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what is that tube??? (Read 2137 times)
michaelG
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what is that tube???
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?




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Lon
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Re: what is that tube???
Reply #1 - 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.
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HR-1,ZBIT,ZROCK2,SEWE300B,CSP3-25mod; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II, P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3; VooDoo:Cremona+Amati interconnects, IsoPods; headphones: Sennheiser HD800S,ZMF Ori,Oppo PM1
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michaelG
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Re: what is that tube???
Reply #2 - 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.
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Lon
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"Love without
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worthless!"
Philip K. Dick

Posts: 24143
Re: what is that tube???
Reply #3 - 05/13/23 at 22:19:31
 
Wonder if it's a Mullard GZ32

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HR-1,ZBIT,ZROCK2,SEWE300B,CSP3-25mod; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II, P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3; VooDoo:Cremona+Amati interconnects, IsoPods; headphones: Sennheiser HD800S,ZMF Ori,Oppo PM1
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michaelG
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Posts: 67
Re: what is that tube???
Reply #4 - 05/13/23 at 22:21:36
 
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Lon
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"Love without
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worthless!"
Philip K. Dick

Posts: 24143
Re: what is that tube???
Reply #5 - 05/13/23 at 22:26:02
 
Yes, you may have found it. I would not be surprised that it sounds very good.
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HR-1,ZBIT,ZROCK2,SEWE300B,CSP3-25mod; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II, P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3; VooDoo:Cremona+Amati interconnects, IsoPods; headphones: Sennheiser HD800S,ZMF Ori,Oppo PM1
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michaelG
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Posts: 67
Re: what is that tube???
Reply #6 - 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
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Lon
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"Love without
guts is
worthless!"
Philip K. Dick

Posts: 24143
Re: what is that tube???
Reply #7 - 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.
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HR-1,ZBIT,ZROCK2,SEWE300B,CSP3-25mod; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II, P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3; VooDoo:Cremona+Amati interconnects, IsoPods; headphones: Sennheiser HD800S,ZMF Ori,Oppo PM1
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Rivieraranch
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Re: what is that tube???
Reply #8 - 05/14/23 at 15:50:09
 
Whatever tubes are listed on eBay now are the dreks.
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Lon
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"Love without
guts is
worthless!"
Philip K. Dick

Posts: 24143
Re: what is that tube???
Reply #9 - 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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HR-1,ZBIT,ZROCK2,SEWE300B,CSP3-25mod; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II, P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3; VooDoo:Cremona+Amati interconnects, IsoPods; headphones: Sennheiser HD800S,ZMF Ori,Oppo PM1
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