Planet Audio (1) 1200 Watt 2-Channel Car Amplifier + (2) 1500W 12" Car Subwoofer RMS Power Rating (2 ohms): 420 watts x 2 channel 1500 Watts Peak Power RMS Power Rating (Bridged, 4 ohms): 840 watts x 1 channel 750 Wats RMS Pulse width modulated MOSFET power supply