Best amps for full range electrostatic loudspeaker

which speakers?

Try the Innersound stereo amp. I've heard it on Sound Labs, Magnepan, Martin Logan & Acoustat. It's built for panels............

I prefer low feedback,high current amps. The brands that come redily to mind(without spending an arm and a leg) are AVA, Monarchy Audio,and the amp/preamp section of the Magnum Dynalab MD-208,but that is just me;your tastes may differ.
Allow me another personal opinion. The acoustics of the room and speaker placement are important with panels.

I use Mcintosh with my Martin Logans. Innersound also specializes in this area.

I own and sell Sound Labs, and also sell several amplifiers that work well with 'em - including Atma-Sphere, Wolcott, Parasound JC-1, InnerSound, GamuT, and Clayton Audio. Among the amplifiers that customers of mine have had good results with include models by Audio Research, Levinson, McIntosh, Accuphase, Viva, VTL, and CAT. These are by no means the only contenders.

In a push-pull tube amp, look for a wide bandwidth output transformer. In a solid state amp, look for a lot of wattage and current delivery capability as a starting point, but that's unfortunately no guarantee of a good match.

Note that the amps mentiond here also work well with other brands of electrostats, for the most part. I'm not sure that there is an absolute "best" amplifier for electrostats - as in most things audio, there are tradeoffs involved. I'd need to talk with a person to find out their priorities before making a specific recommendation.

Duke