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In Reply to: Not in my experience posted by Jack G on June 26, 2012 at 10:36:21:
The simple tap with eraser test always seems to elicit some kind of a response. So depending on the natural response to specific testing procedures you can make almost any tube "microphonic. The tubes may have changed little but the obssession with tubes may have spuriously increased the percentage the number of microphonic tubes.
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Follow Ups
- Yes by virtue of they are. - Mechans 14:53:56 06/26/12 (2)
- RE: Yes by virtue of they are. - twystd 22:37:59 06/26/12 (0)
- Yes, all tubes are microphonic - Jack G 15:38:01 06/26/12 (0)