PLANET AUDIO AC4000.1D ANARCHY Monoblock Class D Amp (4,000 Watts max, 1,500 Watts x 1 @ 4ohm )Class D monoblock 1ohm stable 100mV 2V or 2V 8V switchable input sensitivity 0deg 180deg switchable phase shift 0dB 18dB variable bass boost Continuously variable low pass crossover 15Hz 40Hz variable subsonic filter Low level inputs & outputs Power & protection LEDs Heavy duty set screw style terminals Chrome plated connections Illuminated logo Signal to noise ratio: 105dB Freq resp: 20Hz 250Hz Includes remote subwoofer level control Dim: 2. 25"H x