Package: Kicker 43CXA12001 1200 Watt RMS Mono Class D Car Audio Amplifier With 3-Way Protection + Rockville RWK4CU 100% Copper Full-Spec 4 AWG Complete Car Amplifier Installation Kit 1200 Watt RMS Mono Class D Car Stereo Amplifier. RMS Power @ 2 Ohms 1200 Watts x 1 Channel. RMS Power @ 4 Ohms 600 Watts x 1 Channel. Input Sensitivity Selector: high level 250mV-10V, low level 125mV-5V. Frequency Response 25 to 200 Hz. LED power (green) and protect (red) indicators. 3-way protection circuitry (thermal, overload, and speaker short protection). Dual speaker terminals simplify the hookup of multiple speakers. Soft start turn-on. Pulse Width Modulated MOSFET power supply. Signal-to-Noise Ratio (SNR): 95 dB. Subsonic Filter: 24dB/octave high-pass fixed @ 25Hz. Active Crossover: 12dB/octave, variable 50-200Hz, low pass only. KickEQ Boost: variable to +12dB, centered @ 40Hz. CXRC wired remote bass level control sold separately. Dimensions (HxWxD): 2 3/8" x 7 3/16" x 12 1/16" 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. Strand Count: 1862. BC-5W2 Compliant The speaker cable included in the Rockville True-Spec is also manufactured from 100% copper and woven in to a flat planner design and coated in our Super-Flex insulation so that it fits under and around your vehicles trim and carpet smoothly and without bulking up. With crystal clear sound quality these speaker cables deliver true audio fidelity from your car audio amplifier to your speakers.