I finished preamp:
now workin on hybrid output.
Did some searching and considering something along this topology.
opinions? good bad ugly ?
use a horizontal output BJT on the low side and connect the collector to the plate , base to cathode 10 ohm emitter resistor and adjust setup for proper operating current.
this way a cheap $4 transistor has 1500v blocking ability.
6922 works fantastically in similar setup