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In Reply to: What is the total life exptectancy of the RCA 12AX7 black.. posted by Michael N. on June 6, 2005 at 07:26:10:
I doubt 25K hours for high end audio purposes......maybe the thing would still function, but I can not imagine it still having the same magic as it had in younger days. IMO. This is a killer and longlasting tube.......25K just sounds like a LOT of hours.
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- Re: What is the total life exptectancy of the RCA 12AX7 black.. - Sherlock 16:03:05 06/06/05 (0)