Ground Loop Isolator RCA Input & Output Eliminate unwanted noise and interference from your audio system with the Cerwin-Vega CHGLIRCA Ground Loop Isolator with RCA Input & Output. Designed for car audio enthusiasts and installers, this RCA ground loop isolator helps remove annoying humming, buzzing, and engine noise that can occur when connecting multiple audio components in a vehicle. Ground loop noise is a common issue in car audio systems, especially when amplifiers, processors, or aftermark
