Kicker CK4 Complete 4 Gauge OFC CK-Series 2-Channel Amplifier Installation Kit Complete 4 Gauge OFC CK-Series 2-Channel Amplifier Installation Kit Designed specifically for car audio systems up to 1000 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