PS Audio Power Plants

@hifiman5 Well, there’s another part to this story. I ordered the P5 a couple of months ago, directly from PS Audio. There was a delay of a few weeks before it was shipped. While I was waiting, I stumbled over the fact that the P10 and P5 were being discontinued, and replaced with new models that were supposedly much better and also a good deal more expensive. Also that current models couldn’t be upgraded. Further looking revealed that P5’s were unavailable (sold out/discontinued) just about everywhere, and that stores were selling their remaining P10’s at significantly reduced prices. I must have been one of the last people to whom PS A sold a P5 before they too ran out of units. Frankly, I was a bit miffed at paying full price. Unless the unit had done exactly what I wanted it to do*, it was going to go back. Otherwise, I would definitely have contacted them and got their take on the situation with the "whine".

* Explanation: my Rogue CMII integrated has some low-level hum *both* from the transformers and through the speakers. Together, the three sources can be heard from the listening chair when the music falls to silence. I’ve worked through a whole hassle of checking wiring, home remedies, disconnecting everything, various power conditioners, etc. etc., without any of them making a dent in the hum. Perhaps I’ll start a separate thread on it one day--too many things to list here. Level of hum is perhaps not enough to annoy many people, but it brings out my OCD.

P.S. For the record, units from Isotek, iFi, Audioquest, Furman, PS Audio, Blue Circle, Granite Audio, Audio by Van Alstine, Ebtech, have all passed through my listening room.  The people at FedEx are beginning to recognize me...

Sigmas EVO3.

BTW, it's definitely, absolutely not either DC on the line or a ground loop.  I've also had every breaker in the house turned off save the one controlling the receptacle the CMII was plugged into.  Rogue asked about the sensitivity of my speakers (average: PMC twenty.24).  But the fact that the transformers also hum tells me it's not just a possible mismatch issue.