Hi-Energy Mosfet power supply 250W RMS @ 2 Ohms 12dB/oct. crossover Variable low pass crossover (50Hz-250Hz) Variable 12dB/oct subsonic filter 10Hz-50Hz Variable phase shift 0-180 degrees Variable 0dB - 12dB bass boost Bass gain remote control Power & protection LED Thermal / short circuit / over-loading protection 2 ohm stable AB class amplification circuit Soft start/mute circuit