Cryogenics: accomplish what and work how?


Cryogenics: what is it supposed to accomplish and how does it work?

I’ve heard about this numerous times and I don’t know how it is supposed to work. Is a cable or tube frozen? To what temperature? Are they heated first? What is the procedure? What is the purpose? What physical change brought about by the cryogenic treatment and how does that effect the sound?
dacat
The points made in the Jena Labs document is exactly why Purist Audio has a contract with NASA to treat it's products. NASA has mainframe computer controlled immersion tanks that are more precise than what is typically available for commercial use.

Much of what is sent into space is cryo treated to improve stability and reduce the effect of stress. When the tanks are not being used for NASA projects they are available to Jim. This is the reason that his product is sometime easy to get and sometime back ordered severely.
I've used cryo cables and found little difference. Keep in mind, it is difficult to compare the same cable cryo vs non-cryo. Either a manufacturer does cryo right, or not at all. So an apples to apples comparison is nearly impossible. That said, you should take my "little difference" with a grain of salt. However, I have tried the same tubes (NOS) cryo and non-cryo. There is a substantial difference here. Lower noise floor and I believe longer tube life (but really can't be sure). I can say I was impressed with the dramatical difference. Tubes are such sensitive devices that it does make logical and physical sense that cryo treating would have a beneficial effect.
thanks. i'm going to take these answers down to the materials science lab in the office below mine and see what they say. most of their work is in alloy extrusion. they may be able to treat some cables for me so i can make a direct comparision. i'll let you know what i hear.

/d
I can understand the changes to the wire portion of the cables. Should I assume that an already manufactured cable (with insulation and jacket) cannot be treated?

I don't understand who cryogenics can improve a CD at all, since there are "one pits" and "zero pits" on the disk, how can it improve these pits?