AC grounding

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.

Yep,Mr. Corn fed is right.Only use a cheater if it reduces hum.This will usually be on the amp.ONLY.---No other cheaters need apply.If you get a large static shock from the carpet when touching the amp.,on a low humid.day don't do the cheater on the amp,try a different component.Your amp is telling you something,(ground me)- a tiny static is ok.

It must be true in that my new Krell HTS (pre/proc) clearly states "Do not remove or bypass the ground pin on the end of the power cord. This could cause radio frequency interference to be introduced into your playback system". My new Krell KAV250a (amp) does not state anything like that.