{"product_id":"fosi-audio-bt20a","title":"Fosi Audio BT20A","description":"\u003cp\u003eFosi Audio BT20A is a compact two-channel Class-D integrated amplifier for passive speakers, with Bluetooth and RCA inputs.\u003c\/p\u003e\u003cp\u003eIt combines straightforward wireless playback, bass and treble adjustment, and up to 100 W per channel maximum output in a small desktop-friendly chassis.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eCompact passive-speaker amplifier\u003c\/h3\u003e\u003cp\u003eProvides stereo speaker amplification without the size and complexity of a full-size receiver.\u003c\/p\u003e\u003ch3\u003eBluetooth and wired playback\u003c\/h3\u003e\u003cp\u003eSwitch between Bluetooth 5.0 streaming and an analog RCA source.\u003c\/p\u003e\u003ch3\u003eFront-panel tone control\u003c\/h3\u003e\u003cp\u003eIndependent bass and treble knobs make quick system tuning simple.\u003c\/p\u003e\n\u003ch3\u003eSimple everyday operation\u003c\/h3\u003e\u003cp\u003eA compact front panel keeps power, volume, bass and treble adjustment immediately accessible without menus or an app.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop passive-speaker systems\u003c\/li\u003e\n\u003cli\u003eBookshelf speakers in small and medium rooms\u003c\/li\u003e\n\u003cli\u003eSimple Bluetooth stereo systems\u003c\/li\u003e\n\u003cli\u003eTVs or streamers with analog line output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSystems requiring HDMI ARC, optical or USB input\u003c\/li\u003e\n\u003cli\u003eUsers needing a subwoofer output\u003c\/li\u003e\n\u003cli\u003eHeadphone listening\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBT20A powers passive speakers; it is not intended as an input for powered speakers.\u003c\/li\u003e\n\u003cli\u003eThe quoted 100 W × 2 is the manufacturer's maximum specification and depends on load and power supply.\u003c\/li\u003e\n\u003cli\u003eIt has no phono stage, so most turntables require a phono preamplifier or line-level output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media (max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important;margin-right:0!important}}.pbg__notes .emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0;\"\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioBT20A_003-00.webp?v=1758286545\" alt=\"Fosi Audio BT20A Bluetooth stereo amplifier\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioBT20A_005-00.webp?v=1758286545\" alt=\"Fosi Audio BT20A passive speaker system setup\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it drive passive speakers directly?\u003c\/h3\u003e\u003cp\u003eYes. It supports 2–8 Ω passive speakers through the rear binding posts.\u003c\/p\u003e\u003ch3\u003eCan it connect to active speakers?\u003c\/h3\u003e\u003cp\u003eNo dedicated pre-output is provided. Use BT20A to power passive speakers.\u003c\/p\u003e\u003ch3\u003eDoes it have a subwoofer output?\u003c\/h3\u003e\u003cp\u003eNo.\u003c\/p\u003e\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\u003cp\u003eOnly when the turntable has a built-in phono stage or an external phono preamplifier is used.\u003c\/p\u003e\u003ch3\u003eDoes it support aptX?\u003c\/h3\u003e\u003cp\u003eThe official specification lists Bluetooth 5.0 but does not specify aptX support.\u003c\/p\u003e\u003ch3\u003eCan I connect a TV?\u003c\/h3\u003e\u003cp\u003eYes, when the TV provides compatible analog audio output; there is no optical or HDMI input.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eBluetooth speaker system\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: Phone \/ tablet\u003cbr\u003eConnection: Bluetooth 5.0\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\u003ch3\u003eWired stereo system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC \/ TV analog output\u003cbr\u003eConnection: RCA\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\n\u003ch3\u003eTurntable stereo system\u003c\/h3\u003e\u003cp\u003eSource icon: turntable\u003cbr\u003eSource: Turntable with built-in phono stage or external phono preamplifier\u003cbr\u003eConnection: RCA line input\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\u003cp\u003eNote: Do not connect a phono-level turntable directly unless a compatible phono preamplifier is used.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eInputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth 5.0\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eRCA line input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eStereo speaker binding posts\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAmplification\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eAmplifier Architecture\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eAmplifier Chipset\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eDual TI TPA3116D2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eMaximum Output Power\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e100 W × 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e2–8 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eFrequency Response\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e20 Hz–20 kHz (±1 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≥98 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eTHD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≤0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity and power\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eup to approximately 15 m \/ 50 ft without obstacles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eDC Input Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e12–24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSupplied Power Adapter\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e24 V \/ 4.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: BT20A or BT20A Pro?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:520px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT20A\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT20A Pro\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eAmplifier chip\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eDual TPA3116D2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eMaximum output\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e100 W × 2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e300 W × 2 at 4 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003ePre-out\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e3.5 mm variable pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eBest use\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eSimple compact stereo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eHigher-output expandable stereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ EU","offer_id":43721462186077,"sku":"Fosi-Audio-BT20A-Black-EU","price":398.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ US","offer_id":43721462218845,"sku":"Fosi-Audio-BT20A-Black-US","price":407.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ UK","offer_id":43672438833245,"sku":"Fosi-Audio-BT20A-Black-UK","price":407.0,"currency_code":"BRL","in_stock":true},{"title":"Black \/ AU","offer_id":43721462153309,"sku":"Fosi-Audio-BT20A-Black-AU","price":407.0,"currency_code":"BRL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT20A_d330e9a2-7028-4099-a066-f2c1da41e853.webp?v=1785219705","url":"https:\/\/emiuzek.com\/pt-br\/products\/fosi-audio-bt20a","provider":"EMiUZEK","version":"1.0","type":"link"}