Package: Kicker KX1200.1 1200 Watt RMS (2400 Watt Peak) Mono Block Class D Car Amplifier + Rockville RWK4CU 100% Copper Full-Spec 4 AWG Complete Car Amplifier Installation Kit Kicker KX1200.1 KX 1200 Watt RMS Mono Block Class D Car Audio Amplifier. 2400 Watts Peak/1200 Watts RMS. 1200 Watts RMS x 1 @ 2 Ohms. 600 Watts RMS x 1 @ 4 Ohms. Workhorse power and performance from proven technologies. Signature compact footprint for space-challenged installs. High-efficiency Class-D design in multi-channel and stereo amps. Class-D models with boost converter in mono amps provide 80-percentefficiency Features FIT (Fail-Safe Integration Technology) to accept output from virtually any source. FITs lab-grade, balanced differential inputs offer best possible noiserejection. Double-sided fiberglass circuit board. Built-in crossovers and adjustable KickEQ for dialing it in. DC offset or 12v remote auto turn-on modes. Angled custom-tooled power connectors. Looks great with magnetic panels covering controls and glass-fibercomposite end panels High-efficiency regulated MOSFET power supply. Wired remote bass level control included. Variable Bass Boost (0-18 dB Selectable 20-80 Hz). Soft start turn-on. Preamp RCA outputs to daisy chain multiple amps. Dual speaker terminals simplify the hookup of multiple speakers. Heavy duty aluminum alloy heat-sink. Variable low-pass filter (40-160 Hz, 24 dB/octave). Variable sub-sonic filter (10-80 Hz, 24 dB/octave) Frequency Response (Hz): 10-160, +0/-1dB. Input Sensitivity: high level 250mV-10V,low level 125mV-5V. Signal-to-Noise Ratio: &gt;95dB, a-weighted, re: rated power. Active Crossover: 24dB/octave, variable 40-160Hz, low pass only; Subsonic Filter: 24dB/octave high-pass variable 10-80Hz. KickEQ Boost: variable to +18dB, centered 20-80Hz, variable Q1-5 Rockville RWK4CU 4 Gauge 2 Channel Complete Car Amplifier Installation Kit 100% Pure Copper RCA Cables. 4 Gauge Power Amplifier Installation Kit. Designed specifically for car audio systems over 1000 watts RMS to 2000 Watts. Made from silver-tinned 100% virgin copper for a pure uninterrupted transfer of power and signal. The solid brass gold plated Mini ANL Fuse Holder offers ideal protection for high powered systems