Stinger SK4681 8 Gauge 4000 Series Power and Signal Amplifier Installation Kit 8 Gauge 4000 Series Power & Signal Amplifier Wiring Kit Designed specifically for car audio systems up to 400 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