Although it would be financially insane to do so, you could take a pair of
krell master reference monoblocks and use them as a really great electrostatic
amplifier. Although not the voltage champ compared to purpose designed
electrostatic amps, they easily do 800+ VPSS. (+/-220V power supplies)
And the fact that that ground is exactly in the middle makes adding
a bias supply trivial.
I did try my fpb600 amp which is about 300 VPSS, and it did sound