Hey Mike;
I was surfin the net on what diferences there is between balanced and unbalanced wiring. The balanced has a hot a cold and a ground. You only hook up one end. It shows not to connect to grounded equipment where other equipment is grounded to it through lets say a sheild. I see that the big problem can be what they call a ground loop. Having too many grounds creates an antena. But if you hook them up right, they act as two noisey signals that run at 180 degrees appart so it cancels each others noise out. The extra ground line in a power line, I'm not sure if this would act as a drain, I think it's a good question though. My brother Sparky in VT had recently installed 12/2 M/C armored cable in a hand radio room hoping that this armor would act as a sheild against RFI. This subject gets so deep. I see you went the extra mile on your studio, nice job and good luck.
~Ange
