What do you think about this change to the Poseidon board to accommodate the unused triode (an CCS grounded cathode amplifier)?
I am using 6SN7's to make the amp less sensitive.
Are there any optimizations you would make, like changing the voltages, plate/cathode resistors, etc, assuming 6SN7s are used? I will be driving a PPP stage with this configuration. I have a plan on how I will find the optimum feedback.