Amplifier -TPA3116D2 Digital2.1 Bluetooth 5.0 Audio Amplifier Board With Bluetooth And Case Highlights generic brand TPA3116D2 Digital2.1 Bluetooth 5.0 Audio Amplifier Board With Bluetooth And Case Description: This is a Bluetooth 5.0 audio receiver set up-to-date, with a preamp, bass crossover processing. With bass, left and right channel volume adjustment, treble adjustment, total volume potentiometer controls the 2.1 amplifier board. Use DC power supply: 12-24V power supply, maximum support 50W (left channel) +50W (right channel) + 100W (bass channel) three-channel output. Is the use of TPA3116D2 high-performance digital amplifier chip as the core, a parallel bridge subwoofer output, perform left and right channel output. Wide working voltage, energy-saving design, efficiency up to 90%. You can use good performance switching power supply, laptop switching power supply, you can also use the charging bottle, or car power supply, etc. The board is a good test of the finished product The board is soldered, according to the figure connected to a good speaker, audio input, or connect the Bluetooth audio device, and connected to the power can be used specification: Material: metal, plastic Size: 101x100x25mm/3.98x3.94x0.98inch Color: as picture shown Case Size: 110x100x25mm/3.98x3.94x0.98inch. Material: Acrylic, Color: Clear Package Include: 1 Piece Digital 2.1 Audio Amplifier Board (with Bluetooth) 1 Piece Acrylic Case Note: Tips: If you need power supply, please choose this: 24 Amplifier Power Supply V 6A and if you need subwoofer speaker, please choose: 4OHM Subwoofer