Amp/Preamp Asylum

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RE: Audio Research LS-27 preamp tube replacement

Posted by airtime on February 26, 2017 at 12:01:53:
I know others will argue but sometimes small tubes do fade out slowly. A few months ago I would have been one of those arguing just that point, until it happened to me! I think hard driving tubes just start getting noisy. But some of them can start loosing their "zip".

It can't hurt to try a fresh set. If nothing else comes of it than at least you have a spare set sitting around.

I found in my preamp when I used EH 6922s they would dull out and then go noisy in a few months. I switched to Gold Lion 6922s and they seem to be going strong, and zippy, for three times the life I had with the EH tubes.

I would still contact Jim. Knows his tubes, his stereos and as honest as they get.