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7199 Longevity

I posted this on the Dynaco forum but haven't gotten any responses. Does anyone here know the number of hours one can expect to get out of a good pair of NOS 7199 tubes? From what I have been able to gather these tubes seem to last a very long time in comparison to some but I haven't been able to find anyone with an estimate, industry or otherwise.


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Topic - 7199 Longevity - Paully 08:27:58 06/08/06 (0)


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