Orion CB2000.4 Cobalt Series 4 Channel Amplifier RMS Watts @ 4 Ohm Stereo 14.4V:  150 Watts X 4 Channel / RMS Watts @ 2 Ohm Stereo 14.4V: 250 Watts X 4 Channel / RMS Watts @ 4 Ohm Bridge 14.4V: 500 Watts X 2 Channel RMS Power Watts: 2000 Watts / Max Power Watts: 4000 Watts Frequency Response 10Hz~36KHz(-3dB) Signal Noise Ratio: 90dB Hi Pass Freq. 50Hz-4KHz / Low Pass Freq. 40Hz-500Hz