I am not expert on electrostatic speakers
Well, I'm not an expert on electrostatic headphones.
Stax headphones do have high voltage not only on diaphragm but also on stators
That's a given for electrostatic operation.
Looking at some Stax schematics, all I see (so far) are tube amps (naturally higher voltages).
The transformer is cheap and simple solution
Headphones don't require much power, making them a good candidate for transformerless tube power.
My panels are 720 square inches. Headphone, maybe 2?
I don't know of any high voltage solid state amplifiers in the the audio realm.
I wonder what an OTL tube amp to give the same results as what I'm using now would look like?
(transformer) isnt as good as proper amplifier becose amp will have flatter frequency response and be more linear.
Maybe.