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Re: Exactly what is "proper cryo"

I mean 'proper' by freezing to absolute zero not -30 like the post originator suggests . Freezing to -30 just makes whatever is frozen cold ! I agree there is a huge difference between belief and fact , what was suggested was a repeatable scientific method of testing before and after cryo freezing using a valve tester and FFT for measuring distortion . It is obvious that users of cryo'd valves have absolutely no way of A-B testing hence the recommendation of electrical testing before and after . I'm reluctant to admit that I'd like to try cryo'd valves but no-where in the UK offers cryo services , I have over 5000 valves to play with so the risk on my part is minimal



...FB


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