Electro-Harmonix HUM DEBUGGER Hum EliminatorNot a noise gate, and not a noise suppressor but a real hum extractor. Every musician battles hum in their signal chain. The Electro Harmonix Hum Debugger Hum Eliminator turns it into dead silence, courtesy of a little Electro Harmonix magic. No matter what type of pickups you use or how loud you play, the Hum Debugger will clean up your signal chain so that hum will no longer overtake your guitar signal. Simply connect the Hum Debugger to your guitar