This item is used but still in working condition. All you have to do is hook up the feed from my left and right rear speaker and connect RCA cables to your amp if you're using a stock radio system. The KICKER 46KISLOC2 is a 2 channel stereo line-output converter designed for car audio systems. With an RMS power output of 55W, it is capable of delivering clear and powerful sound for a superior listening experience. This unit is perfect for those looking to upgrade their car audio setup with a reliable and high-quality amplifier from a trusted brand like KICKER.