AUDIOBANK P1400.4 1400W 2-Ohm Stable 4 Channel Stereo Amplifier Four class "AB" Hight-Current dual drive state. Class "AB" technology MOSFET PWM Power supply. Bridgeable & TRI-Mode operation. Continuously variable 12dB/Octave high pass & 12dB/Octave low pass connector. Subwoofer Variable Crossover for deep bass control Enhanced variable bass boost +12dB @50Hz. Enhanced variable trable boost +12dB @10kHz Chrome palted RCA & Power, Speaker terminal. Soft start & muting Overload, thermal, short circuit protection. Power & protection indicator. Remote level control.