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A brand new Ground Zero bought a couple of months ago to fix a hum in my system. Soon after I bought it, I found the hum was caused by faulty grounding in the main panel in my house. Problem fixed by an electrician and the hum is gone. The unit was taken out of box but never used.
Ground Zero is used by professionals (see link) and has a superb reputation for eliminating the most difficult ground loops.
I will pay ground shipping. PayPal prefered.
Unit with all cables new in box as it ships from the manufecturer
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