Tubes Asylum

What is the Russian wonder tube that subs for a 6L6GC/5881?

62.44.135.21

Frihed89

I bought a pair years ago when they were really cheap, but gave them away to a guitar friend.

I've forgotten their designation.

Follow Ups:

I am also confused - Frihed89 09:40:25 08/12/15 (3)
OK, I have 4 3PiC tubes working as 5881s (class A PP)in an amp i am listening to. I can't find any sheets for it. It certainly doesn't look like a 6Pi3S-E. I did find a tube sheet for both tubes (see url below), but it is a bit confusing.
The sheet says it is for:
6P3S, 6P3S-E/(6n3C, 6n3C-E). I know a russian Pi looks like an N, but is the C an S?

If that's the case, then that confusion is cleared up. But which is more true to the 5881 in class A? The sheet i have for the Tungsol 5881 (http://www.mif.pg.gda.pl/homepages/frank/sheets/127/5/5881.pdf) isn't very helpful/comparable, nor the TDSL information. The plate voltage, heater voltage and current of the amp make it look like the 6PiCs that I am using are close to a 5881. Oh, the amp is cathode biased.

A call to the mfr says that "It doesn't matter, I don't think. You can stick a 6L6GC or an EL34 in there if you want." based on their experience.

I guess this is par for the course.
- Russian (Cyrillic) Characters - Eli Duttman 16:07:13 08/12/15 (1)
  Follow the link.
  
  Eli D.
  - Russian Characters (Open in New Window)
  - RE: Russian (Cyrillic) Characters - Frihed89 00:47:23 08/13/15 (0)
    The i guess it's the "e" that accounts for the difference in electrical properties and "looks".
- RE: I am also confused - Victor Khomenko 11:19:16 08/12/15 (0)
  ***6P3S, 6P3S-E/(6n3C, 6n3C-E). I know a russian Pi looks like an N, but is the C an S?
  
  Yes, and the original Russian model is 6П3С, where П means pentode or tetrode, and C means glass envelope.
RE: What is the Russian wonder tube that subs for a 6L6GC/5881? - Eli Duttman 09:56:22 08/11/15 (2)
6П3C-E (6p3s-e) is what you have in mind. Prices have skyrocketed. :> ((

Eli D.
- RE: What is the Russian wonder tube that subs for a 6L6GC/5881? - Jim McShane 14:26:43 08/11/15 (1)
  The supply of the old stock is about gone, that's why.
  - RE: What is the Russian wonder tube that subs for a 6L6GC/5881? - Frihed89 15:36:54 08/11/15 (0)
    Are the one's left microphonic? That has a way of happening with Russian tubes.

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