That may be the key here, Charles. It is all the matter of point of reference. I did not design Japanese receivers... but I spent over 20 years designing super-sensitive world-leading instrumentation that dealt with femtoamps and nanovolts, and at one point was considered a go-to guy in one of HP divisions on subjects of RFI, EMI and ESD. This is not meant to browbeat anyone, but I have had enough of that nonsense. I am truly sorry to see you thrown your hat into this, and I am done with it.
BTW, those Japanese designer, unlike some here, know full well they would be far better off with a three-conductor power cords, but they compete on cost alone. That they managed to achieve pretty good results with super-low-cost solution is great credit to them. But they would have done even better with the "right" configuration.
