American Bass Ph1600md 1600w Class D Monoblock Amplifier Amp 3200 Watt VARIABLE SUBSONIC FILTER VARIABLE BASS BOOST FREQ. RESPONSE: 10Hz-220Hz 4-WAY PROTECTION (THERMAL, VOLTAGE, SPEAKER SHORT AND DC) 5 1/2"W X 2 1/8"H X 7 1/4"L