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RE: can i sub a 12ay7 for 12ax7?

Thank you James. I did in fact replace all 3 ax7 with 5751 but the difference as you mentioned was slight. On the other hand I changed the FB resistor which was 7.5K to 6.8K which yielded about a 10 degree difference in preamp volume control. Actually, I have just since sold the amp but I will pass on the information to the new owner. Thanks a bunch, Dak


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  • RE: can i sub a 12ay7 for 12ax7? - DAK 10:48:58 08/15/15 (0)

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