Features: Isolate and eliminate noise caused by a ground loop in an audio circuit with this Four-Channel Ground Loop Isolator. The isolator ensures that the shield ground on each audio cable is isolated from any equipment ground, which could cause audible noise when amplified. This device has four channels, composed of two pairs of stereo (L+R) inputs and outputs. The nominal DC impedance of the device is 100 ohms and the audio impedance is 3500 ohms at 1000 Hz. The nominal input power is 50 watts, with a maximum power level of 100 watts. Specification: Type: Noise Sound Eliminator Connectors: 4x RCA male, 4x RCA female Rated input: 50W Maximum input: 100W Function: Eliminates ground loop noise between the audio source and the amplifier. Place between the head unit and the amplifier or EQ. Material: Plastic and copper core Color: Blue and transparent Package Contents: 1 x Noise Sound Eliminator Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement may vary by +/- 1-3 cm.