HIFI Digital Bluetooth Amplifier-50W*2

The HIFI Digital Bluetooth Amplifier-50W*2 is a compact dual-channel audio amplifier board delivering up to 50W per channel via Bluetooth 5.0 and AUX inputs. Featuring built-in AM interference filtering and comprehensive circuit protection, it is an ideal choice for makers, hobbyists, and students building custom audio stations, smart speakers, or Raspberry Pi sound projects.

Clear dual-channel stereo output

Featuring integrated AM interference suppression and active filtering, the amplifier achieves total harmonic distortion as low as 0.1 percent under high-power output. It drives left and right stereo channels smoothly to provide clear, high-fidelity sound across DIY audio systems.

Bluetooth 5.0 and AUX connectivity

The module supports both 3.5mm AUX wired audio input and wireless Bluetooth 5.0 transmission up to 15 metres in unobstructed spaces. This allows effortless pairing with mobile phones, Raspberry Pi single-board computers, and other Bluetooth-enabled controllers.

Built-in multi-stage circuit protection

To safeguard both your amplifier and connected speakers during heavy use, the board includes protection against overvoltage, undervoltage, overheating, and short circuits. It also features DC detection and top and bottom protective panels for added physical durability.

Wide voltage and speaker compatibility

The board operates on a 5V to 27V DC power supply and supports 30W to 200W passive speakers with 4 to 8 ohm impedance. Power output scales with supply voltage, reaching over 55W per channel when powered at 24V with 4 ohm speakers.

Straightforward setup and controls

An onboard rotary knob handles power and volume control, accompanied by an LED status indicator. The module provides a prompt tone upon pairing to BT-WUZHI and automatically reconnects to your device when powered on again.

Complete hardware and accessory kit

Each unit comes with the main amplifier board, two acrylic protective plates, a heatsink, an adjustment knob, a 20cm power wire, a screwdriver, and an accessories mounting pack for easy assembly.