Package: Crunch PZX900.4 900 Watt 4 Channel Powerful Car Amplifier + Rockville RWK81 8 Gauge 2 Channel Complete Wire Kit With RCA Cable Package Includes: (1) Crunch PZX900.4 900 Watt 4 Channel Great Sounding Car Audio Amplifier. (1)Rockville RWK81 8 Gauge 2 Channel Complete Car Amplifier Installation Kit With a Set of 100% Twisted Pair of 100% Copper RCA Cable. Features: Crunch PZX900.4 900 Watt 4 Channel Powerful Car Amplifier. 4-Channel Powerzone Series Class AB Car Amplifier. Max Power Rating: 4 ohms: 115 watts x 4 chan. 2 ohms: 225 watts x 4 chan. Bridged, 4 ohms: 450 watts x 2 chan. Max power output: 900 watts. SEPP (Single Ended Push Pull) A/B Class Amplifier Designs. Rugged Pulse Width Modulated MOSFET power supply. Silver-plated RCA level inputs. Silver-plated screw terminals. 4, 3 or 2 channel operation. Speaker-level (high-level) inputs. LED power (green) and protect (red) indicators. 1 Pair Preamp RCA outputs to daisy chain multiple amps. Heavy duty aluminum alloy heat-sink for extreme heat dissipation. 3-way protection circuitry (thermal, overload, and speaker short protection). Input sensitivity: 200mV - 5V. Frequency Response: 10 - 45,000 Hz. Total Harmonic Distortion (THD): &lt;0.05%. Signal to Noise Ration: &gt;90 dB. Selectable crossover modes: FULL / LPF / HPF. Variable low-pass filter: 30 - 250 Hz. Variable high-pass filter: 60 - 1,200 Hz. Variable Bass Boost: 0 to +9 dB bass boost at 45 Hz. Fuse Rating: 30A x1. 4 - 8 Gauge power and ground wiring is recommended for installation. 2 Ohms Min Unbridged Impedance. 4 Ohms Min Bridged Impedance. 0 - 9 Bass Boost. Not CEA-2006 Compliant. Dimensions: 10.24"L x 9.29"W x 2.17"H. Rockville RWK81 8 Gauge 2 Channel Car Amplifier Wiring Installation Kit. (1) 17 High Grade Twisted Pair of 100% Copper RCA Cable. 17 8 Gauge Translucent Blue SuperFlex Power Cables. 17 18 Gauge Blue Remote Cable. 17 16 Gauge Clear Speaker Wire. 3 8 Gauge SuperFlex Ground Wire. Gold Plated AGU Heat Resistant Fuse Holder. 60 Amp AGU Gold Plated Fuse. 7 Split Tube Loom. Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets.