hospital grade or commercial grade receptacles ?

No. I've never used Raul.

By the way, Hdm, I really didn't answer you properly last night. The "$50 multimeter" was for verifying that the resistance of properly functioning conventional power cords and outlets are essentially zero. My comment that a more sophisticated instrument would be necessary for determining the improvement due to cryogenics was because I believe whatever improvement there might be will be below the resolution of a typical multimeter, and that's because the resistance of the cord or outlet starts out so low to begin with. I'm sorry my statements appeared contradictory, but I think they are relatively clear if you read closely, rather than just be poised and ready to attack. Are we really supposed to believe that differences in current of far less than 1% make a difference? Never mind, that's a rhetorical question.

Boa2, to answer your last question first, I am having fun, but I'm not looking for a fight. Not one bit. I just like a debate, perhaps too much. The reason I answered Saki70 had nothing to do with hospital-grade outlets, it was because some people were saying that outlets sound significantly different, so I asked why. I also gave my opinions that there were no differences, and that the reason there were no differences was because there were no measurable differences. While I haven't A/B'd outlets, I have done so for power cords, heard no difference (of course I didn't expect to - is that a problem?), and postulated that if power cords made no difference certainly outlets wouldn't. The conversation went downhill from there.

Doesn't "the community" allow a diversity of opinions? Or is that diversity only allowed to fall into the very narrow range of people that are willing to wish differences into existence?

The community has no problem with debate, but it tends not to like dogmatism. Irv you still haven't answered by 'sciencentific proof' questions.

Albert, I will think of you every time I look at a picture of a TI product. I am very sorry that you view this discussion as an attack.

There is a person I've seen newsgroup postings from that has a really cool quote in his sig. It says "music is art, audio is engineering". I often don't agree with that person, but you can't argue with that sig quote.

And by the way, Albert, not only do you need a lesson in physics, but in reading. I never said I had a degree in physics, I suggested that someone in this thread get one. Was that you? I can't remember. The suggestion still stands... of course, alas, that may not help. If I remember correctly, the seminal work in the speaker-cables-sound-different field was done in Stereophile by Dick Olsher, and I think he is/was a physicist at Los Alamos. In your case I just happen to think a little knowledge might make you more open-minded.