Dropping a 12AT7 in for a 12AX7 does more than reduce gain. The cathode and plate resistors should be changed to make the 12AT7 operate in the most linear fashion. The two tubes have very different transconductance and plate resistance.
12at7 with 12ax7 tubes
Greetings and Happy Easter,
This post has probably been answered before at some point. I have a Symphonies pre V2 that uses three 12ax7 tubes along with a 6x4 rectifier. I wanted to know if I could use a pair of 12at7 tubes for the output section with no ill effects. Thanks to all and good listening.
This post has probably been answered before at some point. I have a Symphonies pre V2 that uses three 12ax7 tubes along with a 6x4 rectifier. I wanted to know if I could use a pair of 12at7 tubes for the output section with no ill effects. Thanks to all and good listening.