Cryogenic Treatment of Tubes, and why you should not.

Machine Tool Cryogenic Treatment

This doesn’t prove anything about audio tubes, but I wouldn’t argue with the proven physics demonstrated in these other applications (above link)

I can certainly see why the more adventurous tube dealers would experiment with cryo. It may be an experiment paid for by the buyers, but the buyers are willing to be experimented with. It's an understandable urge. Some particular resolution of the question may one day rule, and it may have been hinted at by the machine tool manufacturers' experience.

Post gets deleted that explains Cryo. Wow what a dump... 

Saw that post before.

First you cryo the tube, then you heat it up again when using it. LOL! That's all I need to know. Kevin is an excellent sales person, for sure.

Re scientific testing, the null hypothesis is no difference: scientific methodology 101. For listening test, please point me to a published double blind study on the effect of cryo on sound. Personal anecdotes are just that, personal anecdotes, without any sci. credibility. Sorry!

@mulveling 

Same with me. I think I checked Cryo a couple times. But never did a comparison. Never replaced a tube and thought wow that is better and went back and figured out it way Cryo treated. So, I really have no idea. 

More with the double blind nonsense. Why do so many of you take shelter under such a flawed methodology?