The Sanders Magtech amp is designed to play electrostatics. Not inexpensive, but should be mentioned to make this thread more complete. A friend uses a 200 watt per channel Classe to drive Martin Logan CLS. I use Acoustat Model 3 ( full range) with Hafler DH 500 modified by Musical Concepts. 

Acoustat speakers seem to be very reliable. Perhaps the most reliable stats made. But, every product breaks once in a while. 

Enjoy the stats,

aldnorab