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This Electro Harmonix Humdebugger Hum Eliminator is in excellent condition and comes with the box and power supply.
The Hum Debugger from Electro-Harmonix acts as a ground loop hum eliminator, and not as a noise gate or suppressor. It is an ideal solution for the guitarist or bassist plugging into non-ideal domestic power. The Hum Debugger uses a proprietary power supply, which is included with the pedal.