Oh my, yes. This is what I registered here to ask about. It is very inconvenient to have to run a second power adapter from my pedal board just to satisfy the voice box’s finickiness. The adapter says 9.6v, but is the same amperage as my standard Boss style adapters and actually has printed on it that it is a replacement. The hum in the guitar amp is quite annoying and present when the VB is plugged into a different power supply, or is daisy chained with other pedals using the VB’s own PS. I have also noticed that at some clubs, the hum is awful even when using the VB with its own PS by itself. It has all the symptoms of a ground loop, but no lift on the unit. Does anyone have any ideas on how to deal with this live?