Hmmm, so now all of the psuedo-experts and engineers come out. Guys, by all means believe what you want to believe. By all means discount physics and electromagnetic theory.
Stanwal - I never claimed that I hadn't tried ever tried changing an outlet. Nor had I claimed that there could not be an improvement by do so. What I DID claim is that I don't believe that, in and of itself (and barring some major issue with the power delivery in an average home, which should be addressed at the source of the problem), changing an outlet will make a substantial difference in the sonic signature of an amplifier (or any other piece of analog and/or digital) audio gear.
Jea48 - Interesting article. It starts out with some good factual information, then concludes with some personal examples and advice which has little or no correlation with the factual information.
Bob_bundus - 'nuff said.
One last word: if "hospital grade outlets" are so important, why doesn't any high-end audio equipment manufacturer recommend this necessary upgrade? If super-expensive rooty-tooty power cords are so necessary, please advise me of which high-end audio equipment manufacturers design, build, sell and/or recommend this essential part? Can you explain why CJ, or ARC, or Krell, or McIntosh amongst others would both compromise their expensive systems and leave money on the table?