{"product_id":"fosi-audio-bt20a-max-bluetooth-2-1-channel-stereo-amplifier","title":"Fosi Audio BT20A MAX Bluetooth 2.1-Channel Stereo Amplifier","description":"\u003ch3\u003eFosi Audio BT20A MAX Bluetooth 2.1-Channel Stereo Amplifier\u003c\/h3\u003e  \u003cp\u003eBring powerful, high-fidelity sound to your home audio system with the Fosi Audio BT20A MAX Bluetooth 2.1-Channel Stereo Amplifier, a compact yet versatile Class-D amplifier designed for music enthusiasts who want exceptional sound quality, modern wireless connectivity, and flexible system integration. Powered by the Texas Instruments TPA3255 amplifier chip with advanced Post-Filter Feedback (PFFB) technology, the BT20A MAX delivers 180 watts RMS per channel into 4 ohms, with a maximum rated output of 300 watts per channel. Featuring Bluetooth 6.0 with LDAC and aptX Lossless support, dual RCA inputs, a dedicated subwoofer output, and an included remote control, the BT20A MAX combines powerful amplification with convenient everyday operation.\u003c\/p\u003e  \u003cp\u003eEngineered for clean, detailed sound reproduction, the BT20A MAX incorporates PFFB technology to minimize distortion and maintain consistent performance across a wide range of speaker loads. Its optimized circuitry features independent digital and analog power supply sections, helping reduce electrical interference and preserve musical detail. With a signal-to-noise ratio of at least 112dB, total harmonic distortion plus noise of 0.003% or less, and a SINAD rating of at least 96dB, the amplifier delivers excellent clarity, dynamic range, and precise stereo imaging. An enhanced cooling system with a built-in quiet fan improves cooling efficiency by approximately 30% compared with the BT20A Pro, supporting stable operation during extended listening sessions.\u003c\/p\u003e  \u003cp\u003eWireless streaming is equally impressive thanks to the integrated Qualcomm QCC3095 Bluetooth processor. Supporting Bluetooth 6.0 and premium audio codecs including LDAC, aptX Lossless, aptX HD, aptX Adaptive, aptX, AAC, and SBC, the BT20A MAX offers high-quality wireless playback from compatible smartphones, tablets, computers, and other Bluetooth devices. With support for audio resolutions up to 24-bit\/96kHz through compatible Bluetooth connections, listeners can enjoy detailed wireless music playback without the complexity of additional streaming components. Two stereo RCA inputs also provide convenient connections for external DACs, CD players, streamers, and turntables equipped with an appropriate phono preamplifier.\u003c\/p\u003e  \u003cp\u003eDesigned to serve as the centerpiece of a compact stereo or 2.1-channel system, the BT20A MAX includes a dedicated RCA subwoofer output for connecting a powered subwoofer. A switchable 80Hz high-pass filter lets your main speakers focus on frequencies above 80Hz while a connected subwoofer handles deeper bass, helping improve clarity and reduce unnecessary low-frequency demands on smaller speakers. Adjustable bass and treble controls allow you to personalize your listening experience, while a dedicated Bypass mode disables the tone adjustments for a more direct audio signal.\u003c\/p\u003e  \u003cp\u003eThe Fosi Audio BT20A MAX also offers thoughtful features that make everyday listening more convenient. Its motorized analog volume potentiometer provides smooth, precise volume adjustments from the front panel or the included infrared remote, which also controls power, input selection, Bluetooth playback, and other functions. A dedicated 12V trigger input enables synchronized power on\/off with compatible audio components, while its compact enclosure makes it an excellent fit for desktop systems, small listening rooms, and modern Hi-Fi setups. Whether you're upgrading a traditional stereo system, adding wireless streaming, or building a versatile 2.1-channel audio setup, the BT20A MAX delivers powerful performance in a convenient, space-saving design.\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 BT20A MAX\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Bluetooth stereo integrated amplifier with powered subwoofer output\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmplifier Class:\u003c\/strong\u003e Class-D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eChannel Configuration:\u003c\/strong\u003e 2.0 stereo \/ 2.1 with powered subwoofer\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmplifier Chip:\u003c\/strong\u003e Texas Instruments TPA3255\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOperational Amplifier Chip:\u003c\/strong\u003e NE5532\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmplifier Technology:\u003c\/strong\u003e Post-Filter Feedback (PFFB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum Rated Output Power:\u003c\/strong\u003e 300 watts × 2 at 4 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRMS Output Power:\u003c\/strong\u003e 180 watts × 2 at 4 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupported Speaker Impedance:\u003c\/strong\u003e 2–8 ohms\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20Hz–20kHz (±0.5dB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e At least 112dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion + Noise:\u003c\/strong\u003e 0.003% or less\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSINAD:\u003c\/strong\u003e At least 96dB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePower Supply Architecture:\u003c\/strong\u003e Independent digital and analog power supply sections\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Power Supply:\u003c\/strong\u003e 48V\/5A DC power adapter, standard version\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupported DC Voltage Range:\u003c\/strong\u003e 32–48V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAnalog Audio Inputs:\u003c\/strong\u003e 2 stereo RCA input pairs (RCA1 and RCA2)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWireless Audio Input:\u003c\/strong\u003e Bluetooth\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpeaker Outputs:\u003c\/strong\u003e Left and right binding-post speaker terminals\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSubwoofer Output:\u003c\/strong\u003e 1 RCA line-level output for a powered subwoofer\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger:\u003c\/strong\u003e 1 trigger input for synchronized power control\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Version:\u003c\/strong\u003e 6.0\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Processor:\u003c\/strong\u003e Qualcomm QCC3095\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Device Name:\u003c\/strong\u003e Fosi Audio BT20A MAX\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Audio Codecs:\u003c\/strong\u003e SBC, AAC, aptX, aptX HD, aptX Adaptive, aptX Lossless, and LDAC\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum Bluetooth Audio Resolution:\u003c\/strong\u003e Up to 24-bit\/96kHz PCM with compatible sources and codecs\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Wireless Range:\u003c\/strong\u003e Up to 15 meters (approximately 50 feet) under suitable conditions\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInput Selection:\u003c\/strong\u003e Dedicated front-panel power\/input selection button\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInput Indicators:\u003c\/strong\u003e LEDs for Bluetooth, RCA1, and RCA2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e Motorized analog potentiometer\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTone Controls:\u003c\/strong\u003e Independent bass and treble adjustment\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTone Bypass:\u003c\/strong\u003e Dedicated rear-panel Tone\/Bypass switch\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-Pass Filter:\u003c\/strong\u003e Switchable 80Hz HPF for main speaker outputs\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-Pass Filter Control:\u003c\/strong\u003e Rear-panel on\/off switch\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 on\/off, mute, volume adjustment, input selection, Bluetooth reset, and Bluetooth playback controls\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRemote Battery Requirement:\u003c\/strong\u003e 2 AAA batteries, not included\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e12V Trigger Function:\u003c\/strong\u003e Automatically powers the amplifier on\/off with a compatible component providing a 12V trigger signal\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCooling System:\u003c\/strong\u003e Integrated quiet fan and optimized chassis ventilation\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCooling Efficiency:\u003c\/strong\u003e Approximately 30% improved cooling efficiency compared with the BT20A Pro\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRecommended Speaker Type:\u003c\/strong\u003e Passive bookshelf or floorstanding speakers\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSubwoofer Compatibility:\u003c\/strong\u003e Powered subwoofers with compatible RCA line-level inputs\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBluetooth Antenna:\u003c\/strong\u003e External detachable antenna\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\u003eOptical\/Coaxial Digital Inputs:\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\u003eHeadphone Output:\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 BT20A MAX amplifier, Bluetooth antenna, infrared remote control, 48V\/5A 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\u003ePowerful Class-D Stereo Amplification:\u003c\/strong\u003e The Texas Instruments TPA3255 amplifier delivers 180 watts RMS per channel into 4 ohms, providing substantial power for compatible passive bookshelf and floorstanding speakers.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Bluetooth 6.0 Streaming:\u003c\/strong\u003e The Qualcomm QCC3095 processor supports LDAC, aptX Lossless, aptX HD, aptX Adaptive, and other Bluetooth codecs for high-quality wireless music playback from compatible devices.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eClean, Detailed Audio with PFFB Technology:\u003c\/strong\u003e Post-Filter Feedback circuitry, independent power supply sections, and a signal-to-noise ratio of at least 112dB help deliver precise stereo imaging, low distortion, and excellent musical clarity.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eVersatile 2.1-Channel System Integration:\u003c\/strong\u003e Dual RCA inputs, a dedicated powered subwoofer output, and a switchable 80Hz high-pass filter make it easy to build a complete stereo system with deeper bass and improved speaker performance.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eConvenient Remote and Audio Controls:\u003c\/strong\u003e A motorized analog volume control, included infrared remote, independent bass and treble adjustments, and Tone Bypass mode provide convenient control over your listening experience.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eReliable Performance and Smart Power Management:\u003c\/strong\u003e An enhanced cooling system and 12V trigger input help maintain stable amplification while making the BT20A MAX easy to integrate with other compatible Hi-Fi components.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch4\u003eFAQ Section\u003c\/h4\u003e  \u003cp\u003e\u003cstrong\u003eQ: How much power does the Fosi Audio BT20A MAX deliver?\u003c\/strong\u003e\u003cbr\u003e A: The Fosi Audio BT20A MAX is rated to deliver 180 watts RMS per channel into 4 ohms, with a maximum advertised output of 300 watts per channel into 4 ohms. Powered by the Texas Instruments TPA3255 Class-D amplifier chip, it provides substantial amplification for compatible passive speakers. Actual output depends on speaker impedance, power supply, and listening conditions.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio BT20A MAX support Bluetooth streaming?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The BT20A MAX features Bluetooth 6.0 powered by the Qualcomm QCC3095 processor. It supports SBC, AAC, aptX, aptX HD, aptX Adaptive, aptX Lossless, and LDAC codecs, with audio resolutions up to 24-bit\/96kHz when paired with compatible Bluetooth sources and codecs.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I connect a subwoofer to the Fosi Audio BT20A MAX?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The BT20A MAX features a dedicated RCA subwoofer output for connecting a powered subwoofer. It also includes a switchable 80Hz high-pass filter that reduces low-frequency output to the main speakers, allowing them to focus on midrange and higher frequencies while the subwoofer provides deeper bass. The subwoofer output cannot directly power a passive subwoofer.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio BT20A MAX have a 12V trigger?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The BT20A MAX includes a dedicated 12V trigger input that enables synchronized power on\/off with a compatible preamplifier, DAC, streamer, or other component equipped with a 12V trigger output.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: What audio inputs are available on the Fosi Audio BT20A MAX?\u003c\/strong\u003e\u003cbr\u003e A: The BT20A MAX includes two stereo RCA analog input pairs and Bluetooth wireless connectivity. The RCA connections can accommodate compatible CD players, DACs, streamers, and other line-level sources, while Bluetooth provides wireless audio streaming from smartphones, tablets, and computers. Only one input source can be selected at a time.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I adjust the bass and treble on the Fosi Audio BT20A MAX?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The BT20A MAX includes independent bass and treble controls for adjusting the sound to your preferences. A rear-panel Tone\/Bypass switch lets you disable these adjustments when you prefer a more direct audio signal without the amplifier's internal tone processing.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Does the Fosi Audio BT20A MAX include a remote control?\u003c\/strong\u003e\u003cbr\u003e A: Yes. The BT20A MAX includes an infrared remote that controls power, volume, mute, input selection, and Bluetooth playback functions. Its motorized analog volume knob physically adjusts when volume changes are made using the remote. The remote requires two AAA batteries, which are not included.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eQ: Can I connect a turntable to the Fosi Audio BT20A MAX?\u003c\/strong\u003e\u003cbr\u003e A: Yes. A turntable can connect to either RCA input, provided it has a built-in phono preamplifier or is connected through an external phono preamp. The BT20A MAX does not include a dedicated phono stage, so a turntable's phono-level signal must be converted to line level before playback.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":62887252328607,"sku":"FOS-BT20AMAX-BLK","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/720a6638-0346-4917-a2c7-2c1aad82f77b.jpg?v=1791561327","url":"https:\/\/listenup.com\/products\/fosi-audio-bt20a-max-bluetooth-2-1-channel-stereo-amplifier","provider":"ListenUp","version":"1.0","type":"link"}