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In Reply to: Fed up with old stock 12AX7 RCAs dying or becoming microphonic! posted by Paul Kehayas on December 20, 2016 at 13:11:36:
New tubes can be microphonic. I does not show up on most testers, either. You have to put them in a circuit. A reputable sellse should accept returns, though.
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Follow Ups
- RE: Fed up with old stock 12AX7 RCAs dying or becoming microphonic! - Alpha Al 12/20/1613:25:09 12/20/16 (1)
- RE: Fed up with old stock 12AX7 RCAs dying or becoming microphonic! - Paul Kehayas 13:59:12 12/20/16 (0)