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Old 2nd December 2010, 08:45 PM   #1
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Default Which rectifier tubes are still manufactured?

Hi,

as I am still planning a tube PS for my amp, I was wondering which rectifier tube could be used.

If one doesn't want to rely on NOS or used tubes, a quick search on the internet showed me the following still-manufactured tubes:

directly heated: 5U4G, 5U4GB, 80

indirectly heated: 5AR4/GZ34

Does anyone know more? Is there any manufacturer that still produces EZ80/81?

Best regards,
Andreas
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Old 2nd December 2010, 08:53 PM   #2
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not sure if the half-wave 6D22S is still being made but a pair of them would be an interesting alternative.

I've recently gone over to snubbed solid-state diodes since I haven't been happy with the reliability of the new tubed rectifiers.

Last edited by kstagger; 2nd December 2010 at 08:57 PM.
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Old 2nd December 2010, 09:48 PM   #3
DF96 is offline DF96  England
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I think JJ do an EZ81.
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Old 2nd December 2010, 10:15 PM   #4
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Quote:
Originally Posted by DF96 View Post
I think JJ do an EZ81.
Correct
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Old 3rd December 2010, 12:26 AM   #5
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Quote:
Originally Posted by DF96 View Post
I think JJ do an EZ81.
So does Electro-Harmonix.
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Old 3rd December 2010, 07:32 AM   #6
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Hi Andreas,

why do you want to refine yourself to rectifiers which are currently manufactured? There is an abundance of choices of NOS tubes available for low cost. If you go the TV damper route, you'll get much better performing recifiers at low cost. Many TV dampers are available for $1. You can get a life time supply for the same cost as a newly manufactured 5AR4. Only downside is, you need 2 tubes, but in a DIY project that should not be an issue.

If you insist on a conventional tube rectifier, consider the 5X4. Electrically equivalent to the 5U4 just a different pin out. Available as NOS tube at much lower cost than the 5U4.

Best regards

Thomas
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Old 3rd December 2010, 08:11 AM   #7
davorin is offline davorin  Croatia
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274A and 274B from SHUGUANG.
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