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Well I actually want to do a common-cathode PP driver. Assuming the inductance would be sufficient (say a small 8K p-p tranny with a pair of triode-wired 6V6's) and I include a balancing pot on the cathodes to ensure equal current, then I could cap-couple the plates to the output tubes, yes?
Take a look at the Peerless A100A circuit. The center tapped choke in that design, used as cathode load for PP 6SN7 driver, was a replacement grade Peerless output trans (10k I think).
There you have a low impedance driver with low DCR to ground if you really want to drive the snot out of a triode grid.
Peerless A100 was Class AB2 6A5g (indirectly heated 6A3 variant). I wrote this amp up in one of the last SP issues. I still have the pair I built 20+ years ago.
Check the Altec 1570B circuit for a beefier version of this topology.