TAD 5AR4 cryo treated rectifier tube

Hey all,

Anybody try these tube amp doctor GZ34's in their amp yet?

I was wondering how they sound. So they've got a nice look, and if anybody's had good experience with them, I may give them a shot

Great thanks,
I actually have some valve art (which I believe are also the same) el34's that I've been impressed with.
I suppose I'll pick one up in case my RCA rectifier burns out

Doesn't the cryo treatment add quite a premium to the price tag?

I guess the fantasy is that things brought back from cryogenic freezing shall have a renewed lease on life, whether animate or, now with tubes, inanimate.

Seriously, I'd be interested to know if any of our forum members have tried and heard a difference.

Ditto - all Im concerned with is if there's any tangible audible difference

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A signal tube, as in the 12DW7, is quite a different story than a rectifier when it comes to an audible difference.
If you want to pay more for a cryo rectifier go ahead- paying more makes things sound better.
If these were guitar amplifiers we're talking about it would be a different story. Rectifiers can make more of a difference with an amplifier that's being pushed hard.

I tried one, It was not cyro treated. but I put it in an amp that had a problem. The tube plates turned red and it burned out. It was dead even on the tube tester. So I just put it aside and about a year later I tried the tube in another amp and it has been working for about 3 months now. I'm not sure you will hear much diffrence in the sound by changing the rectifire tube.

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Peter,
I more than likely will, but What blitzen was saying about rectifiers making more of a difference at higher output levels make sense. I have a NOS RCA 5ar4 as well as a new JJ Tesla, and I can't distinguish between the two in comparisons. Then again, I think my Valve Art EL-34's sound as good as my vintage Telefunken EL-34's...either my ear isn't as refined as other people's, or too many loud concerts in the past have left me with less than optimal hearing. Nevertheless, I'll experiment and let you guys know - after all, I'll get bored if I can't fiddle with my audio equipment. There's always something else to try.