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Re: Cryogenic treatment

209.20.170.10

We've cryo'd a pair of permalloy core line level output transformers, and there was an audible improvement over a pair of stock units. In this case the approach was fairly reasonable, because the lamination stack could be stressed slightly when being put in the channel frame or under the keepers or bell ends, and permalloy's performance can be degraded slightly by such stress. The cryo treatment would theoretically relieve that stress, and potentially improve the sonics. Seemed to give a bit smoother presentation.

I bet some tubes could benefit from the treatment as well, as Pearl has offered in the past.

I don't know that the cryo treatment would hold up on, say, a cable that is being subjected to new stresses every time you hook it up. Seems like it would depend on how much it gets bent after treatment.

I'll be sending my new heavy barreled Mauser bolt action to the cryo shop real soon too...supposed to improve accuracy in some cases.

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