If you really want to learn more about tubes you’d better read Tube Assylum forum, some folks like are crazy about tubes and tried almost everything and they are not sellers. I spent a year on this forum just reading and making notes. If you’re in America then vintage Sylvania Gold Brand (Gold Pins) 12at7WA is superb even compared to my Telefunken ecc801s.
The best tubes are NOS Military Grade, they last much longer, they are stable, low microphonic and very quiet. None of the new 12AT7 or 12AX7 can beat them. Tube rolling is fun, but very expensive.
Look for NOS tubes, save for NOS tubes.
I don’t know much about 12AX7, used Soviet tubes in my Luxman amp for a short time, but 12AT7 was in my WLM Minueta amp for many years and i’ve been looking for cheaper alternative of Telefunken ecc801 (very expensive), i found Sylvania 12at7WA and Matsushita 12at7WA (gold pins) amazingly good.
The best tubes are NOS Military Grade, they last much longer, they are stable, low microphonic and very quiet. None of the new 12AT7 or 12AX7 can beat them. Tube rolling is fun, but very expensive.
Look for NOS tubes, save for NOS tubes.
I don’t know much about 12AX7, used Soviet tubes in my Luxman amp for a short time, but 12AT7 was in my WLM Minueta amp for many years and i’ve been looking for cheaper alternative of Telefunken ecc801 (very expensive), i found Sylvania 12at7WA and Matsushita 12at7WA (gold pins) amazingly good.