[Amps] Cathode resistor in GG amps

[Tony Brock-Fisher]

Maybe I can get the ranting/flaming to stop with a distraction:


I've gotten my early AL80 one-lunger to work pretty well, and added many protection mods (no, no nichrome involved). One thing I noticed is it has a 27 ohm resistor (actually 3 x 82 ohm 2 watt) in series with the cathode. I think this provides negative feedback, and also increases the required drive for full output to 100 watts. Am I correct here? Does it improve linearity? Are there any downsides to it?

-Tony, K1KP