Mini Digital Bluetooth Amplifier-50W*2

The Mini Digital Bluetooth Amplifier-50W*2 is a compact stereo audio board designed to drive passive speakers from a wireless audio source. Supporting Bluetooth 5.0 and delivering up to 50W per channel, it is ideal for makers, students, and hobbyists building custom Bluetooth speakers or Raspberry Pi sound systems.

Dual-channel 50W stereo output

This amplifier delivers up to 50W per channel to left and right stereo outputs. It is compatible with 4 ohm to 8 ohm passive speakers rated between 30W and 200W.

Wireless Bluetooth 5.0 connectivity

Pair mobile phones, Raspberry Pi boards, and Bluetooth-enabled controllers at distances of up to 15 metres in open spaces. The module connects as BT-WUZHI with an audible tone and reconnects automatically on future power-ups.

Built-in hardware protection and casing

The board features integrated overheat and short-circuit protection for reliable everyday operation. It includes top and bottom acrylic plates and an adhesive heatsink to safeguard the electronics during use.

Flexible DC power scaling

Operating across a wide 5V to 24V DC input range, output power scales with supply voltage and speaker impedance. Power delivery ranges from 12W per channel at 12V into 8-ohm loads up to over 50W per channel at 24V into 4-ohm speakers.

Integrated rotary volume control

A front-mounted rotary dial adjusts output volume and includes an integrated power indicator LED. Turning the knob turns on the board and illuminates the status LED for clear operational feedback.

Complete assembly kit included

Each unit is supplied with the stereo amplifier board, two acrylic protective plates, a heatsink, and a volume knob. An assembly hardware pack, screwdriver, and a 20cm power lead are also included in the package.