A ground loop is different — it occurs when there is more than one ground path between two items of equipment. Usually, one path is the screen of an audio cable connecting the two pieces of equipment and the other path is via their chassis safety earths in the mains plugs. Ground Loop Eliminator for AC Electrical Lines. Eliminate The Hum - Not Your Sound! Exterminate hum with the Hum X! This handy tool filters out unwanted voltage and current in the ground line, which can cause ground-loop hum, while simultaneously maintaining a solid, safe ground.
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