This Bluetooth-compatible amplifier board automatically enters pairing mode after powering on and searching for the display device name: SANWU Audio _x005f_x000D_ _x005f_x000D_ Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Type: Voltage Regulator _x005f_x000D_ Condition: New _x005f_x000D_ Application: Speaker _x005f_x000D_ Model Number: TDA7492P 50W+50W Digital Amplifier Board _x005f_x000D_ Power supply: 2.1 interface DC 8-25V power supply _x005f_x000D_ Channel: 2 * 50w dual channel (stereo) _x005f_x000D_ Sound source input: Bluetooth-compatible connected stereo input, using CSR8633 Bluetooth-compatible chip, Bluetooth-compatible V4.0 _x005f_x000D_ Output impedance: 8 ohms (can drive 4,6,8,16 ohm impedance speakers) _x005f_x000D_ Output power: Add the previous stage NE5532 and the output power is sufficient _x005f_x000D_ Dip switch: It is more convenient to directly adjust the gain of the rear power amplifier, and better drive the horn with greater damping _x005f_x000D_ Color: blue/red (optional) _x005f_x000D_ Product size: 82 * 50 * 15mm/3.23 * 1.97 * 0.59in _x005f_x000D_ Packaging weight: 39g _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x Amplifier Board 1. Wide Voltage Range: With a 2.1 interface DC 8-25V power supply, this tda7492p amplifier board can be used with various power sources, providing versatile and reliable performance. 2. High-Fidelity Stereo Sound: Featuring dual 50W channels, this audio power amplifier board delivers high-fidelity stereo sound that immerses you in your music or audio content, delivering a rich and immersive experience. 3. Bluetooth-compatible Input: This power amplifier supports CSR8633 Bluetooth-compatible chip and Bluetooth-compatible V4.0, allowing for easy and seamless Bluetooth-compatible connection to your devices, making it perfect for wireless use. 4. Multiple Impedance Support: With an 8-ohm output impedance, this digital music amplifiers module can also drive 4, 6, and 16-ohm speakers, providing flexibility and versatility in your setup. 5. Adjustable Gain: Equipped with a dip switch that allows for convenient and direct adjustment of the post-stage amplifier gain, this audio receiver amplifier board module parts provides better damping and output power, enhancing the performance and quality of your speaker system.