• Eliminates ground loop noise between the audio source and radio. For use with audio devices have 4-Channel RCA audio outputs, including pre-amp outputs.
• Made from High Fidelity Permalloy Transformers to minimize signal loss, unlike other old ground loop isolators with HUGE DISTORTION under 100Hz. 
• Close to perfect response of +/- .03 db from 2 to 20,000Hz.
• Super compact design for easy installation in tight space. 
• Split pin RCA connector with pure Oxygen Free Copper spiral shielding wire.