Check the listing for details. Used Electro-Harmonix EHX XO Hum Debugger Hum Eliminator Guitar Effects Pedal. Condition: Used. Listed at 129.99 USD. Used Electro-Harmonix XO Hum-Debugger Hum Eliminator Guitar Effects Pedal. Mint, with all original packaging! Orders placed before 12:00 PM Eastern Standard Time will ship same day! Orders placed after 12:00 will often ship same day as well, if not, they will ship next day. International orders: Please note that you will be responsible for any applicable customs fees or import taxes! Check my feedback and bid with confidence! 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. Quick Specs True bypass Absolutely eliminates hum from any audio source Tough and compact die-cast chassis 7.5AC-400 power supply included