power rail resistors

[ernie_jr]

ok, so finally building my SUNN 200s with a second preamp from and Ampeg B25. In the Sunn, the secone resistor in the power rail is 33K, if I am adding a second 12ax7 would I drop the resistor to a 22K?
Thanks,
Ernie

[sluckey]

I don't think you need to change value at all. However, I would prefer to add a separate B+ node for the Ampeg preamp. Like this...

[ernie_jr]

that works and is easy to do
Thanks Sluckey