EFX Monoblock Class D Car Amplifier RMS Power Rating: 4 ohms: 350 watts x 1 chan. 2 ohms: 500 watts x 1 chan. 1 ohm: 1000 watts x 1 chan. Max power output: 1000 watts MOSFET switching transistors power supply Low noise circuitry Bass Remote Details (remote level control sold separately) LED power and protect indicators Bass Boost (0-12 dB bass boost at 45 Hz) Strapable (hook multiple 1000c1 amplifiers together to increase power) Soft start turn on/off Mono channel operation Illuminated logo badge Line level and speaker-level inputs with signal sensing for automatic turn-on Preamp RCA outputs loop through 5-Way System Protection circuitry (thermal, overload, speaker short protection, impedance, and reverse polarity) Heavy duty brushed aluminum alloy heatsink and top plate for extreme heat dissipation Sturdy aluminum side panels Silver-plated RCA level inputs Silver-plated screw terminals Variable low-pass filter (40-200 Hz, 18 dB/octave) Subsonic Filter (24 dB at 15 Hz) CEA-2006 compliant amplifier Frequency response: 20-20,000 Hz Dimensions: 13-1/4"L x 10-1/2"W x 2-3/8"H 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.