Easy to use: Plug and Play, no complicated setup required. Simply connect the ground loop isolator between devices with 3pin XLR input and output. Purpose and effect: Reduces current noise caused by grounding differences to deliver clearer voice and music in car speakers and home audio systems. Compatibility: Works with any portable device that has 3pin XLR input and output. Suitable for car audio systems and home audio where grounding issues remain. Performance note: Designed to suppress hum and buzz without altering the core signal, improving overall audio clarity in systems affected by grounding problems. Use scenarios: In a car audio setup: Connect a 3pin XLR source to the car audio system to remove ground loop noise and improve clarity while driving. In a home audio setup: Place the isolator between a mixer or portable audio source and home speakers or an amplifier to reduce hum in the listening room. In portable or recording applications: Use between a portable XLR device and recording equipment to prevent ground loop noise during field or onlocation work.