this represents a crude form of "star grounding," which i believe is dangerous. it won't work at all unless the electronics terminated into cheaters are grounded to the piece (usually the pre) terminated into a 3-prong outlet, w/ ground.
AC grounding
I've been told recently that all my gear with the exception of one needs to have a cheater plug on them. That all I need is one power cord grounded. I am not experiencing any problems, just would like it to be right. Can anybody with experience in this matter please post their input. Thanks