OEM SYSTEMS MODEL 500 500-Watt Subwoofer Amp

OEM SYSTEMS MODEL 500 500-Watt Subwoofer Amp. 500W RMS @ 4ohm , 250W RMS @ 8ohm with thermal clipping limiters, Freq resp: 20Hz-300Hz, Crossover: 40Hz-120Hz, Class A/B, 0deg -180deg continuously variable phase adjustment, >.2% distortion at rated power, 2 RCA line-level inputs, Imp: 20kohm , 120V 60Hz AC input power, Auto signal sensing & always-on power modes, 10-min auto-off delay;