I would like to ask how long (POH) does it take to a new 12bh7 tube to reach its maximum performance, more or less of course.
It is a NOS RCA made in USA.
Thanks and regards,
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Topic - Break-in of 12bh7 tube. - beppe61 02:56:21 03/14/07 (1)
- Re: Break-in of 12bh7 tube. - beppe61 03:25:41 03/14/07 (0)
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