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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: RE: Russian substitutes for 6922 and 12AX7 tubes posted by Mechans on January 10, 2017 at 04:11:50:
...the Soviet tubes made before the USSR collapse have substantially higher quality levels.
I will not speak for the sound, as it is very subjective, but it is sufficient to say that we had to reject up to 30-40% of tubes in some current production batches. The results are highly inconsistent - there are good batches and bad ones - something we simply do not see in the earlier tubes, where the rejection rates are close to zero.
There are many reasons for that, the main one being that the tube production used to be one of very important military field, with its associated tough standards on everything.
Today it is basically a cottage industry, where every producer sets his own standards.
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Follow Ups
- As the general rule... - Victor Khomenko 07:16:29 01/11/17 (2)
- RE: As the general rule... - Tre' 14:53:18 01/12/17 (1)
- I suspect a bit of both... - Victor Khomenko 12:02:47 01/16/17 (0)
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