iPod Direct Stereo (Left/Right) Audio Input - Breaks Ground Loops to Eliminate Engine Interference..RCA Male Stereo (Left/Right) Audio Output - Designed for use with Ipod to devices with RCA Stereo Aux input.6 Volt Audio Line Driver.Wide Input Signal Range 50mv-6v.Designed to filter out engine noise emitted from devices while on charge Eliminate the electrical noise and hum caused by ground loops with this ground loop isolator. These problems typically occur when multiple components receive power from different locations. This isolator solves that problem by providing ground path isolation between components while maintaining full frequency response. This device is designed to work with an iPod with a dock connector. It provides an iPod to male stereo RCA jack setup.