The Innersound ESL amps were designed to drive the capacitive load of electrostatics. They will do so while sounding outstanding and without strain. An electrostatic speaker is a capacitive load which is very difficult for most amps.
Class D Amp For 'Stats?
For a number of reasons, I am considering the purchase of a Class D amp (or amps) to drive my Sound Lab A-1s. Most uses of such amps detailed here and elsewhere seem to have been with 'conventional' speakers, which obviously present very different impedance loads than a full range electrostatic (approximately 40 ohms in the bass, dropping to 2 ohms at the highest frequencies). I would be most interested to hear of members' experiences.