Filter Noise To Restore Sound Quality.common Ground Isolation Module Eliminates Current Noise Effectively Eliminate The Current Sound Generated In Common Ground Realize Signal Mission, Remove The Noise Generated By Connection, And Solve The Ac Sound Damage Caused By Site Interference And Other Reasons Isolate The Potential Difference Between The Two Systems To Prevent The Input Of Excessive Potential Difference To The Equipment Vehicle Connection Used With Rca Audio Equipment, To Eliminate The Co-location Of Vehicle-mounted Equipment. Noise, Enjoy Pure Sound Quality Power Amplifier Connected To Tv Remove The Noise/current Sound, Restore The Real Dubbing, Experience The Ups And Downs Of The Plot, And Have Good Audio-visual Effect (due To Different Batches, The Printed Words On The Product Will Be Different, Which Does Not Affect Use) Name: Audio Isolator Interface: Rca Interface Line Length: 12cm Function: Eliminate Noise, Current And Sound Colour:as Shown Material:alloy+pvc Package Contents: 1 X Audio