Rockville RXH-F5 3200 Watt Peak/1600w RMS 5 Channel Amplifier Car Stereo Amp Rockville RXH-F5 3200 Watt Peak/1600w RMS 5 Channel Car Stereo Amplifier CEA Compliant Power Ratings: 4 Ohms: 550 Watts (4 x 50 Watts + 1 x 350) at 4 ohms and 1% THD+N 2 Ohms: 800 Watts (4 x 75 Watts + 1 x 500) at 2 ohms and 1% THD+N RMS Power Ratings 4 Ohms: 1100 Watts (4 x 100 watts + 1 x 700 Watts) 2 Ohms: 1600 Watts (4 x 150 watts + 1 x 1,000 Watts) Channels 1 through 4 are class A/B and channel 5 is mono class "D" High-Speed MOSFET Power Supply