Orion XTR1000.1D XTR Series Amplifier RMS Watts @ 4 Ohm Stereo 12.6V:  400 Watts X 1 Channel / RMS Watts @ 2 Ohm Stereo 12.6V: 700 Watts X 1 Channel / RMS Watts @ 1 Ohm Stereo 12.6V: 1000 Watts X 1 Channel RMS Power Watts: 2000 Watts Frequency Response 15Hz~250KHz(-2.5dB) Signal Noise Ratio: 90dB Hi Pass Freq. 15Hz-250Hz / Low Pass Freq. 15Hz-250Hz