HIFI Digital Bluetooth Amplifier-100W*2

This HIFI Bluetooth Power Amplifier Board is designed for those who value sound quality. Equipped with AM interference suppression and filtering functions, it delivers a total harmonic distortion (THD) of as low as 0.1%, even when operating over extended periods at high power output. Enjoy a rich, clear audio output with its 100W power capacity, volume adjustment knob, and dual-channel output. Multiple input options, including AUX and Bluetooth 5.0, allow seamless connectivity with various devices like Raspberry Pi and mobile phones.

Supporting an operating voltage of DC5-27V, this board is compatible with 4~8Ω, 50W-300W passive speakers, making it versatile for different setups. The board guarantees a stable sound performance, thanks to its five high-quality 470uF capacitors and efficient heat management using a built-in heat sink. Protective panels, both top and bottom, along with safety mechanisms such as overvoltage, undervoltage, overheating, short circuit protection, and DC detection, ensure reliable use over time.

To operate, simply connect the board to your speaker and power it on. Rotate the volume knob, and you'll see the indicator LED light up. Activate the Bluetooth on your phone or Raspberry Pi, and search for “BT-WUZHI.” Once connected, you'll hear a prompt tone indicating successful pairing. The board will remember your device, reconnecting automatically whenever powered on again.

Keep in mind that optimal performance is dependent on a sufficient audio input and power supply voltage/current. The power output is directly proportional to the power supply voltage. Also, speaker impedance influences the output power; higher impedance results in lower output power, assuming the voltage and current are adequate.