My Tube Collection, Welcome to share yours

[CDawg]

Since you speak about chinese tubes, I have a 12AX7A made, from what I know, by Shuguang.

View attachment 156851
Any opinions on this one?

Chinese military tube made in Beijing known by many names such as 6N4-J, 12AX7 C8, Chinese 8th Generation, etc. . There's a lot of guitar players into that tube because it came stock in their gear for the mid 1980s to mid 1990s. Mostly guys into Marshalls, Mesa Boogies, Peaveys , etc. playing hard rock/heavy metal.

Personally I wouldn't use it for input, gain stages or the phase inverter position but I'd consider it for a reverb driver or the effects loop.

 

[Mr.Miniwatt]

I am not a guitar guy, but I am a heavy metal one. But I just listen, so I never used this one and I was curious about it.

 

[oldvinyl]

Since you speak about chinese tubes, I have a 12AX7A made, from what I know, by Shuguang.

I have ShuGuang (Valve Art) KT-66 and WE-274B from about 25 years ago. Never got to use them since I found GEC KT-66s and the 274B did not directly replace 5U4G (without modifying the amps).

Wonder when these become "NOS"?

 

[Mr.Miniwatt]

Some call these already NOS, especially sellers who want to obtain a better price.

 

[oldvinyl]

1959 Tung Sol 6SN7WGT

 

[escultor]

The 845 RCA
two pairs and spares

 

[escultor]

845 United three different constructions

 

[escultor]

 

[escultor]

Working Elrog

 

[oldvinyl]

Ok, ok. I get it. We’re in big tube mode now.

 

[Mr.Miniwatt]

Then maybe a pair of tiny Telefunken EC88 can restore the equilibrium.



Some more details:


The tube is so small that they split the date code in 2 lines. Seems made in Berlin.

 

[adrian cheng]

RCA 5814A

 

[escultor]

Ok, ok. I get it. We’re in big tube mode now.

I'm actually a fan of low-power triodes; I think they sound far better. I just thought I'd start with the high-power ones.

 

[oldvinyl]

Triodes? How about dual 805s packed together? 150 Watt rated.
These are KR 1610 tubes (next to an 845).

 

[oldvinyl]

This is how much oxidation accumulates with several hundred hours usage. This is from cleaning all 8 pins.

 

[escultor]

now we are talking !!

 

[adrian cheng]

Lorenz

 

[escultor]

Eimac 100TH at work

 

[oldvinyl]

1943 RCA 6SN7GT smoked glass.

 

[oldvinyl]

RCA 5814AView attachment 156933

These are amazingly clean. They look brand new.