Stinger SK4641 4 Gauge 4000 Series Car Audio Amplifier Installation Kit 4 Gauge 4000 Series Power & Signal Amplifier Wiring Kit Designed specifically for car audio systems up to 1500 watts Premium power and ground wire provides optimal power transfer Made from 100% oxygen-free copper for a pure uninterrupted transfer of power Includes 2-channel RCA interconnect cables for the audio signal connection from the receiver to the amplifier