{"product_id":"fosi-audio-bt20a-pro-bluetooth-50-amplifier-300w-x2-wireless-amp-tpa3255-2-channel-mini-class-d-integrated-home-audio-outdoor-stereo-receiver-with-bass-treble-control-for-passive-speakers_df01eb92","title":"Fosi Audio BT20A Pro Bluetooth 5.0 Amplifier, 300W x2 Wireless Amp, TPA3255 2 Channel Mini Class D Integrated Home Audio Outdoor Stereo Receiver with Bass Treble Control for Passive Speakers","description":"300 Watts x 2 Power Output: The TI TPA3255 chip amplifier has a feedback design and high-speed gate driver error connection for efficient and quality audio performance. with a low idle loss of \u0026lt;2.5W\u003cbr\u003eHigh-Efficiency: The chip amplifier has replaceable Op-Amps for a custom approach when compared to the BT20A amplifier. Further. you can swap the 2 plug-in NE5532 Op-Amps for LME49720HA. MUSES02. OPA2604AP. OPA2134PA. LM4562. or NJM4556AD Op-Amps to achieve distinct sound qualities. It boasts an SNR≥108dB and THD≤0.005%\u003cbr\u003eBluetooth 5.0 Connectivity: The Bluetooth pair can be removed by pressing and holding the volume control for 5 seconds. and it also has a memory function for easy pairing and an alert tone for convenience\u003cbr\u003eCustom Sound with Bass and Treble Controls: The BT20A Pro home audio amplifier has a sound control design so that you can experience sound without effects by setting treble and bass effects to the middle point\u003cbr\u003ePackage Contents: The package contains a BT20A Pro power amplifier. a Bluetooth antenna. a 32V\/5A power adapter. an AC cord. and a user manual\u003cbr\u003e\u003cli\u003eTHD: ≤ 0.005%; SNR: ≥108dB; \u003c\/li\u003e\u003cli\u003eMAX Output Power: 300Wx2@4Ω （Using a 48V10A Power Supply）\u003c\/li\u003e\u003cp\u003e *Note: It should be emphasized that 300W refers to the maximum power supported by the product's chip. which can only be achieved with a 48V 10A power supply. The power supply's voltage and current determine the amplifier's maximum output. For more details. please refer to the illustration below on Power Variability. \u003c\/p\u003e1Bluetooth 5.02Treble\/Bass Control3PRE-OUT1Power Variability2Back Side3Front Side1TPA3255 CHIP2Replaceable OP CHIP3High Power Inductors\u003cp\u003e 1. Check Connections \u0026amp; Device Compatibility: (1)Ensure all audio cables are fully inserted and undamaged. Replace any frayed cables with high-quality shielded ones(recommended: cables with metal connectors). (2)Confirm your speakers' power rating(e.g.. 50W\/100W) and impedance(e.g.. 4Ω\/8Ω) match the amplifier's requirements(see product manual).(3)Avoid raising the volume beyond your speakers' labeled maximum(e.g.. “Max 80%\") to prevent distortion. \u003c\/p\u003e\u003cp\u003e 2. Optimize Setup \u0026amp; Audio Sources: (1)Speaker Upgrade: Use high-resolution speakers placed at least 30cm away from walls or corners. Add rugs or curtains to reduce echoes. (2) Audio Quality: Play lossless music formats(e.g.. FLAC. WAV) on dedicated devices(e.g.. music players or updated phones\/computers).(3) EQ Adjustment: Reset the equalizer to the neutral(flat) position initially. Adjust bass\/treble gradually(like adjustments to 50% of the scale). \u003c\/p\u003e\u003cp\u003e 3. Reduce Environmental Interference: \u003c\/p\u003e\u003cp\u003e (1) Anti-Interference Cables: Use shielded RCA cables with grounding(metal-shell connectors) to minimize buzzing. \u003c\/p\u003e\u003cp\u003e (2) Distance from Interference: Keep audio\/Bluetooth cables ≥30cm away from routers. power outlets. or microwaves. \u003c\/p\u003e\u003cp\u003e (3) Troubleshoot Sources: Test the same song on another phone\/computer. If the noise persists. contact support for a replacement. \u003c\/p\u003e\u003cp\u003e Note: This product is designed to prioritize Bluetooth over RCA when both are connected and doesn't support dual-input playback simultaneously. \u003c\/p\u003e\u003ch1\u003e Bluetooth amp stereo\u003c\/h1\u003e\u003ch3\u003e Fosi Audio BT20A Pro 600W TPA3255 Bluetooth 2.0 CH Amplifier \u003c\/h3\u003e\u003ch4\u003e Bluetooth Transmission Format: SBC\/AAC \u003c\/h4\u003e\u003ch4\u003e Unique Design for Sound Control \u003c\/h4\u003e\u003ch4\u003e Full-range Pre-Out Output \u003c\/h4\u003e\u003ch4\u003e Texas Instrument TPA3255 Chip \u003c\/h4\u003e\u003ch4\u003e Achieve a Distinct and Exceptional Sound Quality \u003c\/h4\u003e\u003ch4\u003e High Precision and Stability Inductance Values \u003c\/h4\u003e\u003ch1\u003e Friendly Solutions Guide \u003c\/h1\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":68098581692452,"sku":"661713833978888195-40967052-0-0-0-0-0-0","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2874\/9092\/files\/ca19b08116f46af644f1de11e744ae6935ad9b5fcfbb207c40469bba6f6abdee.jpg?v=1794481335","url":"https:\/\/sr5sqzdn.cyou\/products\/fosi-audio-bt20a-pro-bluetooth-50-amplifier-300w-x2-wireless-amp-tpa3255-2-channel-mini-class-d-integrated-home-audio-outdoor-stereo-receiver-with-bass-treble-control-for-passive-speakers_df01eb92","provider":"BAUDER SARE","version":"1.0","type":"link"}