I agree looking into NOS 5751 tubes since I use a set in my preamp section. I would contact Brent Jessee for advice since he stocks many 12AX7 type tubes. He has some matched sets that are a bit over $100.
Seeking a Warm 12AX7 Tube for Preamp
Hi All-
I got hold of a newer tube preamp. I bought some match ed JJ 12AX7 tubed and after they burned in for a bit, they sound very strident and bright. Can anyone recommend a tube brand that will be warmer in the upper mid and high frequencies? I can't afford NOS. I'd like to keep it under $100 for the pair matched. Viva Tubes has the new Mullard reissues, PSVane Art Series, Electro Harmonix Gold Pins, and Tung Sol Gold Pins in their new stock that are matched. Any suggestions?
Thanks