{"product_id":"fosi-audio-mc351","title":"Fosi Audio MC351","description":"\u003cp\u003eFosi Audio MC351 is a compact 2.1-channel integrated digital amplifier for passive stereo speakers and a passive subwoofer.\u003c\/p\u003e\u003cp\u003eDual TI TPA3255 amplifier chips, broad digital and analog inputs and up to 165W × 2 + 350W at 4Ω make it a practical control center for powerful 2.1 systems.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eDedicated 2.1 amplification\u003c\/h3\u003e\u003cp\u003eSeparate stereo and passive-subwoofer amplification builds a complete 2.1 system without a second power amp.\u003c\/p\u003e\u003ch3\u003eDual TPA3255 architecture\u003c\/h3\u003e\u003cp\u003eTwo TI TPA3255 amplifier chips provide high output for speakers and a passive subwoofer.\u003c\/p\u003e\u003ch3\u003eBroad source compatibility\u003c\/h3\u003e\u003cp\u003eBluetooth 5.3, USB, optical, coaxial and RCA inputs cover common music, computer and TV sources.\u003c\/p\u003e\u003ch3\u003eSystem expansion through pre-out\u003c\/h3\u003e\u003cp\u003eThe pre-out connection supports a powered subwoofer or compatible downstream equipment.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePassive bookshelf or floorstanding speaker systems\u003c\/li\u003e\n\u003cli\u003e2.1 systems using a passive subwoofer\u003c\/li\u003e\n\u003cli\u003eTV and desktop systems using optical, coaxial or USB audio\u003c\/li\u003e\n\u003cli\u003eUsers who need both wireless and wired source inputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers needing HDMI ARC or TV-remote CEC control\u003c\/li\u003e\n\u003cli\u003eHeadphone-only systems\u003c\/li\u003e\n\u003cli\u003eTurntables without a built-in or external phono preamp\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC351_005.webp?v=1758467891\" alt=\"Fosi Audio MC351 dual TPA3255 amplifier power and audio performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC351_006.webp?v=1758467891\" alt=\"Fosi Audio MC351 Bluetooth, USB, optical, coaxial and RCA inputs\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC351_007.webp?v=1758467891\" alt=\"Fosi Audio MC351 passive speaker and 2.1 subwoofer connection scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMC351 directly powers passive speakers and a passive subwoofer; these are different from line-level active speakers.\u003c\/li\u003e\n\u003cli\u003eUSB is an audio-data input, not a power input.\u003c\/li\u003e\n\u003cli\u003eRCA is line level and does not replace a phono preamp for a standard turntable.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan MC351 drive passive speakers?\u003c\/h3\u003e\u003cp\u003eYes. It is designed for 4–8Ω passive speakers.\u003c\/p\u003e\u003ch3\u003eCan it power a passive subwoofer?\u003c\/h3\u003e\u003cp\u003eYes. It has a dedicated amplified passive-subwoofer output.\u003c\/p\u003e\u003ch3\u003eCan I connect a powered subwoofer?\u003c\/h3\u003e\u003cp\u003eYes. Use the line-level pre-out with a compatible powered subwoofer.\u003c\/p\u003e\u003ch3\u003eDoes it support HDMI ARC?\u003c\/h3\u003e\u003cp\u003eNo. Use optical, coaxial or RCA audio from a television.\u003c\/p\u003e\u003ch3\u003eWhat does the USB port do?\u003c\/h3\u003e\u003cp\u003eIt receives USB digital audio from a compatible computer or source; it does not power the amplifier.\u003c\/p\u003e\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\u003cp\u003eOnly if the turntable has a built-in phono preamp or you add an external phono preamp.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003e2.1 passive speaker system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Computer, streamer or TV\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB, optical, coaxial, RCA or Bluetooth\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals + passive-subwoofer output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers + passive subwoofer\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Match speaker impedance and begin with low volume.\u003c\/p\u003e\u003ch3\u003eStereo speaker system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Any supported digital or analog source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Chosen input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Left\/right speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e 4–8Ω passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Leave the passive-subwoofer output unused for a 2.0 system.\u003c\/p\u003e\u003ch3\u003eSystem with powered subwoofer\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Any supported source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Chosen input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals + pre-out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers + powered subwoofer\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Set crossover and level on the powered subwoofer.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eCore specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003e2.1-channel integrated digital amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier chips\u003c\/td\u003e\n\u003ctd\u003eTI TPA3255 × 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum output\u003c\/td\u003e\n\u003ctd\u003e165W × 2 + 350W at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker impedance\u003c\/td\u003e\n\u003ctd\u003e4–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e≤0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR \/ Dynamic range\u003c\/td\u003e\n\u003ctd\u003e≥100dB \/ ≥100dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input range\u003c\/td\u003e\n\u003ctd\u003eDC 24–48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eInputs and outputs\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.3, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003ePassive speakers, passive subwoofer, pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB sampling\u003c\/td\u003e\n\u003ctd\u003eUp to 24-bit \/ 96kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical \/ coaxial sampling\u003c\/td\u003e\n\u003ctd\u003eUp to 32-bit \/ 192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz–20kHz (±0.5dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubwoofer output range\u003c\/td\u003e\n\u003ctd\u003e20Hz–250Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.1 passive system\u003c\/td\u003e\n\u003ctd\u003eSource → MC351 → Passive speakers + passive subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTV system\u003c\/td\u003e\n\u003ctd\u003eTV optical output → MC351 → Passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowered sub expansion\u003c\/td\u003e\n\u003ctd\u003eSource → MC351 → Passive speakers + pre-out → Powered subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the two compact Fosi Audio integrated amplifiers by their power, output structure and intended system layout.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:760px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eMC351\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eMC331\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eHigh-power 2.1 digital integrated amplifier\u003c\/td\u003e\n\u003ctd\u003eTube DAC \/ integrated stereo amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBuilt-in speaker amplifier\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum output\u003c\/th\u003e\n\u003ctd\u003e165W × 2 + 350W at 4Ω\u003c\/td\u003e\n\u003ctd\u003e105W × 2 at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMain inputs\u003c\/th\u003e\n\u003ctd\u003eBluetooth 5.3, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003ctd\u003eBluetooth, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpeaker output\u003c\/th\u003e\n\u003ctd\u003eStereo passive speakers\u003c\/td\u003e\n\u003ctd\u003eStereo passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePassive subwoofer output\u003c\/th\u003e\n\u003ctd\u003eYes, dedicated amplified output\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLine-level pre-out\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone output\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes, 3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube stage\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes, replaceable tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003ePowerful passive-speaker 2.1 system\u003c\/td\u003e\n\u003ctd\u003eCompact tube stereo and headphone system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ No Power Supply \/ US","offer_id":43722573774941,"sku":"Fosi-Audio-MC351-Black-No-Power-Supply-US","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ No Power Supply \/ EU","offer_id":43722573807709,"sku":"Fosi-Audio-MC351-Black-No-Power-Supply-EU","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ No Power Supply \/ AU","offer_id":43722573840477,"sku":"Fosi-Audio-MC351-Black-No-Power-Supply-AU","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ No Power Supply \/ UK","offer_id":43722573873245,"sku":"Fosi-Audio-MC351-Black-No-Power-Supply-UK","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ 32V Power Supply \/ US","offer_id":43722573906013,"sku":"Fosi-Audio-MC351-Black-32V-Power-Supply-US","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ 32V Power Supply \/ EU","offer_id":43722573938781,"sku":"Fosi-Audio-MC351-Black-32V-Power-Supply-EU","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ 32V Power Supply \/ AU","offer_id":43722573971549,"sku":"Fosi-Audio-MC351-Black-32V-Power-Supply-AU","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ 32V Power Supply \/ UK","offer_id":43722574004317,"sku":"Fosi-Audio-MC351-Black-32V-Power-Supply-UK","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ 48V Power Supply \/ US","offer_id":43722574037085,"sku":"Fosi-Audio-MC351-Black-48V-Power-Supply-US","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ 48V Power Supply \/ EU","offer_id":43722574069853,"sku":"Fosi-Audio-MC351-Black-48V-Power-Supply-EU","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ 48V Power Supply \/ AU","offer_id":43722574102621,"sku":"Fosi-Audio-MC351-Black-48V-Power-Supply-AU","price":863.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ 48V Power Supply \/ UK","offer_id":43722574135389,"sku":"Fosi-Audio-MC351-Black-48V-Power-Supply-UK","price":863.0,"currency_code":"BRL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC351_002.webp?v=1758467891","url":"https:\/\/emiuzek.com\/pt-br\/products\/fosi-audio-mc351","provider":"EMiUZEK","version":"1.0","type":"link"}