Seismic Audio - Shockwave4000 - 2 Channel Power Amplifier - 600 Watts RMS @ 8 Ohms per Channel Model Number: Shockwave 4000 2 Channel Amplifier 2 x 600 Watts RMS @ 8 Ohms 2 x 900 Watts RMS @ 4 Ohms 1 x 1200 Watts RMS @ 8 Ohm Bridge