I guess it was time, but the stax mafia is working hard on a circlotron for electrostatics.
I have 2 versions, one of which is all solid state, and fully dc coupled, and the
other uses a pair of 6s4's for the gain stage, and either triodes, or ultra low
capacitance silicon carbide fets for the outputs and is also fully dc coupled.
circlotrons make my brain hurt. Its all Jason's fault.