So what's your favorite 9 pin high gain dual triode? Obvious choices are 12AX7 or russian 6N2P.
BTW, if you want to know the application, I'm thinking of using an Aikido PCB as the driver board for a 6L6 amp, so mu needs to be twice what's needed to take line level up to drive the 6L6.
BTW, if you want to know the application, I'm thinking of using an Aikido PCB as the driver board for a 6L6 amp, so mu needs to be twice what's needed to take line level up to drive the 6L6.