Power Acoustik RZ4-1200D 1200W Class D 4 Channel Amplifier 1200-Watt max power, 100-Watt X 4 at 4-ohm, 150-Watt X 4 at 2-ohm, 300-Watt X 2 at 4-ohm bridged 4-Ohm bridged/2-ohm stereo class D full range MOSFET PWM power supply