This is the best 2.1 home theater board kit with Bass and treble control. Input voltage 12-0 -12, Input current 1.5 to 3 amp, Power 100 Watt, Connect 2 speaker and 1 subwoofer. 2.1 board home theater board for replacement and project can be used for 2 channel satellite and one sub-woofer for use this circuit on full bass boost mode