Its a HUGE hum the goes away when i touch metal parts and only occurs when any one of the several dimmers is on in the house even if its up full!
Its not there on any of my fully active basses with active pups and preamp, i.e. Status jazzbastard, and streamer, but the basses with passive pups and a pre amp its really bad on, ie my ray and my KSD, its there but not too bad on my squier VM.
Sounds like earth hum but is a pain in the ass!
I tried the belkin pure av from work and it did nothing at all, gutted!