RE: Russian tubes quality vs year of fabrication

Tube DIY Asylum

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In Reply to: Russian tubes quality vs year of fabrication posted by jorisdallaire on November 12, 2014 at 07:44:25:

You (and I) might learn more about this subject over on the Tubes Asylum, but from what I've read, the optimum vintage of any Russian tube seems to be a function of the tube type. For example, I used 6C33Cs in my amplifiers. The scuttlebutt was that the best of those were made in the Ulyanov factory up to the early 90s, and they bear/bore that winged logo. Later 6C33Cs are said to be less reliable and less consistent in their operating parameters, but I have no personal proof that this is true. With 6C45s and 6H30s, there is also a belief system in play.

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Follow Ups Full Thread

Topic - Russian tubes quality vs year of fabrication - jorisdallaire 07:44:25 11/12/14 (3)

Thanks gentlemen! (nt) - jorisdallaire 11:53:38 11/13/14 (0)

RE: Russian tubes quality vs year of fabrication - Lew 18:49:40 11/12/14 (0)

RE: Russian tubes quality vs year of fabrication - Chip647 14:31:14 11/12/14 (0)

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RE: Russian tubes quality vs year of fabrication - Lew 18:49:40 11/12/14 (0)

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