signal to compatible powered speakers or a separate amplifier. Its tone controls also operate when using the RCA preamplifier output.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio GR70 support Bluetooth, Wi-Fi, or music streaming?\u003c\/strong\u003e\u003cbr\u003e A: No. The GR70 is a dedicated analog headphone amplifier and preamplifier without built-in Bluetooth, Wi-Fi, Apple AirPlay, or network streaming services. To enjoy wireless or digital music, connect a compatible external DAC, Bluetooth receiver, or music streamer with analog RCA outputs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I adjust the bass and treble on the Fosi Audio GR70?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The GR70 includes independent bass and treble controls on its front panel, allowing you to customize the tonal balance of your music. These adjustments operate during both headphone listening and RCA preamplifier playback.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I replace the vacuum tubes in the Fosi Audio GR70?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The GR70 includes four replaceable vacuum tubes: two 5654W tubes for voltage amplification and two 6Ж4\/6Ж8 tubes for power amplification. Replacements must be electrically compatible with the specific tube positions. Always disconnect power and allow the tubes to cool completely before removing or installing them.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can the Fosi Audio GR70 play through headphones and powered speakers simultaneously?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The GR70 supports simultaneous audio output through its headphone connections and stereo RCA preamplifier output. However, Fosi Audio recommends using one output at a time for the best listening experience. The unit requires approximately 20 seconds of tube warm-up after powering on before playback begins.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":62887306199199,"sku":"FOS-GR70-BLK","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/7f58d307-b6b5-4cba-8a5b-cda4ee020096.jpg?v=1791573892"},{"product_id":"fosi-audio-gr40-tube-dac-headphone-amplifier-preamplifier","title":"Fosi Audio GR40 Tube DAC, Headphone Amplifier \u0026 Preamplifier","description":"\u003ch3\u003eFosi Audio GR40 Tube DAC, Headphone Amplifier \u0026amp; Preamplifier\u003c\/h3\u003e  \u003cp\u003eBring the character of vacuum tube audio and modern digital connectivity to your listening space with the Fosi Audio GR40 Tube DAC, Headphone Amplifier \u0026amp; Preamplifier. Combining an ESS ES9028Q2M digital-to-analog converter, two replaceable 5654W vacuum tubes, and a dedicated headphone amplifier, the GR40 offers a versatile solution for high-resolution music playback and personal listening. With Bluetooth 5.1, USB-C, optical, and coaxial digital inputs, along with stereo RCA and 3.5mm headphone outputs, the GR40 brings modern convenience and classic Hi-Fi styling together in one compact desktop component.\u003c\/p\u003e  \u003cp\u003eAt the heart of the Fosi Audio GR40 is the ESS ES9028Q2M DAC, designed to deliver detailed and accurate digital-to-analog conversion for your favorite music. Through its USB connection, the GR40 supports PCM audio up to 32-bit\/384kHz and DSD256, providing compatibility with high-resolution music files and playback software. Optical and coaxial digital inputs offer additional connectivity for compatible CD transports, televisions, and other digital audio sources. The GR40's tube preamplifier stage uses two 5654W vacuum tubes to introduce the rich harmonic character associated with traditional tube audio, creating an engaging listening experience that combines modern digital precision with vintage-inspired sound.\u003c\/p\u003e  \u003cp\u003eWireless music playback is equally convenient with Bluetooth 5.1 connectivity, powered by a Qualcomm QCC3031 Bluetooth chip. Supporting SBC, AAC, aptX, aptX HD, and aptX Low Latency codecs, the GR40 allows you to stream music wirelessly from compatible smartphones, tablets, and computers. aptX HD provides enhanced Bluetooth audio quality when paired with compatible devices, while aptX Low Latency helps reduce audio delay when watching movies or videos. An included external Bluetooth antenna supports a reliable wireless connection, while front-panel input indicators make it easy to identify and switch between Bluetooth, USB, optical, and coaxial sources.\u003c\/p\u003e  \u003cp\u003eFor dedicated headphone listening, the Fosi Audio GR40 includes a 3.5mm stereo headphone output designed for compatible headphones with impedances ranging from 32 to 300 ohms. The integrated headphone amplifier delivers up to 250mW into 32 ohms and 40mW into 300 ohms, offering flexible performance for a range of wired headphones. A headphone-priority system automatically mutes the rear RCA output whenever headphones are connected, making it easy to transition between private listening and speaker playback without manually switching outputs.\u003c\/p\u003e  \u003cp\u003eBeyond its headphone capabilities, the GR40 functions as a stereo tube preamplifier with a dedicated pair of RCA analog outputs. Connect the GR40 to compatible powered speakers, an integrated amplifier, or a dedicated power amplifier to bring its DAC and vacuum tube preamplification into a larger stereo system. Independent bass and treble controls provide additional sound customization, allowing you to adjust tonal balance to suit different recordings, connected equipment, and personal preferences. A multifunction volume knob also serves as the power and input-selection control, providing convenient operation without a complicated interface.\u003c\/p\u003e  \u003cp\u003eDesigned for both performance and visual appeal, the GR40 features a compact metal enclosure, two exposed vacuum tubes, and decorative tube rings that bring classic Hi-Fi character to modern desktop audio systems. The tubes can be replaced with compatible alternatives, giving enthusiasts the opportunity to experiment with different tube characteristics. An external 12V power adapter supplies the GR40, while its USB-C connection is dedicated to digital audio data rather than power delivery. Whether you're exploring high-resolution music files, streaming wirelessly from your phone, or building a dedicated headphone listening setup, the Fosi Audio GR40 delivers an appealing combination of digital audio performance, tube preamplification, and everyday versatility.\u003c\/p\u003e  \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fosi Audio\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e GR40\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Tube DAC, stereo preamplifier, and headphone amplifier\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAudio Channels:\u003c\/strong\u003e 2-channel stereo\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmplifier Design:\u003c\/strong\u003e Hybrid digital audio conversion and vacuum tube preamplification\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDAC Chip:\u003c\/strong\u003e ESS 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USB-C\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOptical Digital Input:\u003c\/strong\u003e 1 × TOSLINK\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCoaxial Digital Input:\u003c\/strong\u003e 1 × coaxial S\/PDIF\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWireless Audio Input:\u003c\/strong\u003e Bluetooth 5.1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSelectable Input Modes:\u003c\/strong\u003e Bluetooth, USB, optical, and coaxial\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum USB PCM Resolution:\u003c\/strong\u003e 32-bit\/384kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum USB DSD Resolution:\u003c\/strong\u003e DSD256\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUSB Function:\u003c\/strong\u003e Digital audio data connection only; does not power the GR40\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Version:\u003c\/strong\u003e 5.1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Audio Codecs:\u003c\/strong\u003e SBC, AAC, aptX, aptX HD, and aptX Low Latency\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Wireless Range:\u003c\/strong\u003e At least 10 meters under suitable conditions\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Antenna:\u003c\/strong\u003e External antenna, included\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Pairing Reset:\u003c\/strong\u003e Dedicated rear-panel reset button\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTotal Audio Output Types:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output:\u003c\/strong\u003e 1 × 3.5mm stereo headphone jack\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Preamplifier Output:\u003c\/strong\u003e 1 × stereo RCA pair\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Impedance Compatibility:\u003c\/strong\u003e 32–300 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Power at 16 Ohms:\u003c\/strong\u003e 300mW\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Power at 32 Ohms:\u003c\/strong\u003e 250mW\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Power at 250 Ohms:\u003c\/strong\u003e 50mW\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Output Power at 300 Ohms:\u003c\/strong\u003e 40mW\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeadphone Priority:\u003c\/strong\u003e Yes; RCA output is muted when headphones are connected\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e At least 103dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDynamic Range:\u003c\/strong\u003e 104dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20Hz–20kHz (±1dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBass Control:\u003c\/strong\u003e Independent front-panel rotary control\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTreble Control:\u003c\/strong\u003e Independent front-panel rotary control\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e Multifunction front-panel rotary knob\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Control:\u003c\/strong\u003e Press-and-hold multifunction knob\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInput Selection:\u003c\/strong\u003e Front-panel multifunction knob\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInput Indicators:\u003c\/strong\u003e Front-panel LED indicators\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDSD Indicator:\u003c\/strong\u003e Dedicated front-panel indicator\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTube Warm-Up:\u003c\/strong\u003e Approximately 15 seconds recommended before playback\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e DC 12V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Power Adapter:\u003c\/strong\u003e 12V DC power supply\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e Compact metal chassis with exposed vacuum tubes\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTube Accessories:\u003c\/strong\u003e Decorative rings for both vacuum tubes\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatible Speaker Systems:\u003c\/strong\u003e Powered speakers or passive speakers driven by an external amplifier\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBuilt-In Speaker Amplification:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpeaker-Level Outputs:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStereo Speaker Pairs Powered Directly:\u003c\/strong\u003e 0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog RCA Inputs:\u003c\/strong\u003e 0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePhono Input:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced XLR Input:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Headphone Output:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e6.35mm Headphone Output:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWi-Fi Connectivity:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApple AirPlay:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBuilt-In Network Music Streaming:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHDMI Inputs:\u003c\/strong\u003e 0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHDMI Outputs:\u003c\/strong\u003e 0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger Input:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger Output:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRemote Control:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApp Control:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 24-month limited warranty\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e Fosi Audio GR40, 2 × 5654W vacuum tubes, 2 × decorative tube rings, 12V power adapter, Bluetooth antenna, and user manual\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eWhat It's Great At\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Digital Audio Conversion:\u003c\/strong\u003e The ESS ES9028Q2M DAC supports PCM up to 32-bit\/384kHz and DSD256 through USB, making it an excellent foundation for enjoying high-resolution music files.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eClassic Vacuum Tube Sound:\u003c\/strong\u003e Two replaceable 5654W tubes bring the distinctive harmonic character of tube preamplification to headphone listening and compatible stereo audio systems.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eVersatile Digital and Wireless Connectivity:\u003c\/strong\u003e Bluetooth 5.1, USB-C, optical, and coaxial inputs accommodate computers, smartphones, CD transports, televisions, and other compatible digital music sources.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eDedicated Headphone Amplification:\u003c\/strong\u003e A 3.5mm headphone output delivers up to 250mW into 32 ohms and supports compatible headphones from 32 to 300 ohms, with headphone-priority switching for convenient private listening.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eStereo Tube Preamplifier Functionality:\u003c\/strong\u003e A dedicated stereo RCA output allows the GR40 to connect to powered speakers or external amplifiers, bringing its DAC and vacuum tube sound character into a larger Hi-Fi system.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eCustomizable Sound and Tube Design:\u003c\/strong\u003e Independent bass and treble controls, user-replaceable vacuum tubes, and convenient front-panel operation make it easy to personalize your listening experience.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: What is the Fosi Audio GR40 used for?\u003c\/strong\u003e\u003cbr\u003e A: The Fosi Audio GR40 is a combined digital-to-analog converter, vacuum tube stereo preamplifier, and headphone amplifier. It converts digital audio from Bluetooth, USB, optical, and coaxial sources into analog sound for compatible wired headphones or a stereo system connected through its RCA outputs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: What audio inputs and outputs does the Fosi Audio GR40 have?\u003c\/strong\u003e\u003cbr\u003e A: The GR40 features four selectable audio input types: Bluetooth 5.1, USB-C, optical digital, and coaxial digital. It offers two analog output types: one 3.5mm stereo headphone output and one stereo RCA preamplifier output. It does not include analog RCA inputs, balanced XLR connections, or speaker-level outputs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio GR40 support Bluetooth music streaming?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The GR40 features Bluetooth 5.1 with SBC, AAC, aptX, aptX HD, and aptX Low Latency codec support. This allows wireless music playback from compatible smartphones, tablets, and computers, while aptX Low Latency can help reduce audio delay when used with a compatible transmitting device. The GR40 does not include Wi-Fi or independent network streaming services.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can the Fosi Audio GR40 play high-resolution audio?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The GR40 includes an ESS ES9028Q2M DAC supporting PCM audio up to 32-bit\/384kHz and DSD256 through its USB input. Actual playback resolution depends on the connected source, connection type, software, and audio format.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: How much headphone power does the Fosi Audio GR40 deliver?\u003c\/strong\u003e\u003cbr\u003e A: The GR40 delivers 250mW into 32 ohms, 50mW into 250 ohms, and 40mW into 300 ohms, with a published measurement of 300mW at 16 ohms. Fosi Audio specifies a recommended headphone impedance range of 32 to 300 ohms, making it suitable for a variety of compatible headphones.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I use the Fosi Audio GR40 as a tube preamplifier?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The GR40 features stereo RCA preamplifier outputs for connection to compatible powered speakers, integrated amplifiers, or dedicated power amplifiers. This allows you to use its DAC and vacuum tube preamplifier stage as part of a larger Hi-Fi system. It cannot directly power passive speakers.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can headphones and RCA outputs play simultaneously?\u003c\/strong\u003e\u003cbr\u003e A: No. The GR40 uses headphone-priority output switching, meaning the rear stereo RCA outputs are automatically muted when headphones are connected. To resume playback through connected speakers or an external amplifier, disconnect the headphones from the front-panel jack.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I replace the vacuum tubes in the Fosi Audio GR40?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The GR40 includes two replaceable 5654W vacuum tubes. Electrically compatible replacement models include EF95, 6AK5, 6AK5W, 403A\/403B, and selected 6J-series tubes. 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Featuring a premium ESS ES9039Q2M DAC, XMOS XU316 USB processor, and dual Texas Instruments TPA6120 amplifier chips, the ZH1 combines high-resolution digital-to-analog conversion with fully balanced Class-AB headphone amplification. Delivering up to 2,300mW per channel into 32 ohms through its balanced headphone output, the ZH1 provides ample power for compatible in-ear monitors and over-ear headphones. With AI-assisted parametric EQ, versatile digital connections, and customizable RGB lighting, the ZH1 brings modern performance and flexibility to your desktop listening setup.\u003c\/p\u003e  \u003cp\u003eAt the heart of the ZH1 is the ESS Sabre ES9039Q2M digital-to-analog converter, paired with an XMOS XU316 USB processor capable of decoding PCM audio up to 32-bit\/768kHz and DSD512. The fully balanced Class-AB amplification circuit uses two Texas Instruments TPA6120 amplifier chips to deliver detailed sound with low distortion and excellent dynamic range. Fosi Audio's carefully optimized circuitry provides a manufacturer-rated signal-to-noise ratio of at least 124dB, total harmonic distortion plus noise of 0.0002% or less, and a noise floor of 1.7µV or less. This combination helps preserve subtle musical details while providing the dynamic performance needed for demanding recordings, games, and movies.\u003c\/p\u003e  \u003cp\u003eOne of the ZH1's standout features is its Smart Acoustic Assistant, an AI-assisted parametric equalization system designed to simplify personalized sound tuning. Instead of manually adjusting complex EQ settings, users can describe their preferred sound characteristics or select listening presets optimized for gaming, movies, and music. The system can generate personalized parametric EQ profiles and reference an open-source headphone database to help align supported headphone frequency responses with the Harman Target. A dedicated web-based control panel provides visual EQ adjustment, profile management, and EQ file sharing, allowing listeners to fine-tune their sound without requiring extensive audio engineering knowledge.\u003c\/p\u003e  \u003cp\u003eDesigned to accommodate a wide variety of headphones, the Fosi Audio ZH1 features three headphone connections: a 3.5mm single-ended output, a 6.35mm single-ended output, and a 4.4mm balanced output. The 4.4mm balanced connection delivers up to 2,300mW per channel into 32 ohms, while the 6.35mm single-ended output provides up to 589mW per channel into 32 ohms. Three selectable gain levels allow the ZH1 to accommodate compatible headphones with impedances from 8 to 300 ohms, making it suitable for sensitive in-ear monitors as well as many full-size audiophile headphones. A convenient output-switching function lets users move between headphone playback and the rear stereo RCA output, with independent volume memory for each listening mode.\u003c\/p\u003e  \u003cp\u003eConnectivity is another strength of the ZH1. USB-C, optical, and coaxial digital inputs make it easy to connect compatible computers, CD transports, game consoles, and other digital audio sources. Support for USB Audio Class 1.0 expands compatibility with gaming systems such as the PlayStation 5 and Nintendo Switch, allowing the ZH1 to function as a dedicated gaming DAC and headphone amplifier. The rear stereo RCA output also allows the ZH1 to connect to compatible powered speakers or external amplifiers, making it a versatile centerpiece for desktop Hi-Fi systems that alternate between headphones and speakers.\u003c\/p\u003e  \u003cp\u003eThe ZH1 combines advanced audio functionality with a distinctive modern design. A 1.2-inch HD LCD displays essential playback information, while an aluminum rotary knob and touch-sensitive controls provide convenient access to volume, settings, and listening modes. A customizable RGB light ring offers nine dynamic lighting modes, including effects that respond to volume changes. Color, sensitivity, and lighting behavior can be adjusted through the web control panel, allowing the ZH1 to complement gaming stations, desktop audio systems, and minimalist listening spaces. With its combination of powerful balanced amplification, high-resolution audio conversion, intelligent sound tuning, and flexible connectivity, the Fosi Audio ZH1 offers a compelling all-in-one solution for personalized headphone listening and desktop Hi-Fi.\u003c\/p\u003e  \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e   \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fosi Audio\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e ZH1\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fully balanced desktop DAC, headphone amplifier, and stereo preamplifier\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAudio Channels:\u003c\/strong\u003e 2-channel stereo\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAmplifier Class:\u003c\/strong\u003e Class-AB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAmplifier Architecture:\u003c\/strong\u003e Fully balanced headphone amplification\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eDAC Chip:\u003c\/strong\u003e ESS Sabre ES9039Q2M\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eUSB Audio Processor:\u003c\/strong\u003e XMOS XU316\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Amplifier Chips:\u003c\/strong\u003e 2 × Texas Instruments TPA6120\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eMaximum PCM Resolution:\u003c\/strong\u003e 32-bit\/768kHz\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eMaximum DSD Resolution:\u003c\/strong\u003e DSD512\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eMaximum Balanced Headphone Output Power:\u003c\/strong\u003e 2,300mW × 2 at 32 ohms, THD+N below 1%\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eMaximum Single-Ended Headphone Output Power:\u003c\/strong\u003e 589mW × 2 at 32 ohms, THD+N below 1%\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSupported Headphone Impedance:\u003c\/strong\u003e 8–300 ohms\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eGain Settings:\u003c\/strong\u003e 3 selectable levels\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e At least 124dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eDynamic Range:\u003c\/strong\u003e At least 124dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion + Noise:\u003c\/strong\u003e 0.0002% or less\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eNoise Floor:\u003c\/strong\u003e 1.7µV or less\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTotal Audio Input Types:\u003c\/strong\u003e 3\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eUSB Audio Input:\u003c\/strong\u003e 1 × USB-C\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eOptical Digital Input:\u003c\/strong\u003e 1 × TOSLINK\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eCoaxial Digital Input:\u003c\/strong\u003e 1 × coaxial S\/PDIF\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eUSB Audio Class Compatibility:\u003c\/strong\u003e UAC 1.0 support for compatible gaming consoles\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eGaming Compatibility:\u003c\/strong\u003e Compatible PCs, PlayStation 5, and Nintendo Switch\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTotal Audio Output Types:\u003c\/strong\u003e 4\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e3.5mm Headphone Output:\u003c\/strong\u003e 1 × single-ended stereo\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e6.35mm Headphone Output:\u003c\/strong\u003e 1 × single-ended stereo\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e4.4mm Headphone Output:\u003c\/strong\u003e 1 × balanced stereo\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAnalog RCA Output:\u003c\/strong\u003e 1 × stereo RCA pair\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRCA Output Function:\u003c\/strong\u003e Analog output for compatible powered speakers and external amplifiers\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eOutput Switching:\u003c\/strong\u003e Quick double-tap switching between headphone and RCA output modes\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eVolume Memory:\u003c\/strong\u003e Independent volume memory for headphone and RCA output modes\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSound Customization:\u003c\/strong\u003e AI-assisted parametric equalization\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eEQ System:\u003c\/strong\u003e Smart Acoustic Assistant\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eEQ Presets:\u003c\/strong\u003e Optimized listening profiles for gaming, movies, and music\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003ePersonalized EQ Generation:\u003c\/strong\u003e Natural-language sound preference input\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone EQ Database:\u003c\/strong\u003e Integration with an open-source headphone measurement database\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Target Matching:\u003c\/strong\u003e Harman Target frequency response alignment for supported headphones\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eEQ Customization:\u003c\/strong\u003e Web-based visual parametric EQ adjustment\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eEQ Sharing:\u003c\/strong\u003e Supports EQ file sharing through the web control interface\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eControl Interface:\u003c\/strong\u003e Web-based settings and EQ customization panel\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 1.2-inch HD LCD\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eFront-Panel Controls:\u003c\/strong\u003e Aluminum rotary knob and touch-sensitive controls\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRGB Lighting:\u003c\/strong\u003e Integrated customizable RGB light ring\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eLighting Modes:\u003c\/strong\u003e 9 dynamic RGB effects\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eVolume-Synchronized Lighting:\u003c\/strong\u003e Supported\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eLighting Customization:\u003c\/strong\u003e Adjustable color, sensitivity, and lighting effects through the web control panel\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003ePower Input:\u003c\/strong\u003e DC 12–15V\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eIncluded Power Supply:\u003c\/strong\u003e External power adapter\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBuilt-In DAC:\u003c\/strong\u003e Yes\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBuilt-In Headphone Amplifier:\u003c\/strong\u003e Yes\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eAnalog RCA Audio Inputs:\u003c\/strong\u003e 0\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBalanced XLR Audio Outputs:\u003c\/strong\u003e 0\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Microphone Input:\u003c\/strong\u003e No dedicated microphone input listed\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003ePassive Speaker Amplification:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSpeaker Binding Posts:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eStereo Speaker Pairs Powered Directly:\u003c\/strong\u003e 0\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBluetooth Connectivity:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eWi-Fi Connectivity:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eApple AirPlay:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBuilt-In Music Streaming Services:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHDMI Inputs:\u003c\/strong\u003e 0\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHDMI Outputs:\u003c\/strong\u003e 0\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eRemote Control:\u003c\/strong\u003e No\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eWeb-Based EQ Control:\u003c\/strong\u003e Yes\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e12V Trigger Input:\u003c\/strong\u003e No dedicated connection listed\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003e12V Trigger Output:\u003c\/strong\u003e No dedicated connection listed\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 24-month limited warranty\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e Fosi Audio ZH1 DAC\/headphone amplifier, USB-A\/USB-C to USB-C cable, power adapter, and quick guide\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eWhat It's Great At\u003c\/h4\u003e \u003cul\u003e   \u003cli\u003e\n\u003cstrong\u003eAI-Assisted Personalized Sound:\u003c\/strong\u003e Smart Acoustic Assistant generates customized parametric EQ settings based on listening preferences, supported headphone measurements, and presets for gaming, movies, and music.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003ePowerful Fully Balanced Headphone Amplification:\u003c\/strong\u003e Dual Texas Instruments TPA6120 amplifiers deliver up to 2,300mW per channel into 32 ohms through the 4.4mm balanced output for compatible audiophile headphones.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution ESS Sabre DAC:\u003c\/strong\u003e The ES9039Q2M DAC and XMOS XU316 processor support PCM up to 32-bit\/768kHz and DSD512 for detailed digital audio reproduction.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eVersatile Headphone and Speaker Connectivity:\u003c\/strong\u003e Three headphone connections and stereo RCA outputs provide flexibility for switching between personal listening and compatible desktop speaker systems.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eHi-Fi and Gaming Compatibility:\u003c\/strong\u003e USB-C, optical, and coaxial inputs with UAC 1.0 support accommodate compatible computers, digital audio sources, and gaming consoles, including PlayStation 5 and Nintendo Switch.\u003c\/li\u003e    \u003cli\u003e\n\u003cstrong\u003eCustomizable Display and RGB Lighting:\u003c\/strong\u003e A 1.2-inch LCD, responsive controls, and nine adjustable RGB lighting effects provide clear playback information and a personalized desktop appearance.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: What is the Fosi Audio ZH1?\u003c\/strong\u003e A: The Fosi Audio ZH1 is a fully balanced desktop DAC, headphone amplifier, and stereo preamplifier designed for high-resolution music, gaming, and personal audio. It combines an ESS ES9039Q2M DAC, XMOS XU316 USB processor, and dual TPA6120 headphone amplifier chips with AI-assisted parametric equalization and versatile digital connectivity.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: How much headphone power does the Fosi Audio ZH1 deliver?\u003c\/strong\u003e A: The ZH1 delivers a maximum of 2,300mW per channel into 32 ohms through its balanced 4.4mm headphone output and 589mW per channel into 32 ohms through its single-ended output, measured with THD+N below 1%. It supports compatible headphones with impedances ranging from 8 to 300 ohms and includes three selectable gain levels.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: What headphone connections does the Fosi Audio ZH1 have?\u003c\/strong\u003e A: The ZH1 provides three wired headphone connections: 3.5mm single-ended, 6.35mm single-ended, and 4.4mm balanced. This allows users to connect compatible in-ear monitors and over-ear headphones without requiring a separate headphone amplifier.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: How does the Fosi Audio ZH1 AI Smart PEQ feature work?\u003c\/strong\u003e A: The Smart Acoustic Assistant allows users to describe their preferred sound characteristics or select presets for gaming, movies, and music. It can generate personalized parametric EQ settings and reference a headphone measurement database to help align supported headphones with the Harman Target. A web-based control panel provides additional visual tuning and EQ management.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio ZH1 support high-resolution audio?\u003c\/strong\u003e A: Yes. Its ESS ES9039Q2M DAC and XMOS XU316 USB processor support PCM playback up to 32-bit\/768kHz and DSD512 through compatible USB connections. Actual playback capability depends on the connected source, playback software, and selected audio format.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can the Fosi Audio ZH1 connect to powered speakers?\u003c\/strong\u003e A: Yes. The ZH1 includes a stereo RCA output for connection to compatible powered speakers or external amplifiers. A convenient double-tap control switches between headphone and RCA output modes, and independent volume memory helps preserve preferred listening levels when changing outputs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I use the Fosi Audio ZH1 with a PlayStation 5 or Nintendo Switch?\u003c\/strong\u003e A: Yes. The ZH1 supports USB Audio Class 1.0, providing compatibility with supported gaming consoles such as PlayStation 5 and Nintendo Switch. Its Smart Acoustic Assistant also includes gaming-focused EQ presets that can be customized to suit individual preferences.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio ZH1 support Bluetooth, Apple AirPlay, or Wi-Fi streaming?\u003c\/strong\u003e A: No. The ZH1 is a wired digital audio component with USB-C, optical, and coaxial inputs. It does not include Bluetooth, Wi-Fi, Apple AirPlay, or independent network streaming services. The web-based control panel is designed for EQ and device customization rather than built-in wireless music playback.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":62887316455583,"sku":"FOS-ZH1-BLK","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/f9af7f92-8345-4c6c-9d1a-6047c4d23c2e.jpg?v=1791578528"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/collections\/c1f40199-7fb6-41fd-bedf-f6ec5e4cb3a8.jpg?v=1791900095","url":"https:\/\/listenup.com\/collections\/fosi-audio-headphone-amplifiers.oembed","provider":"ListenUp","version":"1.0","type":"link"}