Hang on Audiofeil, you've just stated my comments are erroneous but then pointed me back to your previous post which is just assumptions - unless you're a component designer for an established brand, that is.
I'll back my statement up with some evidence...
Cambridge Audio, for example, supply all their components with a standard power cord, yet make a point of NOT including interconnects. That clearly means they have no issue with a standard PC, but know buyers will want to select their own IC.
Now an assumption of my own; I believe that if you were able to look inside most hifi R&D test rooms, every component being tested (and every piece of test equipment too) would be powered by standard good quality 3 pin PC's, not fancy expensive aftermarket PC's.
I know from personal experience that the PC's on recording studio equipment (even in major studios) are all standard off-the-shelf cords; I think these folks might know a little about what affects sound balance.
In fact, if I was a component manufacturer, I'd be embarrased to think my equipment's power supply and components were so fickle that changing a PC could affect it's sound.
True I'm no EE, but there's still room for common sense in audio isn't there?