Rockville RXD-F20 Micro Car/ATV Amplifier 1600w Peak 4 Channel 4x100W/CEA Rated Rockville RXD-F20 1600 Watt Peak / 800w RMS 4 Channel Car Stereo Amplifier CEA Compliant Power Ratings: .....300 Watts (4 x 75 Watts) @ 4 Ohms and 1% THD+N .....400 Watts (4 x 100 Watts) @2 Ohms &lt; 1% THD .....400 Watts (2 x 200 Watts) Bridged @ 4 Ohms &lt; 1% THD RMS Power Ratings: .....600 Watts (4 x 150 Watts RMS) @ 2 Ohms .....800 Watts (2 x 400 Watts RMS) @ 4 Ohm Bridged .....800 Watts (4 x 200 Watts RMS) @ 4 Ohms Peak Power: .....1600 Watts (2 x 800 @ 2 Ohms or 1 x 1600 @ 4 Ohms) High-Speed MOSFET Power Supply