{"title":"Fosi Audio","description":"\u003cp\u003eFosi Audio makes small, affordable desktop gear that punches distinctly above its price — headphone amps, DAC\/amp combos and compact power amps aimed at people building a desk system on a real budget.\u003c\/p\u003e\n\u003cp\u003eThe appeal is straightforward: enough clean power for most headphones and bookshelf speakers, useful input flexibility, and prices that leave room in the budget for the headphones themselves. A sensible first desktop upgrade if you've outgrown a dongle.\u003c\/p\u003e\u003cp\u003eAuthorized retailer. Free US shipping over $49, 45-day returns, 1-year warranty.\u003c\/p\u003e","products":[{"product_id":"fosi-audio-k5-pro","title":"Fosi Audio K5 PRO Gaming DAC Amp — USB-C\/Optical, Mic In","description":"\u003cp\u003eThe K5 PRO is a compact gaming DAC\/amp that takes USB-C, optical or coaxial input and adds a mic passthrough — an easy sound-card upgrade for a PS5, a Switch or a desktop PC where the onboard jack is noisy.\u003c\/p\u003e\u003cp\u003ePhysical volume, bass and treble knobs make on-the-fly adjustments simple mid-match, and 24-bit\/192kHz decoding with a low noise floor drives headphones cleanly. The mic input is the part console users care about: one box handles game audio and chat without a separate mixer. A sensible first upgrade before spending more on headphones.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUSB-C, optical and coaxial inputs\u003c\/li\u003e\n\u003cli\u003eMicrophone passthrough for headsets\u003c\/li\u003e\n\u003cli\u003ePhysical volume, bass and treble controls\u003c\/li\u003e\n\u003cli\u003e24-bit\/192kHz decoding\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":45367809048711,"sku":"TP-FOSI-AUDIO-K5-PRO","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12574162413.jpg?v=1785401858"},{"product_id":"fosi-audio-sk02","title":"Fosi Audio SK02 Desktop DAC\/Amp — ES9038Q2M, 4.4mm Balanced","description":"\u003cp\u003eThe SK02 is a palm-sized desktop DAC\/amp built around the ESS ES9038Q2M, with both 3.5mm single-ended and 4.4mm balanced outputs delivering up to 755mW at 32 ohms.\u003c\/p\u003e\u003cp\u003eIt decodes PCM up to 32-bit\/384kHz and DSD256 over USB-C and doubles as a preamp through its 3.5mm line out, so it can sit between a computer and a pair of powered monitors as easily as it drives headphones. Strong value under $100 if you want balanced output and real desk power without committing to a full stack.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eESS ES9038Q2M DAC over USB-C\u003c\/li\u003e\n\u003cli\u003e3.5mm and 4.4mm balanced outputs, up to 755mW at 32 ohms\u003c\/li\u003e\n\u003cli\u003ePCM 32-bit\/384kHz, DSD256\u003c\/li\u003e\n\u003cli\u003eDoubles as a preamp via 3.5mm line out\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns, 1-year warranty.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":45367809114247,"sku":"TP-FOSI-AUDIO-SK02","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12585496548.jpg?v=1785401869"},{"product_id":"fosi-audio-zh3","title":"Fosi Audio ZH3 Desktop DAC\/Amp — AK4493SEQ, 2570mW Balanced","description":"\u003cp\u003eThe ZH3 is Fosi's all-in-one desktop hub: an AKM AK4493SEQ DAC, an XMOS XU316 USB stage, and a fully balanced amp section pushing 2,570mW into 32 ohms from the 4.4mm output. That is enough power for planars and demanding full-size headphones, not just IEMs.\u003c\/p\u003e\u003cp\u003eXLR and RCA preamp outputs, three gain levels, bass and treble EQ, six digital filters, swappable op-amps and a remote make it a genuine one-box centerpiece — headphones and powered monitors from the same source, with tone controls when a recording needs them. The three gain settings matter: drop to low gain for sensitive IEMs.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAK4493SEQ DAC, XMOS XU316 USB stage\u003c\/li\u003e\n\u003cli\u003e2,570mW into 32 ohms balanced (4.4mm)\u003c\/li\u003e\n\u003cli\u003eXLR and RCA preamp outputs, three gain levels\u003c\/li\u003e\n\u003cli\u003eBass\/treble EQ, six digital filters, swappable op-amps, remote\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":45367809179783,"sku":"TP-FOSI-AUDIO-ZH3","price":180.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12578008582.jpg?v=1785401880"},{"product_id":"fosi-audio-merak","title":"Fosi Audio Merak CD Player — CD Ripping, DAC \u0026 Headphone Amp","description":"\u003cp\u003eThe Merak is a compact top-loading CD player with a built-in CS43131 DAC and TPA6120 headphone stage, so it plays standalone straight into headphones or feeds a system through its line and optical outputs.\u003c\/p\u003e\u003cp\u003eIt also rips CDs directly to a USB drive with no computer involved, which makes it a practical way to digitize a shelf of discs you already own. Sixty-second ESP buffering guards against skips if the desk gets bumped. Good fit for anyone with a physical collection who wants one box for playback and archiving rather than a transport plus a separate DAC.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTop-loading CD transport with CS43131 DAC\u003c\/li\u003e\n\u003cli\u003eTPA6120 headphone amp stage\u003c\/li\u003e\n\u003cli\u003eRips CDs to USB with no computer needed\u003c\/li\u003e\n\u003cli\u003eLine and optical outputs, 60-second ESP buffer\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":45367809212551,"sku":"TP-FOSI-AUDIO-MERAK","price":132.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12578079282.jpg?v=1785401891"},{"product_id":"fosi-audio-sk01","title":"Fosi Audio SK01 Portable Class A Amp — 3-Band Analog EQ","description":"\u003cp\u003eThe SK01 is a battery-powered Class A analog headphone amp with a real three-band EQ — bass, mid and treble knobs, plus a Pure button that bypasses tone shaping entirely when you want the signal untouched.\u003c\/p\u003e\u003cp\u003eIt delivers up to 2,400mW at 32 ohms on high gain and doubles as an analog preamp between any source and amp, running about six hours per charge. Note there is no DAC inside: feed it from a dongle, DAP line out or desktop DAC. The right tool if you want physical tone controls instead of software EQ, or need to rescue badly mastered recordings on the move.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eClass A analog amp, up to 2,400mW at 32 ohms on high gain\u003c\/li\u003e\n\u003cli\u003eThree-band analog EQ with Pure bypass\u003c\/li\u003e\n\u003cli\u003eWorks as an analog preamp\u003c\/li\u003e\n\u003cli\u003eAround 6 hours per charge\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":45367809245319,"sku":"TP-FOSI-AUDIO-SK01","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/SK01_adc7bb25-9f40-420a-be22-05a30c490762.jpg?v=1785404434"},{"product_id":"fosi-audio-md3","title":"Fosi Audio MD3 Portable Headphone DAC\/Amp","description":"\u003cp\u003eThe Fosi Audio MD3 is a portable headphone DAC\/amp built around the ES9039Q2M chip, with a magnetic body that lets it ride on the back of a phone and an LCD display for at-a-glance status.\u003c\/p\u003e\u003cp\u003eThis is the on-the-go option for listeners who want more than a phone's own output but do not want a brick strapped to their device. The display is genuinely useful for confirming sample rate and gain instead of guessing from LED colors.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eES9039Q2M DAC chip\u003c\/li\u003e\n\u003cli\u003eMagnetic attachment, LCD display\u003c\/li\u003e\n\u003cli\u003eAuthorized retailer, 1-year warranty\u003c\/li\u003e\n\u003cli\u003eFree US shipping over $49, 45-day returns\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45377547632775,"sku":"Fosi Audio MD3-black","price":160.99,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":45377547665543,"sku":"Fosi Audio MD3-silver","price":160.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12608300693.jpg?v=1785505096"},{"product_id":"fosi-audio-bt20a-pro-48v","title":"Fosi Audio BT20A Pro Bluetooth Power Amplifier","description":"\u003cp\u003eThe Fosi Audio BT20A Pro is a mini Class D stereo power amplifier built on the TPA3255 chip, with Bluetooth input, 300W x2 output and bass and treble controls. This listing is the 48V power supply version.\u003c\/p\u003e\u003cp\u003eThe 48V variant is the one to pick when you want the amp's full output on the table for less sensitive bookshelf speakers or a larger room. Bass and treble controls are genuinely handy here since many desktop speaker placements need a little correction that a purist amp will not give you.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTPA3255 Class D, 300W x2\u003c\/li\u003e\n\u003cli\u003eBluetooth input, bass and treble controls\u003c\/li\u003e\n\u003cli\u003e48V power supply version\u003c\/li\u003e\n\u003cli\u003eFree US shipping over $49, 45-day returns\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45377577156743,"sku":"Fosi Audio BT20A Pro-48V black","price":125.99,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":45377577189511,"sku":"Fosi Audio BT20A Pro-48V blue","price":125.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12681572743.jpg?v=1785505282"},{"product_id":"fosi-audio-bt20a-pro","title":"Fosi Audio BT20A Pro Bluetooth Power Amplifier","description":"\u003cp\u003eThe Fosi Audio BT20A Pro is a mini Class D stereo power amplifier built on the TPA3255 chip, with Bluetooth input, 300W x2 output, and bass and treble controls.\u003c\/p\u003e\u003cp\u003eA staple for desktop and bookshelf speaker setups where a full-size integrated amp makes no sense. Bluetooth in means a phone can drive it directly, and the tone controls let you tame a bright pair of speakers or a reflective desk without adding EQ software to the chain.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTPA3255 Class D amplifier, 300W x2\u003c\/li\u003e\n\u003cli\u003eBluetooth input, bass and treble controls\u003c\/li\u003e\n\u003cli\u003eAuthorized retailer, 1-year warranty\u003c\/li\u003e\n\u003cli\u003eFree US shipping over $49, 45-day returns\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fosi Audio","offers":[{"title":"Blue","offer_id":45377643249799,"sku":"Fosi Audio BT20A Pro-blue","price":92.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":45377643315335,"sku":"Fosi Audio BT20A Pro-black","price":92.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12681535764.jpg?v=1785505386"},{"product_id":"fosi-audio-bt20a-pro-32v","title":"Fosi Audio BT20A Pro Bluetooth Power Amplifier","description":"\u003cp\u003eThe Fosi Audio BT20A Pro is a mini Class D stereo power amplifier using the TPA3255 chip, with Bluetooth input, 300W x2 output and bass and treble controls. This listing is the 32V power supply version.\u003c\/p\u003e\u003cp\u003eThe 32V variant suits nearfield desktop use and smaller rooms, where you are never going to ask the amp for everything it can give. If you are driving efficient bookshelf speakers a few feet away, this is the sensible version; step up to the 48V option for larger spaces or harder loads.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTPA3255 Class D, 300W x2\u003c\/li\u003e\n\u003cli\u003eBluetooth input, bass and treble controls\u003c\/li\u003e\n\u003cli\u003e32V power supply version\u003c\/li\u003e\n\u003cli\u003eFree US shipping over $49, 45-day returns\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45377648361607,"sku":"Fosi Audio BT20A Pro-32V black","price":102.99,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":45377648394375,"sku":"Fosi Audio BT20A Pro-32V blue","price":102.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12681586661.jpg?v=1785505397"},{"product_id":"fosi-audio-k7","title":"Fosi Audio K7 Bluetooth Gaming DAC\/Amp","description":"\u003cp\u003eThe Fosi Audio K7 is a Bluetooth gaming headphone amplifier and USB DAC with a microphone input, built for PS5, PC and Switch — and with enough grunt to drive planar headphones, which most console-oriented boxes cannot claim.\u003c\/p\u003e\u003cp\u003eThe mic input is the part gamers care about: one device handles both directions, so you are not splitting a headset across a mixer and a DAC. Bluetooth gives you a second, cable-free source for music between sessions, and the planar-driving capability means you can bring a real audiophile headphone to the desk instead of a gaming headset.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUSB DAC and headphone amp with mic input\u003c\/li\u003e\n\u003cli\u003ePS5, PC and Nintendo Switch compatible\u003c\/li\u003e\n\u003cli\u003eBluetooth input; capable of driving planar headphones\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio stock, 1-year warranty, 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45378036138119,"sku":"Fosi Audio K7-black","price":183.99,"currency_code":"USD","in_stock":true},{"title":"Gray","offer_id":45378036170887,"sku":"Fosi Audio K7 -grey","price":183.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12583677954.jpg?v=1785506496"},{"product_id":"fosi-audio-p2","title":"Fosi Audio P2 Portable Tube Headphone Amplifier","description":"\u003cp\u003eThe Fosi Audio P2 is a mini portable vacuum tube headphone amplifier for HiFi stereo listening — an actual tube in something you can carry, which is a rarer thing than the internet suggests.\u003c\/p\u003e\u003cp\u003eBuy it for the character, not the spec sheet: tube stages are chosen for the way they shape texture and midrange, and the P2 puts that in a form factor you can take to the office. It slots in between a source and your headphones, so pair it with a dongle DAC or a line output rather than expecting it to decode USB on its own.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePortable vacuum tube headphone amplifier\u003c\/li\u003e\n\u003cli\u003eMiniature, carry-friendly chassis\u003c\/li\u003e\n\u003cli\u003eAdds a tube stage to an existing DAC or line output\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio dealer, 1-year warranty, 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default","offer_id":45378043347079,"sku":"Fosi Audio P2","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12585347680.jpg?v=1785506519"},{"product_id":"fosi-audio-luna-3","title":"Fosi Audio LUNA 3 Belt-Drive Turntable","description":"\u003cp\u003eThe Fosi Audio LUNA 3 is a belt-drive vinyl turntable with a servo-motor-controlled platter and a built-in HiFi audio decoder. Belt drive isolates motor vibration from the platter, and servo control keeps the speed honest — the two things that separate a real turntable from a suitcase player.\u003c\/p\u003e\u003cp\u003eThe onboard decoder means you can get running without assembling a separate phono stage and DAC first, which makes this a sane entry point for someone whose digital rig is already sorted and who wants records in the same room. Give it a level, solid surface away from your speakers to keep feedback out of the groove.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBelt-drive design with servo-motor platter control\u003c\/li\u003e\n\u003cli\u003eBuilt-in HiFi audio decoder\u003c\/li\u003e\n\u003cli\u003eStraightforward setup for a first serious turntable\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio stock with 1-year warranty and 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45378046984327,"sku":"Fosi Audio LUNA 3-black","price":433.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12578445657.jpg?v=1785506531"},{"product_id":"fosi-audio-ds2","title":"Fosi Audio DS2 Mini USB DAC\/Amp Dongle","description":"\u003cp\u003eThe Fosi Audio DS2 is a mini USB DAC and headphone amplifier dongle supporting playback up to 32-bit\/768kHz. It is the pocket-sized fix for phones and laptops that either lack a headphone jack or have one that is not worth using.\u003c\/p\u003e\u003cp\u003eDongles like this are the highest-value upgrade in the hobby for most people: plug it between your phone and your IEMs and the noise floor drops while the drive improves. Keep one in the laptop bag as a travel source even if you have a full desktop stack at home.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUSB DAC and headphone amplifier in dongle form\u003c\/li\u003e\n\u003cli\u003eUp to 32-bit\/768kHz playback support\u003c\/li\u003e\n\u003cli\u003ePocketable travel and phone source\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer, 1-year warranty, free US shipping over $49.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Gray","offer_id":45378054914183,"sku":"Fosi Audio DS2-grey","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12577450897.jpg?v=1785506551"},{"product_id":"fosi-audio-c3","title":"Fosi Audio C3 USB Gaming DAC\/Amp Sound Card","description":"\u003cp\u003eThe Fosi Audio C3 is an external USB gaming sound card built on an XMOS XU316 interface with a CS43131 DAC\/amp chip driving headphones. That is a well-regarded pairing — the XU316 handles USB duties cleanly and the CS43131 is a staple of good dongles for a reason.\u003c\/p\u003e\u003cp\u003eAimed at gamers, but useful to anyone tired of noisy motherboard audio: it moves the conversion outside the PC chassis and away from the electrical mess in there. Small enough to travel with a laptop, and it works just as well for music as it does for footsteps.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eXMOS XU316 USB interface\u003c\/li\u003e\n\u003cli\u003eCS43131 DAC and headphone amp\u003c\/li\u003e\n\u003cli\u003eExternal sound card for PC gaming and music\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio stock, 1-year warranty, 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45378058911879,"sku":"Fosi Audio C3-black","price":145.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12620239893.jpg?v=1785506564"},{"product_id":"fosi-audio-lc30","title":"Fosi Audio LC30 Speaker Selector Switch","description":"\u003cp\u003eThe Fosi Audio LC30 is a 2-in-2-out speaker selector switch box with a front-panel display and remote control. Two amplifiers in, two speaker pairs out — the piece of gear that ends the routine of unscrewing binding posts every time you want to A\/B something.\u003c\/p\u003e\u003cp\u003eUseful if you run a tube amp and a solid-state amp into the same speakers, or one amp into a main pair and a second pair elsewhere in the room. The remote is the part you will appreciate on day two, when switching no longer means getting out of the chair.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2-in-2-out speaker selector\u003c\/li\u003e\n\u003cli\u003eFront-panel display\u003c\/li\u003e\n\u003cli\u003eRemote control switching\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio dealer with 1-year warranty and 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45378062549127,"sku":"Fosi Audio LC30-black","price":150.99,"currency_code":"USD","in_stock":true},{"title":"Yellow","offer_id":45378062581895,"sku":"Fosi Audio LC30-yellow","price":150.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12577642045.jpg?v=1785506576"},{"product_id":"fosi-audio-ds3","title":"Fosi Audio DS3 Balanced DAC\/Amp Dongle","description":"\u003cp\u003eThe Fosi Audio DS3 is a balanced HiFi DAC\/amp dongle carrying both a 4.4mm balanced and a 3.5mm single-ended headphone output. It's the practical pick if half your cables are balanced and half aren't, and you don't want to carry two dongles.\u003c\/p\u003e\u003cp\u003ePlug it into a phone or laptop and it becomes your portable source: 4.4mm for IEMs you've already re-terminated, 3.5mm for everything else. Handy for commuting, office listening, or as a travel backup to a desktop stack.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBalanced 4.4mm plus 3.5mm single-ended outputs\u003c\/li\u003e\n\u003cli\u003ePocketable dongle form factor for phone or laptop\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49 and 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45378068971655,"sku":"Fosi Audio DS3-black","price":95.99,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":45378069004423,"sku":"Fosi Audio DS3-silver","price":95.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12632590560.jpg?v=1785506598"},{"product_id":"fosi-audio-d2","title":"Fosi Audio D2 USB-C DAC Dongle","description":"\u003cp\u003eThe Fosi Audio D2 is an aluminum USB-C to 3.5mm DAC\/amp dongle built on the CX31993 chip, with headset microphone support passed through.\u003c\/p\u003e\u003cp\u003eIt's the everyday-carry answer to a phone with no headphone jack: small enough to leave attached to a laptop bag, and the mic support means gaming headsets and mic-equipped IEM cables still work for calls. Good as a first upgrade over a bundled adapter, or as the spare you keep in the other bag.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCX31993 DAC\/amp chip\u003c\/li\u003e\n\u003cli\u003eUSB-C in, 3.5mm out, aluminum housing\u003c\/li\u003e\n\u003cli\u003eHeadset microphone support for calls and gaming\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49 and 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default","offer_id":45378086011015,"sku":"Fosi Audio D2","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12620541344.jpg?v=1785506652"},{"product_id":"fosi-audio-im4","title":"Fosi Audio IM4 Open-Back Dynamic IEMs","description":"\u003cp\u003eThe Fosi Audio IM4 is a wired in-ear monitor using dynamic drivers in an open-back design - an unusual combination in a category dominated by sealed shells.\u003c\/p\u003e\u003cp\u003eOpen-back IEMs trade isolation for a more relaxed, less pressurized presentation, so these make more sense for home and desk listening than for a noisy commute. Run them from a dongle or desktop amp you already have, and treat them as a change of pace from your sealed daily drivers rather than a replacement for them.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDynamic driver in-ear monitors\u003c\/li\u003e\n\u003cli\u003eOpen-back shell design\u003c\/li\u003e\n\u003cli\u003eWired connection\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49 and 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Gray","offer_id":45378093580423,"sku":"Fosi Audio IM4-grey","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":45378093613191,"sku":"Fosi Audio IM4-black","price":98.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12634758530.jpg?v=1785506671"},{"product_id":"fosi-audio-v3-48v5a","title":"Fosi Audio V3 Mono Power Amplifier","description":"\u003cp\u003eThe Fosi Audio V3 is a 240W mono Class D power amplifier built on the TPA3255 with PFFB (post-filter feedback). This listing is the version bundled with the 48V\/5A power supply.\u003c\/p\u003e\u003cp\u003eAs a mono block it's aimed at subwoofer duty and at home HiFi setups where you'd rather run one amp per channel than share a stereo chassis. Buy two for a monoblock pair, or a single unit to drive a passive sub alongside your existing stereo amp. The bundled 48V\/5A supply matters - power supply choice sets what the amp can actually deliver, so match it to the configuration you're planning.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTPA3255 mono Class D, 240W\u003c\/li\u003e\n\u003cli\u003ePFFB design\u003c\/li\u003e\n\u003cli\u003eIncludes 48V\/5A power supply\u003c\/li\u003e\n\u003cli\u003eSubwoofer and home HiFi use\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns, 1-year warranty.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45378098724999,"sku":"Fosi Audio V3 48V5A-black","price":117.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12574105221.jpg?v=1785506684"},{"product_id":"fosi-audio-i5","title":"Fosi Audio I5 Open-Back Planar Magnetic Headphones","description":"\u003cp\u003eThe Fosi Audio I5 is an open-back planar magnetic headphone built around a 97mm diaphragm, aimed at professional HiFi monitoring work.\u003c\/p\u003e\u003cp\u003eLarge-diaphragm planars want a proper amp behind them, so plan on a desktop stack rather than a phone jack. Open-back means they leak both ways - excellent for a quiet room, tracking, or critical listening, not for an open office or a plane. If your current headphones are closed dynamics, expect a different kind of detail presentation and give them a full listening session before judging.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOpen-back planar magnetic design\u003c\/li\u003e\n\u003cli\u003e97mm diaphragm\u003c\/li\u003e\n\u003cli\u003eIntended for HiFi and professional monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns, 1-year warranty.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default","offer_id":45378102067335,"sku":"Fosi Audio I5","price":483.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12584133033.jpg?v=1785506696"},{"product_id":"fosi-audio-m03-32v5a","title":"Fosi Audio M03 Subwoofer Mono Amplifier","description":"\u003cp\u003eThe Fosi Audio M03 is a 300W digital mono subwoofer amplifier for home HiFi and home theater systems. 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Free US shipping over $49, 45-day returns, 1-year warranty.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45378112684167,"sku":"Fosi Audio M03 32v5a -black","price":96.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12588118873.jpg?v=1785506732"},{"product_id":"fosi-audio-q6","title":"Fosi Audio Q6 Desktop USB DAC","description":"\u003cp\u003eThe Fosi Audio Q6 is a compact desktop Hi-Fi USB DAC pairing an XMOS XU316 USB interface with an AK4493S conversion chip, supporting PCM up to 32-bit\/768kHz and DSD512.\u003c\/p\u003e\u003cp\u003eThis is the piece that goes between your computer and whatever amplifier you already own - a clean upgrade path if you've been running off motherboard audio. The small footprint suits a crowded desk, and the XMOS front end means modern USB handling rather than a legacy interface bottleneck.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eXMOS XU316 USB interface\u003c\/li\u003e\n\u003cli\u003eAK4493S DAC chip\u003c\/li\u003e\n\u003cli\u003ePCM 32-bit\/768kHz and DSD512 support\u003c\/li\u003e\n\u003cli\u003eCompact desktop chassis\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns, 1-year warranty.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default","offer_id":45378119270535,"sku":"Fosi Audio Q6","price":122.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12588028445.jpg?v=1785506755"},{"product_id":"fosi-audio-bt20a-max-48v","title":"Fosi Audio BT20A MAX Bluetooth Stereo Amplifier","description":"\u003cp\u003eThe Fosi Audio BT20A MAX is a 2.1-channel Bluetooth 6.0 HiFi Class D amplifier with PFFB, rated 300W x2. This listing is the 48V power supply version.\u003c\/p\u003e\u003cp\u003eThe 2.1 layout means you can run a stereo pair plus a subwoofer from one box, which is exactly what most desktop and small-room systems actually need. Bluetooth 6.0 covers phone and laptop sources without extra hardware, while wired inputs handle your main source. If you're building a bookshelf system from scratch, this is the amplifier that lets you skip a separate sub amp.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2.1-channel Class D with PFFB\u003c\/li\u003e\n\u003cli\u003e300W x2 rated output\u003c\/li\u003e\n\u003cli\u003eBluetooth 6.0\u003c\/li\u003e\n\u003cli\u003e48V power supply version\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAuthorized Fosi Audio retailer. Free US shipping over $49, 45-day returns, 1-year warranty.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45378125299847,"sku":"Fosi Audio BT20A MAX 48V-black","price":221.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/12623462363.jpg?v=1785506777"},{"product_id":"fosi-audio-ds1","title":"Fosi Audio DS1 Mini USB-C DAC\/Amp","description":"\u003cp\u003eThe Fosi Audio DS1 is a mini portable USB-C DAC and headphone amplifier handling DSD512 and 32-bit\/768kHz decoding in a dongle-sized package.\u003c\/p\u003e\u003cp\u003eIt's built for the phone-and-IEMs crowd: plug in, skip the built-in audio path, and get proper decoding without adding a brick to your pocket. 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