SK6641 by STINGER STINGER (SK6641) 4 GAUGE 6000 SERIES COMPLETE AMPLIFIER INSTALLATION KIT 4 Gauge 6000 Series Power 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 6000 Series shielded RCA audio interconnect cables for increased noise rejection