{"product_id":"fosi-audio-bt20a-pro-bluetooth-class-d-stereo-amplifier-with-tpa3255-chip-300w-2-output-pre-out-and-audiophile-grade-performance","title":"Fosi Audio BT20A Pro Bluetooth Class-D Stereo Amplifier with TPA3255 Chip, 300W × 2 Output, Pre-Out, and Audiophile-Grade Performance","description":"\u003cp data-start=\"219\" data-end=\"527\"\u003eThe Fosi Audio BT20A Pro is an upgraded Bluetooth stereo amplifier designed for high-performance home audio and desktop Hi-Fi systems. Built around the powerful \u003cstrong data-start=\"380\" data-end=\"432\"\u003eTexas Instruments TPA3255 Class-D amplifier chip\u003c\/strong\u003e, it delivers strong output, low distortion, and excellent efficiency in a compact form factor.\u003c\/p\u003e\n\u003cp data-start=\"529\" data-end=\"745\"\u003eWith up to \u003cstrong data-start=\"540\" data-end=\"565\"\u003e300W × 2 output at 4Ω\u003c\/strong\u003e, the BT20A Pro provides enough power to drive a wide range of passive speakers—from bookshelf setups to medium-sized floorstanding systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"747\" data-end=\"969\"\u003eIt features \u003cstrong data-start=\"759\" data-end=\"789\"\u003eBluetooth 5.0 connectivity\u003c\/strong\u003e for seamless wireless streaming, along with an RCA input for wired sources such as DACs, TVs, CD players, or turntables (via phono preamp). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"971\" data-end=\"1203\"\u003eA major upgrade over the standard BT20A is the inclusion of a \u003cstrong data-start=\"1033\" data-end=\"1051\"\u003e3.5 mm pre-out\u003c\/strong\u003e, allowing connection to a powered subwoofer or external amplifier—making it suitable for building a 2.1 system. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1205\" data-end=\"1437\"\u003eThe amplifier also includes \u003cstrong data-start=\"1233\" data-end=\"1266\"\u003ebass and treble tone controls\u003c\/strong\u003e with center detents for neutral sound, and \u003cstrong data-start=\"1310\" data-end=\"1333\"\u003ereplaceable op-amps\u003c\/strong\u003e, giving advanced users the option to customize sound signature. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1439\" data-end=\"1630\"\u003eDespite its small size, it offers strong performance with \u003cstrong data-start=\"1497\" data-end=\"1541\"\u003elow THD (≤0.005%) and high SNR (≥108 dB)\u003c\/strong\u003e, ensuring clean and detailed audio reproduction. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1632\" data-end=\"1635\"\u003e\n\u003ch2 data-section-id=\"155rk9w\" data-start=\"1637\" data-end=\"1669\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1640\" data-end=\"1667\"\u003ePerformance Highlights:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1670\" data-end=\"1924\"\u003e• High-power output up to 300W × 2 @ 4Ω\u003cbr data-start=\"1709\" data-end=\"1712\"\u003e• TPA3255 Class-D amplifier chip for clean, efficient sound\u003cbr data-start=\"1771\" data-end=\"1774\"\u003e• Bluetooth 5.0 + RCA input for flexible connectivity\u003cbr data-start=\"1827\" data-end=\"1830\"\u003e• Pre-out for subwoofer (2.1 system support)\u003cbr data-start=\"1874\" data-end=\"1877\"\u003e• Replaceable op-amps for sound customization\u003c\/p\u003e\n\u003chr data-start=\"1926\" data-end=\"1929\"\u003e\n\u003ch2 data-section-id=\"7p9fey\" data-start=\"1931\" data-end=\"1969\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1934\" data-end=\"1969\"\u003eWhy You Should Buy This Product\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1971\" data-end=\"2238\"\u003e• ⭐ Best value Bluetooth Hi-Fi amp in this price range\u003cbr data-start=\"2025\" data-end=\"2028\"\u003e• ⭐ Powerful enough for most home speaker setups\u003cbr data-start=\"2076\" data-end=\"2079\"\u003e• ⭐ Supports subwoofer via pre-out (rare at this price)\u003cbr data-start=\"2134\" data-end=\"2137\"\u003e• ⭐ Clean, detailed sound with low distortion\u003cbr data-start=\"2182\" data-end=\"2185\"\u003e• ⭐ Compact size perfect for desktop or living room\u003c\/p\u003e\n\u003chr data-start=\"2240\" data-end=\"2243\"\u003e\n\u003ch2 data-section-id=\"1j5qwet\" data-start=\"2245\" data-end=\"2264\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2248\" data-end=\"2264\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2266\" data-end=\"2594\"\u003e• Class-D stereo amplifier (TPA3255)\u003cbr data-start=\"2302\" data-end=\"2305\"\u003e• Bluetooth 5.0 wireless streaming\u003cbr data-start=\"2339\" data-end=\"2342\"\u003e• RCA input (wired audio source)\u003cbr data-start=\"2374\" data-end=\"2377\"\u003e• Speaker binding post outputs\u003cbr data-start=\"2407\" data-end=\"2410\"\u003e• 3.5 mm pre-out (subwoofer \/ external amp)\u003cbr data-start=\"2453\" data-end=\"2456\"\u003e• Bass and treble tone controls (center detent)\u003cbr data-start=\"2503\" data-end=\"2506\"\u003e• Replaceable op-amps (sound tuning)\u003cbr data-start=\"2542\" data-end=\"2545\"\u003e• Compact aluminum chassis with passive cooling\u003c\/p\u003e\n\u003chr data-start=\"2596\" data-end=\"2599\"\u003e\n\u003ch2 data-section-id=\"id1bjs\" data-start=\"2601\" data-end=\"2632\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2604\" data-end=\"2632\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2634\" data-end=\"2735\"\u003e\u003cstrong data-start=\"2634\" data-end=\"2645\"\u003eGeneral\u003c\/strong\u003e\u003cbr data-start=\"2645\" data-end=\"2648\"\u003e• Product Type: Bluetooth Stereo Amplifier\u003cbr data-start=\"2690\" data-end=\"2693\"\u003e• Brand: Fosi Audio\u003cbr data-start=\"2712\" data-end=\"2715\"\u003e• Model: BT20A Pro\u003c\/p\u003e\n\u003cp data-start=\"2737\" data-end=\"3161\"\u003e\u003cstrong data-start=\"2737\" data-end=\"2760\"\u003eAudio \u0026amp; Performance\u003c\/strong\u003e\u003cbr data-start=\"2760\" data-end=\"2763\"\u003e• Amplifier Type: Class-D (TPA3255)\u003cbr data-start=\"2798\" data-end=\"2801\"\u003e• Output Power: Up to 300W × 2 @ 4Ω \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"2874\" data-end=\"2877\"\u003e• Frequency Response: 20 Hz – 20 kHz (±1.2 dB) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"2961\" data-end=\"2964\"\u003e• THD: ≤0.005% \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"3016\" data-end=\"3019\"\u003e• Signal-to-Noise Ratio: ≥108 dB \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"3089\" data-end=\"3092\"\u003e• Speaker Impedance: 2 – 8Ω \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3163\" data-end=\"3299\"\u003e\u003cstrong data-start=\"3163\" data-end=\"3179\"\u003eConnectivity\u003c\/strong\u003e\u003cbr data-start=\"3179\" data-end=\"3182\"\u003e• Bluetooth: Yes (AAC \/ SBC codecs, ~15m range) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"3269\" data-end=\"3272\"\u003e• Wired Input: RCA stereo\u003c\/p\u003e\n\u003cp data-start=\"3301\" data-end=\"3388\"\u003e\u003cstrong data-start=\"3301\" data-end=\"3312\"\u003eOutputs\u003c\/strong\u003e\u003cbr data-start=\"3312\" data-end=\"3315\"\u003e• Speaker Output: Binding posts\u003cbr data-start=\"3346\" data-end=\"3349\"\u003e• Pre-Out: 3.5 mm (volume-controlled)\u003c\/p\u003e\n\u003cp data-start=\"3390\" data-end=\"3474\"\u003e\u003cstrong data-start=\"3390\" data-end=\"3402\"\u003eControls\u003c\/strong\u003e\u003cbr data-start=\"3402\" data-end=\"3405\"\u003e• Volume Control: Yes\u003cbr data-start=\"3426\" data-end=\"3429\"\u003e• Bass Control: Yes\u003cbr data-start=\"3448\" data-end=\"3451\"\u003e• Treble Control: Yes\u003c\/p\u003e\n\u003cp data-start=\"3476\" data-end=\"3602\"\u003e\u003cstrong data-start=\"3476\" data-end=\"3485\"\u003ePower\u003c\/strong\u003e\u003cbr data-start=\"3485\" data-end=\"3488\"\u003e• Power Supply: 32V \/ 48V external adapter\u003cbr data-start=\"3530\" data-end=\"3533\"\u003e• DC Input Range: 24V – 48V \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3604\" data-end=\"3754\"\u003e\u003cstrong data-start=\"3604\" data-end=\"3625\"\u003ePhysical \u0026amp; Design\u003c\/strong\u003e\u003cbr data-start=\"3625\" data-end=\"3628\"\u003e• Dimensions: ~5 × 5 × 1 inches \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"3699\" data-end=\"3702\"\u003e• Chassis: Aluminum\u003cbr data-start=\"3721\" data-end=\"3724\"\u003e• Cooling: Passive (fanless)\u003c\/p\u003e\n\u003chr data-start=\"3756\" data-end=\"3759\"\u003e\n\u003ch2 data-section-id=\"rizf6l\" data-start=\"3761\" data-end=\"3776\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3764\" data-end=\"3776\"\u003eIncluded\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3778\" data-end=\"3980\"\u003e• 1 × Fosi Audio BT20A Pro Amplifier\u003cbr data-start=\"3814\" data-end=\"3817\"\u003e• 1 × Power Adapter (32V or 48V depending on bundle)\u003cbr data-start=\"3869\" data-end=\"3872\"\u003e• 1 × Bluetooth Antenna\u003cbr data-start=\"3895\" data-end=\"3898\"\u003e• 1 × AC Power Cable\u003cbr data-start=\"3918\" data-end=\"3921\"\u003e• 1 × User Manual\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":52892704997695,"sku":"BT20A Pro","price":11999.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0014\/5942\/1272\/files\/61ne1lo34ML._SL1500.jpg?v=1777726006","url":"https:\/\/audiomaxx.in\/products\/fosi-audio-bt20a-pro-bluetooth-class-d-stereo-amplifier-with-tpa3255-chip-300w-2-output-pre-out-and-audiophile-grade-performance","provider":"Audiomaxx India","version":"1.0","type":"link"}