Recommedation to drive Electrostatics? ML, Inner?

The Innersound ESL amps are great with digital sources.With a good analog front end,you will know something fas been overlooked.
The older Krells will have problems with their output transistors-test fine,but can leak or malfunction.
As a note:the WRAD 300/i-tube was designed specifically to drive the unusual impedances of an ESL.

with my Innersound Eros I use the Innersound Bass amp 200w
and I use an older Proton Dual Mono amp with 200w@4 ohms and I need no more power, I dont listen at ear splitting levels but I also feel that in some cases these amps that are being suggested are over-kill, no such thing as too much power but there is a point where you can get great performance without alot of cash. I strongly suggest you add a tube pre as others have also suggested.

Almost any amplifier will drive any speaker,how well that amplifier does its' job can be the difference between night and day.Many solidstate amps become a little thin when dealing with the complex load.2-100 ohms.
On the cheap:Many are having good results with slightly modified ART SLA 1/2s (100/200w).
Or you could wait for a fellow audiophile to give you an amp.

Take a look at the 200 series from Blue Circle with the Tube pre-amp. The 204 and 206 are great with the ML's.