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In Reply to: RE: 6np3-se tubes posted by FenderLover on February 15, 2012 at 12:25:55:
Yes, as Victor said, "OTK" means "Technical Control Department".
By the way, I was told that the Gorbatchev-era tubes are allegedly not good. I don't know whether it is true or not, but the 6np3-SE tubes in question are manufactured in 1987.
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- RE: 6np3-se tubes - Tubers 00:44:19 02/16/12 (0)