Open question regarding 6J5's. Does anyone have a set of recommended operating points for these valves? I have the data sheet, but nothing beats actual setups. They are being used as part of a phono amp with ecc88's upfront and 300B's downstream.V
I have some tasty 6J5s here rare brown base. Half of a 6SN7. I find with most tubes there is no real set parameter, usually is just trial and error, and you are right there is a sweet spot. That is why a variable resistor is handy.