If you want to charge your music device from your vehicle while using your intercom system, consider using our 9 Pin Molex Inline Ground Isolator. Audio chargers can introduce power noise into your intercom system, but this isolator can eliminate such issues. To avoid power noise while playing music, we recommend using our Line Driver for amplification rather than charging the device. However, if you must charge while playing, you have two options: purchase a ground isolator for the Line Driver, or use a battery-powered amplifier like Boostaroo, available on Amazon for about $50. While not as high-quality as our Line Driver, they use a battery instead of vehicle power, eliminating potential noise. Compatible with: PCI 4 Link Pro Elite PCI Trax Plus PCI Comlink X Elite
