Looking for a powerful Bluetooth amplifier board for your next DIY audio project? The HIFI Digital Bluetooth Amplifier-100W×2 is a high-performance audio amplifier that offers high-fidelity sound with ultra-low distortion and is designed to work seamlessly with 4Ω–8Ω passive speakers. Whether you're connecting it to a Raspberry Pi, smartphone, or another Bluetooth-enabled controller, this 2 channel stereo amplifier board delivers outstanding performance and flexibility for any home theater audio setup. With built-in AM interference suppression and filtering technology, this Class D Bluetooth audio receiver ensures the total harmonic distortion (THD) is as low as 0.1%, ensuring clear, stable, and high-quality sound output even at high volumes. This wireless stereo amplifier board supports both Bluetooth 5.0 and AUX input, providing dual connectivity options for your sound system. It also includes a volume control knob, heat sink, top/bottom acrylic protective panels, and multiple protection mechanisms. Key Features Output Power: 100W × 2 (stereo) Bluetooth Amplifier Board Input Modes: AUX + Bluetooth 5.0 Audio Amplifier Audio Quality: Hi-Fi level with THD as low as 0.1% Operating Voltage: DC 5V–27V Compatible Speakers: 4Ω–8Ω, 50W–300W passive speakers Bluetooth Range: Up to 15 meters (without obstacles) Built-in Protection: Overvoltage, undervoltage, overheating, short circuit, and DC detection Capacitor Design: Equipped with five high-quality 470μF capacitors for stable power output Heat Dissipation: Includes a heat sink and efficient power module for thermal management Performance by Voltage Power Supply 8Ω Speakers 4Ω Speakers 12V 24W + 24W 40W + 40W 15V 32W + 32W >60W + 60W 19V 64W + 64W >92W + 92W 24V 76W + 76W >110W + 110W Note: Maximum output power depends on adequate voltage and current. The lower the speaker impedance, the higher the output power (assuming sufficient power supply). How to Use Connect the amplifier board to passive speakers. Power the board via DC (5–27V). Turn the knob to power on – the LED indicator will light up. Enable Bluetooth on your phone or Raspberry Pi. Search for "BT-WUZHI" and connect. A prompt tone will confirm successful pairing. The device auto-reconnects on future startups. Package Contents 1 × HIFI Digital Bluetooth Amplifier-100W×2 2 × Acrylic Protective Panels (Top & Bottom) 1 × Screwdriver 1 × Heat Sink 1 × 20cm Power Wire 1 × Volume Knob 1 × Accessories Kit
