Autotek 1100 Watt 2 Channel Mean Machine Amplifier Car Power Amp | MMA1100.2 2 Ohm: 550 Watts x 2 Channels 4 Ohm: 275 Watts x 2 Channels Bridged @ 4 ohm: 1100 Watts x 1 Channel Frequency Response: 10Hz-45KHz THD%: .5%