{"title":"Fosi audio","description":"\u003cp\u003e\u003cspan\u003eThe Fosi Audio brand offers premium home audio solutions for the audiophile and professional markets.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-sourcepos=\"3:1-3:60\"\u003e\u003cstrong\u003eFosi Audio: Revolutionizing HiFi with Exceptional Value.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"5:1-11:52\"\u003e\n\u003cli data-sourcepos=\"5:1-5:62\"\u003e\n\u003cstrong\u003eRevolutionizing:\u003c\/strong\u003e We're innovators, pushing HiFi forward.\u003c\/li\u003e\n\u003cli data-sourcepos=\"6:1-11:52\"\u003e\n\u003cstrong\u003eExceptional Value:\u003c\/strong\u003e\n\u003cul data-sourcepos=\"7:5-11:52\"\u003e\n\u003cli data-sourcepos=\"7:5-7:60\"\u003e\n\u003cstrong\u003eSuperior Sound:\u003c\/strong\u003e High-end sound, accessible prices.\u003c\/li\u003e\n\u003cli data-sourcepos=\"8:5-8:61\"\u003e\n\u003cstrong\u003eCutting-Edge Tech:\u003c\/strong\u003e Innovative features and designs.\u003c\/li\u003e\n\u003cli data-sourcepos=\"9:5-9:64\"\u003e\n\u003cstrong\u003eUser Focused:\u003c\/strong\u003e Products are made through user feedback.\u003c\/li\u003e\n\u003cli data-sourcepos=\"10:5-10:74\"\u003e\n\u003cstrong\u003eAffordable Quality:\u003c\/strong\u003e Premium sound without the premium price tag.\u003c\/li\u003e\n\u003cli data-sourcepos=\"11:5-11:52\"\u003e\n\u003cstrong\u003eTrusted Brand:\u003c\/strong\u003e We deliver on our promises.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"product_id":"fosi-audio-n3-portable-bluetooth-headphone-amplifier","title":"Fosi Audio N3 Portable Bluetooth Headphone Amplifier","description":"\u003ch4\u003eThe Fosi Audio N3 combines dual Bluetooth and 3.5mm connectivity for high-fidelity, low-latency listening anywhere—functioning as both a portable amplifier and desktop receiver for headphones up to 300 Ohms. Its compact design features intuitive controls including a rotary volume knob, gain switch, and bass boost toggle, all powered by the professional-grade OPA1656 op-amp engineered by audio experts with two decades of experience. With a 1200mAh lithium battery delivering up to 10 hours of playback and isolated power circuitry ensuring pristine sound quality, the N3 captures every musical detail without compromise.\u003c\/h4\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826524471348,"sku":"N3","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/B0CJB45YFM.MAIN.webp?v=1779384672"},{"product_id":"fosi-audio-ph05-5-channel-headphone-amplifier","title":"Fosi Audio PH05 5 Channel Headphone Amplifier","description":"\u003ch4\u003eThe Fosi Audio PH05 is a professional-grade five-channel headphone amplifier and splitter that lets you connect up to five headphones to a single audio source. Each channel delivers independent 310mW@32Ω power output, supporting headphones and IEMs with impedance from 16 to 300 ohms—ideal for studios, podcasting, teaching, or shared listening environments. Individual volume controls on each channel let listeners adjust their own levels without affecting others, while a master volume knob and quick-mute button streamline operation. The PH05 combines advanced circuitry with exceptional specs: 105dB SNR, 0.001% THD, and 25μV noise floor for pristine audio reproduction. Built from solid aluminum alloy with anti-slip feet, the compact design delivers durability and stability. An upgrade from the PH04, the PH05 adds an extra channel and increased power output. Backed by Fosi Audio's 24-month warranty.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826531876916,"sku":"PH05-12V","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/B0CYLSD4GJ.MAIN.webp?v=1779385232"},{"product_id":"fosi-audio-t20x-bluetooth-tube-amplifier-headphone","title":"Fosi Audio T20X Bluetooth Tube Amplifier Headphone","description":"\u003ch4\u003eThe Fosi Audio T20X is a versatile 2-in-1 tube amplifier that combines a Bluetooth 5.0 home audio receiver with dedicated headphone amplification. Equipped with JAN 5654W vacuum tubes, it delivers warm, rich sound while driving passive speakers and headphones with up to 100W per channel at 4Ω. Bluetooth 5.0 connectivity provides stable wireless streaming up to 50 feet, while the replaceable tube design lets you customize your sonic character. With a TPA3221 amplifier chip, low distortion (≤0.05%), and exceptional signal-to-noise ratio (≥105dB), the T20X offers high-fidelity performance for desktop and home listening. The package includes the amplifier, vacuum tubes, antenna, power adapter, and a 24-month warranty.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826537349172,"sku":"T20X-24V","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/001_78fee2b9-f876-44c8-9d2d-8ab40db37860.webp?v=1779385674"},{"product_id":"fosi-audio-im4-open-back-in-ear-monitor","title":"Fosi Audio IM4 Open-Back In-Ear Monitor","description":"\u003ch4\u003eThe Fosi Audio IM4 Open-Back In-Ear Monitor delivers audiophile-grade sound through dual N52 magnets, a dual-chamber design, and a 10mm beryllium driver that creates a wide soundstage with crisp detail. The open-back design and acoustic damping wool eliminate resonance and harshness, producing a balanced, fatigue-free listening experience ideal for discerning listeners. At just 7g per earpiece, these IEMs offer exceptional comfort for extended wear, with hypoallergenic metal housings that feel premium and refined. Precision-machined from aluminum with a distinctive orange metal grille, they combine minimalist aesthetics with excellent build quality. Customize your sound with three eartip options (Bass, Deep Bass, Balanced) and two interchangeable nozzles (Brass, Aluminum) to fine-tune your preferred frequency response, all connected via a detachable 2-pin 0.78mm cable compatible with 3.5mm and 4.4mm connectors.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Black","offer_id":47826538496052,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":47826538528820,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/Capturadepantalla2026-05-15123912.png?v=1779385870"},{"product_id":"fosi-audio-ds3-portable-dac-headphone-amp","title":"Fosi Audio DS3 Portable Dac Headphone Amp","description":"\u003ch4\u003eExperience immersive 360° surround sound without any software installation. The Fosi Audio DS3 features proprietary spatial audio technology that transforms multichannel game audio into expansive 7.1 surround, delivering precise directional cues and realistic depth. Even stereo sources benefit from enhanced spaciousness and lifelike soundstaging. In demanding titles like Delta Force: Hawk Ops and Forza Horizon 5, 7.1 surround mode brings battlefields and racing environments to vivid life with authentic spatial awareness and distance perception.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Black","offer_id":47826547802164,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":47826547834932,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/001_740ee9de-3c1f-494e-a04b-29841c080e7a.webp?v=1779386206"},{"product_id":"fosi-audio-sk02-desktop-dac-headphone-amplifier","title":"Fosi Audio SK02 Desktop DAC Headphone amplifier","description":"\u003ch4\u003eThe Fosi Audio SK02 is a premium desktop DAC and headphone amplifier that combines elegant minimalist design with exceptional audio performance. Featuring the acclaimed ESS SABRE ES9038Q2M DAC chipset, it delivers studio-grade sound with a remarkable 120dB signal-to-noise ratio and virtually imperceptible distortion at just 0.001% THD. This versatile device handles high-resolution audio up to DSD256 and PCM 32-bit\/384kHz, while its balanced 4.4mm output generates 1100mW of power—sufficient to drive virtually any headphone or IEM from 16 to 300 ohms with authority. The intuitive interface features a responsive multi-function knob and quick-access gain switches, with intelligent indicator lights displaying input mode and sample rate. Beyond headphone amplification, the SK02 functions as a preamp for active speakers or integrated amplifiers, making it an ideal foundation for a high-fidelity desktop or compact home audio system. Built from precision-machined aluminum and backed by a comprehensive 24-month warranty, this plug-and-play solution requires no driver installation and accepts both USB and optical inputs for seamless integration with computers, media players, and video sources.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826548260916,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/Capturadepantalla2025-10-30134442.png?v=1779386816"},{"product_id":"fosi-audio-gr70-tube-headphone-amp","title":"Fosi Audio GR70 Tube Headphone Amp","description":"\u003ch4\u003eThe Fosi Audio GR70 delivers authentic tube amplification through a dual-stage design featuring 5654W voltage tubes and 6Ж4 power tubes, creating warm, transparent sound with exceptional clarity. Its impedance-switching capability accommodates headphones from 16Ω to 300Ω, while dual headphone outputs (6.35mm and 3.5mm) and RCA connectivity integrate seamlessly into any audio setup. The precision-engineered aluminum chassis houses intuitive controls—volume, bass, treble, and impedance selection—enabling quick optimization for your listening preferences. With 300mW output power and 97dB signal-to-noise ratio, this compact amplifier combines vintage tube character with modern engineering, ideal for discerning listeners seeking enhanced headphone performance and system flexibility.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826551472180,"sku":null,"price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/GR70.webp?v=1779392724"},{"product_id":"fosi-audio-i5-headphone","title":"Fosi Audio i5 Headphone","description":"\u003ch4\u003eThe Fosi Audio i5 delivers studio-level sound precision with its nano-thin diaphragm and stealth magnets, producing high-resolution audio with minimal distortion for a true-to-life listening experience. Its 97mm ultra-large diaphragm, with a 2μm thickness and magnetron-sputtered silver alloy coating, captures intricate details while maintaining durability. Designed for comfort, it features a memory-steel headband, multi-axis pivoting earcups, silicone sliders for fine adjustments, and breathable protein leather ear pads to reduce fatigue. Crafted with handcrafted walnut chambers, a CNC-milled aluminum frame, and genuine sheepskin headband, it combines luxury with durability. Powerful 44 N50 neodymium magnets and an open-back grille deliver a clear, spacious soundstage.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826633523252,"sku":null,"price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/Capturadepantalla2025-10-24152148_e7d34e93-01fd-4f6c-ba06-3bb0b18694a0.png?v=1779393154"},{"product_id":"fosi-audio-zh3-dac-headphone-amp","title":"Fosi Audio ZH3 DAC Headphone Amp","description":"\u003ch4\u003eThe Fosi Audio ZH3 combines a high-performance DAC, headphone amplifier, and preamplifier in one compact desktop unit. Featuring the AKM4493SEQ DAC and XMOS XU316 processor, it delivers pristine audio up to PCM 768kHz\/32bit and DSD512 with ultra-low distortion. Its self-developed fully balanced amplifier circuitry and noise-reducing components ensure an exceptionally clean sound floor at just 1.9μV noise. With both 6.35mm single-ended and 4.4mm balanced outputs, plus a versatile 3-level gain switch, it drives headphones from 16Ω to 300Ω with ease, making it ideal for critical listening on a wide range of HiFi headphones and active speakers.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826634113076,"sku":null,"price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/fosi-audio-zh3-headphone-dac-amp-review-v0-Oj4TMNRgGJBnhrTx0Xb3aFoN4aMWl-7WK4hsp_PZTmY.webp?v=1779393345"},{"product_id":"fosi-audio-box-x4-phono-preamp-headphone-amplifier-with-jan-5654w-vacuum-tubes-for-mm-turntable-phonograph-preamplifier","title":"Fosi Audio Box X4 Phono Preamp \u0026 Headphone Amplifier with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Preamplifier","description":"\u003ch4\u003eThe Fosi Audio Box X4 combines dedicated phono preamplification with integrated headphone amplification in a single compact unit. Purpose-built MM cartridge input with low-noise signal conversion and grounding protection ensures pristine vinyl playback, while auxiliary inputs accommodate digital sources. Tube-based architecture supports multiple vacuum tube variants—5654W, 6K4, 6J1, 6J4, GE5654, 6AK5, and others—allowing personalized sonic tuning through component swapping. Dual output configuration enables simultaneous line-level and headphone monitoring. Package includes 12V power supply, documentation, and 18-month warranty with dedicated customer support.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826639618100,"sku":"Box X4-12V","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/1_23f71b08-8ab3-4646-a3da-62a869a3e11b.webp?v=1779393805"},{"product_id":"fosi-audio-sk01-headphone-amplifier-preamplifier","title":"Fosi Audio SK01 Headphone Amplifier \u0026 Preamplifier","description":"\u003ch4\u003eThe Fosi Audio SK01 combines headphone amplification and analog preamplification in a single portable device, delivering 2400mW RMS at 32 ohms across impedances spanning 16 to 300 ohms. Three-band tone control—treble, midrange, and bass—with center-detent positioning enables precise acoustic customization, while the PURE button defeats all EQ for transparent signal path operation. Dual 3.5mm connectors accommodate line-level inputs and outputs, with additional 3.5mm and 6.35mm headphone jacks providing universal compatibility across consumer and professional headphones. The isolated power architecture eliminates ground-loop interference, ensuring clean signal reproduction during extended listening sessions. An integrated high-capacity battery delivers up to six hours of continuous operation, establishing the SK01 as an ideal companion for desktop audio work or portable use. The precision-engineered aluminum alloy chassis reflects meticulous craftsmanship while maintaining a compact footprint. Whether functioning as a dedicated headphone amplifier, customizable preamp, or parametric equalizer, the SK01 adapts to diverse audio applications with exceptional versatility and sonic performance.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826645942324,"sku":"SK01","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/001_54f7ccfb-73dc-458c-871d-9b08fc31f2d5.webp?v=1779394113"},{"product_id":"fosi-audio-ds2-2024-new-mini-audio-usb-dac-headphone-amplifier","title":"Fosi Audio DS2 2024 New Mini Audio USB DAC Headphone Amplifier","description":"\u003ch4\u003eThe Fosi Audio DS2 elevates portable audio with dual Cirrus Logic CS43131 DAC chips supporting DSD256 and PCM up to 32-bit\/384kHz resolution, delivering exceptional high-fidelity reproduction. Output power reaches 170mW per channel at 32 ohms across both 3.5mm single-ended and 4.4mm balanced headphone connectors, accommodating impedances from low to high without compromise. The architecture achieves extraordinary performance metrics: 1μV noise floor, 0.0001% THD, 130dB SNR, and 109dB SINAD, ensuring transparent signal integrity and minimal audible artifacts. Independent 60-step volume control with memory function provides granular gain adjustment without battery drain on your source device. Universal compatibility spans iPhone 15 series, iPad Pro, Android smartphones, and computers via USB-C, functioning seamlessly as both portable amplifier and external sound card. The precision CNC-machined aluminum chassis with shock-resistant construction reflects meticulous engineering standards. A 24-month warranty and responsive customer support complete this essential accessory for audiophiles demanding studio-grade audio quality across mobile and desktop platforms.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826648891444,"sku":"DS2","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/6160wu0ZoPL._AC_SL1500.jpg?v=1779394528"},{"product_id":"fosi-audio-k5-pro-gaming-dac-headphone-amplifier-mini-hi-fi-stereo-for-ps5pcmacsmartphone","title":"Fosi Audio K5 Pro Gaming DAC Headphone Amplifier Mini Hi-Fi Stereo for PS5PCMACSmartphone","description":"\u003ch4\u003eThe Fosi Audio K5 Pro represents a significant evolution in portable gaming audio, combining DAC, headphone amplifier, and microphone interface in a single compact device. USB Type-C, Optical, and Coaxial inputs accommodate PS5, computers, smartphones, and MAC systems, while the dual-function USB-C port enables simultaneous charging and audio input on mobile devices. The Texas Instruments NE5532 op-amp architecture delivers exceptionally low noise and distortion (THD ≤0.003%, SNR ≥110dB), preserving sonic detail across all frequency ranges. Headphone output spans 16 to 300 ohms with power delivery reaching 1000mW at 16 ohms, driving professional-grade monitors and consumer headphones with authority. USB Type-C supports up to 24-bit\/96kHz resolution, while Optical and Coaxial inputs extend to 24-bit\/192kHz for maximum fidelity. Master volume, bass, treble, and input mode controls provide comprehensive audio customization. RCA outputs connect to amplifiers or powered speakers, establishing the K5 Pro as an essential external sound card for competitive gamers and critical listeners demanding transparent digital conversion.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826655608884,"sku":"K5 PRO","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/51iGAMywh4L._AC_SL1004.jpg?v=1779394887"},{"product_id":"fosi-audio-q4-mini-stereo-gaming-dac-headphone-amplifier-audio","title":"Fosi Audio Q4 Mini Stereo Gaming DAC \u0026 Headphone Amplifier Audio","description":"\u003ch4\u003eThe Fosi Audio Q4 is a plug-and-play digital-to-analog converter and headphone amplifier that requires no drivers or software setup. It accepts USB, Optical, and Coaxial S\/PDIF inputs from computers, gaming consoles, and digital audio devices, with RCA outputs for amplifiers or powered speakers. The built-in headphone amp delivers 160mW RMS at 32 ohms with low distortion, supporting headphones from 16 to 200 ohms. Adjustable bass and treble controls let you fine-tune your sound, while preamp mode manages volume for desktop setups. This compact unit handles high-resolution audio up to 24-bit\/192kHz with minimal jitter, maintaining signal purity. Output protection circuitry shields your gear from damage. Perfect for gamers and audio enthusiasts who want clean digital conversion and amplification in a minimalist design.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826661376052,"sku":"Q4","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/51ahAHhZF6L._AC_SL1500.jpg?v=1779395294"},{"product_id":"fosi-audio-mc331-tube-integrated-bluetooth-amplifier-with-dac-and-vu-meter","title":"Fosi Audio MC331 Tube Integrated Bluetooth Amplifier with DAC and VU Meter","description":"\u003ch4\u003eThe Fosi Audio MC331 consolidates DAC, integrated amplifier, preamplifier, and headphone amplifier functions into a single compact chassis, eliminating the need for separate components. Dual 5654W vacuum tubes impart harmonic warmth and natural musicality while the animated VU meter provides visual feedback synchronized to your music. Comprehensive connectivity includes Bluetooth, USB, Coaxial, Optical, and RCA inputs, accommodating turntables, streaming devices, computers, and legacy audio sources. The tube-driven output stage delivers 105W per channel at 4 ohms, sufficient to drive most bookshelf and floor-standing speakers with authority. Independent bass and treble controls accessible via remote enable precise tonal adjustment from your listening position, while replaceable tube design permits sonic customization through tube rolling. Pre-out and 3.5mm headphone outputs expand system flexibility, making the MC331 an elegant solution for audiophiles seeking tube warmth without sacrificing modern connectivity or convenience.\u003c\/h4\u003e","brand":"Fosi","offers":[{"title":"Default Title","offer_id":47826732613684,"sku":"MC331-32V","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/files\/61Ng2ptejcL._SL1500.jpg?v=1779397702"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7030\/5588\/collections\/LOGO_12667642-b259-4001-9fc4-c6fe1d656fba.png?v=1779314557","url":"https:\/\/www.theheadphoneshop.com\/collections\/fosi-audio.oembed","provider":"The Headphone Shop","version":"1.0","type":"link"}