For sale I have a brand new Monoprice 106909 Four Channel Ground Loop Isolator.

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

Thanks for looking!