Model: DC 12V LM3886 4X70W Four-channel front and rear integrated power amplifier board
Size: 255X104X58mm
Power supply voltage: DC 12V (battery)
Output impedance: 4-8 ohms
Output power: 4X70W
Potentiometer function and spacing: 25MM (front bass, front treble. Front volume. Left and right surround volume)
Op Amps, Power Tubes: NE5532 LM3886