Filter noise to restore sound quality.Common ground isolation module eliminates current noise Effectively 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 audio equipment, to the co-location of vehicle-mounted equipment. Noise, enjoy 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 be different, which does not affect use) Name: Audio Isolator Interface: interface Line length: 12CM Function: noise, current and sound Colour:As Shown Material:PVC Package Contents: 1 x Audio Isolator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.