AUDIOPIPE APSM-4050 640W 4 Channel Car MINI Amplifier BRAND NEW AUDIOPIPE APSM-4050 640 WATT 4 Channel Car MINI Amplifier RMS Power: 50 Watt x 2 Channel @ 4 Ohm 80 Watt x 2 Channel @ 2 Ohm 320 Watt RMS