I first tried the PS Audio PowerPort - Big mistake! or should I say that it depends if you like a bold, in-your-face sound (from the nickel?). I now have the cryoed Hubbell 5362 from AudioExcellenceAZ. Much better than the PS Audio, but I question how much I would have noticed if I had gone from my conventional wall outlet to the cryo, instead of going from the PS Audio. Jury is out, but I'm not hearing a lot of difference. Could cryo outlets be snake oil?