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AUDIO FORUMS >> Replacement Tubes >> what is that tube???
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Message started by michaelG on 05/13/23 at 15:59:20

Title: what is that tube???
Post by michaelG on 05/13/23 at 15:59:20

Hello,
I got this rectifier a long time ago (10+ years) with the maintenance of an amplifier. It was replacing a gz34 but I was never able to know exactly what it is.
any ideas?





Title: Re: what is that tube???
Post by Lon on 05/13/23 at 22:08:00

It looks like a Valvo or a Miniwatt GZ34 but those I've seen don't have a clear top.

Title: Re: what is that tube???
Post by michaelG on 05/13/23 at 22:19:20

Originally , I had two and the other one had a chrome top.
My daughter broke it, so that why this tube was not used until I got my ufo.
This one actually sounds very good.

Title: Re: what is that tube???
Post by Lon on 05/13/23 at 22:19:31

Wonder if it's a Mullard GZ32


Title: Re: what is that tube???
Post by michaelG on 05/13/23 at 22:21:36

indeed, it looks similar to this one
https://www.ebay.com/itm/266246519625?hash=item3dfd877b49:g:AgYAAOSw~B1kVOIO&amdata=enc%3AAQAIAAAA4NLB%2BpMcFTpzmEZGytxzZ%2BTr5K9tgbla7FGhUm1fNCDVYe%2FLVFyRxD%2FcwK67hwS0FkOmeNi5JIPMS6sWeUWOzkP%2BMVkNEhvO%2BtjOaLnYqv%2B02QRLeYNwIZpvXuvT7XMLX%2FQ7nOxnSaydoKfdY8duKk2PLiIAakQRa74ZvWJxbb44uapDCD3o5OZ2VOmTAjLbsLRTc82v9oz4Ds1TOVimUpfo4VpaPi%2F9p0ain%2B7fGj0td2oxhsvc0ajuwzwXl58w7oKhv5Il4%2FfXNUkyjPtDXH2urGYGAGqxXAN4JFdTmlsM%7Ctkp%3ABFBMyp_j74Ji

Title: Re: what is that tube???
Post by Lon on 05/13/23 at 22:26:02

Yes, you may have found it. I would not be surprised that it sounds very good.

Title: Re: what is that tube???
Post by michaelG on 05/13/23 at 22:30:11

Thank you so much !

Those tube were pretty cheap back then I also have a silvania 6sn7 gtb ( with the green letters) that I got for almost nothing 10 years ago. It sound great on the ufo.
correction: they are sylvania 6sn7 gtA

Title: Re: what is that tube???
Post by Lon on 05/13/23 at 22:39:23

Yes, the days of cheap NOS tubes are pretty much gone. . . but the tubes remain great sounding choices.

Title: Re: what is that tube???
Post by Rivieraranch on 05/14/23 at 15:50:09

Whatever tubes are listed on eBay now are the dreks.

Title: Re: what is that tube???
Post by Lon on 05/14/23 at 15:57:26

Personally I have not found that to be universally true. You pay for good ones of the most common types though. And if you look beyond the most popular types there are great tubes out there.

For example the 12AU7 Variant 6085 sounds fantastic with adaptors in the ZTPRE, and the 7062 variant of the 12AT7 is amazing in the ZROCK2. And both are 10,000 plus hour tubes and are cheaper than CRYOTONE tubes.

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