Every musician battles hum in their signal chain.  The Hum Debugger turns it into dead silence, courtesy of a little EHX magic. Not a noise gate, and not a noise suppressor -- but a real hum extractor.  Silence is golden!

Features

• True bypass
• Absolutely eliminates hum from any audio source
• Tough and compact die-cast chassis
• 7.5AC-400 power supply included
• Dimensions in inches: 4.0 (w) x 4.75 (l) x 2.25 (h)
• Dimensions in mm: 102 (w) x 121 (l) x 59 (h)

https://youtu.be/VbdtS_SNqvY?list=PLD7F7D389EB231B2B

Item shown: Electro-Harmonix Hum Debugger / Hum Eliminator
Model #: HUMDEBUGGER
UPC: 683274010625