1600W Max @ 1 Ohm60 Amp External Fuse Required (Not Included)Optional Remote Bass Knob:Phremote1 (3.5Mm Plug)Class D Mono Block Amplifier1 Ohm StableVariable Low Pass FilterVariable Subsonic FilterVariable Bass BoostFreq. Response: 10Hz-220Hz4-Way Protection (Thermal, Voltage, Speaker Short And Dc)5 1/2"W X 2 1/8"H X 7 1/4"L