Where can I get my power cables cry'oed?

Sean, the place near Chicago you are likely looking for:

Controlled thermal Processing, Inc.
703 Rogers Street
Downers Grove, IL.

This is the company I was involved with in 1998, doing my (factory sanctioned) cryo experiments with Benz Micro cartridges. Having now done experiments with four different cryo facilities, NASA is absolutely the superior vendor

Their tanks are designed in compartments and computer controlled. The time and temperature of the treatment has evolved from need to treat the tiles on the nose of the shuttle, to door latches and electrical components.

Realize that everything NASA launches faces the extreme cold of outer space. They must pretest and treat all earth bound parts to avoid a catastrophe

The Hubbell outlets I offered were treated there, and as other items I have had done, the more absolute the treatment, the longer it requires before satisfaction with end results. My experience has been that the difference is worth the wait.

I do not have access to NASA, they are hundreds of miles South of me, I paid a contractor as a go between.

If that contact did not exist, I would try the place near Chicago. Address posted above here (12-15-02). Results from them was good, just had a bad experience as it was one of the two transformer experiments that took ETERNITY to break in.

Other than that, several people have mentioned Jena Labs, so I assume they are the "buzz" place of the moment. If they are immersion cryo, they are using the correct form of cryo.

As for sound, anything I have ever had cryo treated sounded worse than before, until break in period was complete.