3X(2.1 channel power amplifier board description: 1. The remote control, U disk, and AUX terminals have been connected to the Bluetooth power amplifier board. The corresponding plugs must be inserted and functions can be matched to work. You cannot solder lines yourself, and there is a risk of burning the Bluetooth chip.
2. Power and power supply: regulated switching power supply: up to 20V; 12V power supply maximum power 2*15+30W 4Ω; 20V power supply maximum power 2*25+50W 8Ω

Product name: 2.1 channel subwoofer power amplifier board
Supply voltage: 12-20V DC
Supply current: 3-5A
Maximum power: 2*25W+50W 8Ω
Minimum power: 2*15W+30W 4-8Ω
Bluetooth version: 5.0
Channel: 2.1
Job type: Class D
Product size: 96 x 48mm
color:Blue
Material:PCB+Metal

Package Contents:
1 x Bluetooth power amplifier board
1 x AUX audio cable)