Tubes Asylum

GZ32 Marked Mullard. I have a few of these NOS that . .

172.56.81.223

John PA

I always thought were Mullard but didn't look hard at them. I have 9 NOS. Gave one to a friend years ago show put it in a circuit for a GZ34 and fried the tube. To me they look like Miniwatt Dario. What do you think?

iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.

Edits: 02/11/23 02/11/23 02/11/23 02/11/23

Follow Ups:

Easy to confuse 5V4G and GZ32..... - andy evans 12:44:12 02/11/23 (2)
.... especially when all the markings are rubbed off.
If in doubt assume the valve is a 5V4G and thus lower power. There are fakes about and you can be misled.

Edits: 02/11/23
- RE: Easy to confuse 5V4G and GZ32..... - Sibelius 08:37:29 02/15/23 (0)
  It was awhile ago, but I bought a JAN Philips 5v4g from Charlie of Vacuum Tube Valley (RIP). Evidently it was actually a "mislabeled" 5AR4, not by him, but Philips or whoever stamped the box. Whether intentional or not I don't think anyone ever confirmed. I remember there was some discussion here about it, but I can't seem to find the thread.
  
  I don't use the preamp it was installed in any longer, but when I had it repaired the tech said it was still in perfect condition 10 years after I bought it.
- R7 U FA shsound designate . . - John PA 12:54:22 02/11/23 (0)
  it as a GZ32. They all measure extremely good. Both halves being almost exactly the same for current draw and rectifier measurement.
  
  iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.
RE: GZ32 Marked Mullard. I have a few of these NOS that . . - sony6060 11:49:18 02/11/23 (2)
Tubes look like a 5V4G.
- And I found that R7 is for GZ32 .. - John PA 12:14:30 02/11/23 (0)
  when searching for more information. So yes, 5V4G type.
  
  iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.
  
  Edits: 02/11/23 02/14/23
- I looked some more and they look like these, which are GX32. . - John PA 12:12:47 02/11/23 (0)
  from a tube site. And this seems to match the Dario Miniwatt.
  
  iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.
  
  Edits: 02/11/23

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