This monaural Class A/B subwoofer amplifier delivers 500 watts @ 8 ohms and 950 watts @ 4 ohms. It has a patented tracking down-converter power supply for high efficiency, low frequency parametric equalizer, sophisticated soft clip circuitry to improve headroom and protect woofers, switchable subsonic and bass boost filters, high pass loop-out and high level, low level and LFE inputs. This unit also features manual, auto, or 12V triggered on/off, phase, gain and crossover adjustment, along with pop-out adjustment knobs and removable rack ears.