Which rectifier tubes are still manufactured?

Rundmaus · 2nd December 2010, 07:45 PM

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

kstagger · 07:57 PM

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.

DF96 · 2nd December 2010, 08:48 PM

I think JJ do an EZ81.

Miniwatt · 2nd December 2010, 09:15 PM

Quote:

Originally Posted by DF96

I think JJ do an EZ81.

Correct

Jim McShane · 2nd December 2010, 11:26 PM

Quote:

Originally Posted by DF96

I think JJ do an EZ81.

So does Electro-Harmonix.

Vinylsavor · 3rd December 2010, 06:32 AM

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

davorin · 3rd December 2010, 07:11 AM

274A and 274B from SHUGUANG.

2nd December 2010, 07:45 PM	#1
Rundmaus diyAudio Member Join Date: Aug 2005	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

2nd December 2010, 07:53 PM	#2
kstagger diyAudio Member Join Date: Dec 2003 Location: Grand Rapids	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 07:57 PM.

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2nd December 2010, 08:48 PM	#3
DF96 diyAudio Member Join Date: May 2007	I think JJ do an EZ81.

3rd December 2010, 06:32 AM	#6
Vinylsavor diyAudio Member Join Date: Feb 2002 Location: Lindau	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

3rd December 2010, 07:11 AM	#7
davorin diyAudio Member Join Date: Aug 2005 Location: Zadar, Croatia	274A and 274B from SHUGUANG.

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