Bingo! By George you are getting it. First Shunyata is a scamming, lying, fraudulent, snake oil company that loves to rip off unsuspecting audio enthusiasts. So if anyone from that company says anything they are lying.I really wanted to believe in this product and the virtues of "clean power". But I haven't found a good refutation anywhere to the basic argument here, which is that the conversion to DC basically cleans up any noise in the AC signal. The closest was an article I think by a Shunyata person that says that a good power cable can somehow help prevent a power supply on the user-end side from introducing noise back into the electrical system at large. Although even if that's true, it shouldn't matter right if the ultimate end unit is converting the signal to DC?
I don't think PS Audio is selling snake oil in the sense that they don't believe what they're doing. I think the power plant does what it says it does. Just doesn't have an impact on audio quality (for me anyway).
I also agree with you on the PS Audio power supply regenerators. They do what they say they do BUT, it has no effect on the audio sound coming out of your speakers. Paul makes a lot of items that are questionable when tested. They are not bad, but they are not usually state of the art when tested. So, he gives you a decent product for an expensive price. A snake oil fraudulent company like Shunyata gives you plain jane stuff along with pure garbage for extreme prices. Mostly Shunyata stuff is junk and does not do what it claims to do.