gofar99 wrote on Tue, 23 July 2024 21:52

I find the JJ KT88s to last forever. The ones in my original amps (2009) are still fine. I run them in class A at 85% dissipation U/L mode.

Seems like I remember you saying this on another thread, or might have been in person at one time, probably at LSAF one year.

I thought it was likely that the differences in what I got out of my JJs and what you did was the circuits they were being used in. That Audio Note SET circuit definitely eats JJs so maybe they run more quiescent current or something.