This bluetooth audio power amplifier module is a good choice to replace the damaged one, it can provide good performance. The 2.1 channel power amplifier board is easy to install and use, convenient to replace. The 2.1 channel power amplifier module can provide a stable and fast connection and has a wide compatibility. The power amplifier board provides two ways of input: bluetooth and AUX input. The power amplifier module allows you to adjust frequency, volume, treble, bass, etc. Size: 118x100x22mm. Bluetooth Version: 5.0(no shielding, 10m). Input sensitivity: 500mV. Audio Input: AUX+Bluetooth. Channel: 2.1. Chip: TPA3116D2. Power: DC12-24V/5A. Adapter speaker: 20-100W, 4-8ohm. Output power: Max.50W.(R and L channel), Max.100W(subwoofer) Colour:black Material: ABS Package Contents: 1 Set x amplifier board. 1 x English User manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.