{"product_id":"fosi-audio-v3-stereo","title":"Fosi Audio V3 Stereo Power Amplifier — TPA3255, 300W x 2, 48V\/5A Supply","description":"\u003cp class=\"tp-summary\"\u003eThe Fosi Audio V3 is a compact 2-channel Class D power amplifier built on the Texas Instruments TPA3255, rated up to 300W × 2 into 4Ω, with swappable NE5532 op-amps and a 48V\/5A power adapter in the box. It suits desktop and bookshelf systems that need to drive passive 2–8Ω speakers from an RCA source.\u003c\/p\u003e\n\u003ch2\u003eWho the Fosi Audio V3 is for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive speakers on a desk:\u003c\/strong\u003e At 105mm wide, 35mm tall and 547g, the V3 fits on a desk or shelf and drives passive speakers rated 2–8Ω.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore output power:\u003c\/strong\u003e This bundle pairs the V3 with the 48V\/5A adapter rather than Fosi's 32V\/5A option, and higher supply voltage gives the amp more output power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower after a DAC or preamp:\u003c\/strong\u003e The stereo RCA input takes a DAC, CD player or preamp (a turntable needs a built-in or separate phono preamp); with a preamp in front, you can leave the V3 knob near 3 o'clock and set the level at the preamp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOp-amp rolling:\u003c\/strong\u003e The two stock NE5532 op-amps swap out for 8-pin dual op-amps such as Sparkos SS3602, MUSES02 or OPA2134PA, which Fosi says lets you tailor the sound signature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdding a subwoofer:\u003c\/strong\u003e The 3.5mm pre-out can feed a powered subwoofer, active speakers or a second amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkip it if:\u003c\/strong\u003e You need Bluetooth, a digital input or bass\/treble controls; the V3 has one analog RCA input and a single power\/volume knob, and RCA and speaker cables are not included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFosi Audio V3 key specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier chip:\u003c\/strong\u003e Texas Instruments TPA3255, Class D, 2 channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax output power:\u003c\/strong\u003e 300W × 2 at 4Ω (Fosi maximum rating)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeaker impedance:\u003c\/strong\u003e 2–8Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs and outputs:\u003c\/strong\u003e Stereo RCA line in; L\/R speaker terminals (banana plug or bare wire); 3.5mm pre-out\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated performance:\u003c\/strong\u003e SINAD 88dB, SNR ≥110dB, THD ≤0.003%, noise floor 140µV, frequency response 20Hz–20kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOp-amps:\u003c\/strong\u003e 2 × NE5532, swappable for 8-pin dual op-amps (e.g., Sparkos SS3602, MUSES02, OPA2134PA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower input:\u003c\/strong\u003e 24–48V DC; 48V\/5A adapter included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and weight:\u003c\/strong\u003e 166 × 105 × 35mm (6.5 × 4.1 × 1.4 in), 547g (1.2 lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black aluminum-alloy chassis; volume knob in black or orange, depending on the option\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e V3 amplifier, 48V\/5A power adapter, user manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"tp-trust\"\u003eGenuine Fosi Audio stock. Free shipping on every order, 45-day returns.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":46286608433287,"sku":"Fosi Audio V3 48V5A black-","price":119.99,"currency_code":"USD","in_stock":true},{"title":"Orange Knob","offer_id":46286608466055,"sku":"Fosi Audio V3 48V5A orange-","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/5833\/0247\/files\/13869969987.jpg?v=1792722682","url":"https:\/\/tonepier.com\/products\/fosi-audio-v3-stereo","provider":"TonePier","version":"1.0","type":"link"}