Kicker 47KMI3 Marine Series 2-Ch Rca Interconnect, 3.0mStrong Signal Split-pin connections ensure an excellent union between the cable and amplifier input, while pure OFC (oxygen-free cable) wire delivers the highest signal clarity. The PVC jacketing is extended to completely cover the ground ring, providing a superior seal between the elements and your amplifier. All marine RCA cables feature an ultra-slim union for snag-free cable routing in tight places.