Seismic Audio - Epicenter5004 - 4 Channel Power Amplifier - 2000 Watts RMS @ 8 Ohms - 3400 Watts RMS @ 4 Ohms Model Number: Epicenter 5004 4 Channel Amplifier;Signal Noise Ratio: &gt;99dB Power Handling: 4 x 500 Watts RMS @ 8 Ohms 4 x 850 Watts RMS @ 4 Ohms