{"product_id":"64-audio-fourte-universal-hybrid-in-ear-monitors","title":"64 Audio Fourté Universal Hybrid In-Ear Monitors","description":"\u003ch3\u003e64 Audio Fourté Universal Hybrid In-Ear Monitors\u003c\/h3\u003e \u003cp\u003eThe 64 Audio Fourté is a groundbreaking flagship UIEM that redefined what’s possible in portable audio. As the first IEM to fully integrate the patented tia™ system—including open balanced armature drivers, acoustic chambers, and single-bore architecture—Fourté delivers unmatched resolution, imaging, and an expansive out-of-head soundstage. With a hybrid driver design that includes a dynamic low driver and three balanced armatures, Fourté achieves rich bass, lush mids, and stunningly airy highs. Featuring an anodized black aluminum shell, copper anodized faceplate, and a hand-patinated copper chip, each unit is a one-of-a-kind fusion of art and engineering.\u003c\/p\u003e \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDriver Configuration\u003c\/strong\u003e: 1 Dynamic Low, 1 tia Mid, 1 High-Mid, 1 tia High\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFrequency Response\u003c\/strong\u003e: 5 Hz – 22 kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSensitivity\u003c\/strong\u003e: 114 dB\/mW @ 1 kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImpedance\u003c\/strong\u003e: 10 Ω @ 1 kHz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCrossover\u003c\/strong\u003e: Integrated 4-Way Passive Crossover\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApex Isolation\u003c\/strong\u003e: -20 dB (Internally Integrated Apex System)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eShell Material\u003c\/strong\u003e: Black Anodized Aluminum\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFaceplate\u003c\/strong\u003e: Copper Anodized Aluminum with Patina-Treated Copper Chip\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCable\u003c\/strong\u003e: 3.5mm Black Premium Cable – Silver-Plated OCC Copper (7x7x4 Multi-Twist, 26 AWG, 0.23Ω)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories\u003c\/strong\u003e: Premium Leather Case, TrueFidelity Foam Tips (S\/M\/L), SpinFit Silicone Tips (S\/M\/L), Standard Silicone Tips (S\/M\/L), Cleaning Tool, Cable Clip, Round Sticker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTechnology\u003c\/strong\u003e: Full tia™ System, Internally Integrated apex™, Passive Radiator\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFit\u003c\/strong\u003e: Universal\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned \u0026amp; Assembled\u003c\/strong\u003e: In the USA with globally sourced components\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eExpanded Key Features List\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eComplete tia™ System\u003c\/strong\u003e: Features tia high, tia mid, and single-bore design for distortion-free, transparent sound.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDynamic Low Driver\u003c\/strong\u003e: Produces deep, authoritative bass with natural impact and speed.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInternally Integrated apex™\u003c\/strong\u003e: Provides -20 dB of isolation while relieving ear pressure for improved comfort and soundstage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHybrid Driver Tuning\u003c\/strong\u003e: Balances rich lows, smooth mids, and ethereal highs for a reference-grade listening experience.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOut-of-Head Soundstage\u003c\/strong\u003e: Industry-leading spatial imaging creates a holographic and immersive presentation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHand-Finished Design\u003c\/strong\u003e: Each unit features a unique copper patina faceplate chip for one-of-a-kind aesthetics.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBlack Premium Cable\u003c\/strong\u003e: Silver-plated OCC copper cable ensures signal purity with low resistance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eErgonomic Shell Shape\u003c\/strong\u003e: CNC-machined for precision fit and long-term comfort in a robust aluminum chassis.\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eQ\u0026amp;A Section\u003c\/h4\u003e \u003cp\u003e\u003cstrong\u003eQ: What makes the Fourté unique in the 64 Audio lineup?\u003c\/strong\u003e\u003cbr\u003eA: Fourté is the first IEM to feature the full tia™ system and internally integrated apex™, offering an expansive soundstage and reference-grade resolution with only four drivers.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ: What type of sound signature does the Fourté provide?\u003c\/strong\u003e\u003cbr\u003eA: It delivers a wide, airy presentation with extended highs, clean mids, and impactful lows—ideal for critical listening and audiophile enjoyment.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the full tia™ system?\u003c\/strong\u003e\u003cbr\u003eA: The full tia™ system eliminates sound tubes, reducing distortion and enhancing treble clarity, spatial imaging, and transient response.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ: Does the Fourté use a dynamic driver?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it includes one dynamic driver for lows, delivering natural bass with speed and physicality.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ: How is apex™ integrated in the Fourté?\u003c\/strong\u003e\u003cbr\u003eA: Apex™ is built directly into the shell, offering -20 dB of isolation while relieving ear pressure for fatigue-free listening sessions.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ: Is every Fourté visually unique?\u003c\/strong\u003e\u003cbr\u003eA: Yes, each Fourté features a real copper faceplate chip that develops its own patina, ensuring every unit is one of a kind.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ: Can the cable be replaced or upgraded?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it uses a standard 0.78mm 2-pin connection, allowing for easy cable upgrades or replacements.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ: What comes with the Fourté package?\u003c\/strong\u003e\u003cbr\u003eA: The package includes the IEMs, premium case, three types of ear tips, black premium cable, cleaning tool, cable clip, and a round sticker.\u003c\/p\u003e","brand":"64 Audio","offers":[{"title":"Default Title","offer_id":62579084132511,"sku":"64A-FOURTE-ORA","price":3599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/6910\/4031\/files\/042912c7-8706-414d-b481-ebb9f567875e.jpg?v=1763050817","url":"https:\/\/listenup.com\/products\/64-audio-fourte-universal-hybrid-in-ear-monitors","provider":"ListenUp","version":"1.0","type":"link"}