Kicker KXMARLC 4-zone audio distribution system for boats and RVsSpread the music throughout your boat or RV If you're serious about having music going in every nook and cranny of your water toy or land yacht, Kicker's KXMARLC provides volume controls for up to four zones of audio. Plug in a source, and you can feed the signal to any amplifier. Its four control dials let you choose the perfect volume for each zone. This system's built in line driver also ensures that you'll send ultra clean signals (up to 8 volts)