You don't need that much power, but an amp with low output impedance in the treble. Unfortunately most amps rise in the treble, so this can be difficult even with high current amps.
As others have recommended, the Sanders Magtech amps are designed for electrostatic amplifiers, and have copious power. I'd definitely consider auditioning those, especially for the right price. :)
As others have recommended, the Sanders Magtech amps are designed for electrostatic amplifiers, and have copious power. I'd definitely consider auditioning those, especially for the right price. :)