Product Details: Belva BB Series Class-D 1-Ohm Stable Monoblock Amplifier RMS Power Rating: 4 ohms: 540 watts x 1 chan. 2 ohms: 900 watts x 1 chan. 1 ohm: 1200 watts x 1 chan. Max power output: 2000 watts Pulse Width Modulated MOSFET power supply Wired remote bass level control included LED power (green) and protect (red) indicators Soft start turn-on Preamp RCA outputs to daisy chain multiple amps 3-way protection circuitry (thermal, overload, and speaker short protection) Dual speaker terminals simplify the hookup of multiple speakers Heavy duty aluminum alloy heat-sink Input sensitivity: 100mV-6mV Frequency response: 20-30,000 Hz Variable low-pass filter: 40 - 180 Hz Subsonic filter: Off - 50 Hz Variable Bass Boost: 0 to +12 dB bass boost at 30 - 80 Hz Fuse Rating: 40 A x 3 4 gauge power and ground wiring is recommended for installation Dimensions: 12-1/2"W x 8-1/4"D x 2-1/4"H