The Premier Power Plant is one of great value products PS Audio has produced, especially among its peerless power regeneration units. $2195 was a breakthrough price when new, and its pricing on the resale market makes this a no-brainer entry or upgrade in power conditioning.
I invite you to find and read the entire review by Robert Deutsch in the February 2009 Stereophile. Here are two paragraphs:
"I've never used the expression jaw-dropping in print or in conversation, and I'm not going to start now. My jaw remained in its usual place. But I was surprised by the magnitude of improvement produced by the Premier. The music became more subtly detailed, the soundstage wider and deeper, the overall sound more natural, less electronic. Noise, which can be a problem with the 105dB-sensitive Avantgarde Uno Nanos, was already quite low with the system plugged into the wall; with the Premier, it was even lower. There was no impairment of dynamics; if anything, if was now easier to hear the music's ebb and flow.
"Using the Premier to feed my system its power simply resulted in a superior listening experience, an impression that persisted through repeated switchings back and forth between raw AC and the Premier's regenerated AC."
This unit performs flawlessly. I've rated it 7/10 based on Audiogon cosmetic guidance. There are small fingernail size and depth marks on the bottom front corners of the faceplate, a side affect of sitting on the bottom shelf of the rack. It also has some small spots of discoloration on the top cover, a quirk of the unit that other owners have noted. They aren't oily marks or fingerprints--just slight discoloration. It's not noticeable unless you are standing over it with light shining on it.
This was my first power conditioner, and I have to agree with this and other reviews. The change is not subtle. I'm happy to be upgrading after all these years.
This is a heavy piece of gear and large, sturdy double-boxed package. Actual shipping costs are more than $70.
Thanks for looking.