The wiring is very simple, especially for beginner DIY. With cooling fan, good heat dissipation performance. The circuit uses a total of 6 disassembled power amplifier tubes and 2 disassembled large capacitors, 4 of which are responsible for the left and right channels, and the other 2 are connected to the BTL circuit for subwoofer use. Working voltage: AC dual 18-24V (recommended dual 24V). Maximum output power: left and right channels 100Wx2 subwoofer 120Wx1. Output impedance: 4-16 ohms Made of high quality electronic components, stable and reliable performance.The whole circuit board is designed reasonably and with low noise. The potentiometers from left to right are the subwoofer volume, treble adjustment, and the total volume of the left and right channels.

Specification:
Item Type: Subwoofer Power Amplifier Board
Working Voltage: AC Double 18-24V 100W Transformer
Peak Output Power: 3x80W
Maximum Subwoofer Output: 120W
Maximum Left And Right Channel Output: 100W+100W
Load Impedance: 8ohm
Frequency Response: 20Hz-30kHz
Distortion: 1%

Package List:
1 x Power Amplifier Board
4 x Nut
1 x User Manual 

Note:

Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.