I remember some discussions I was having with someone on another forum (he was helping me troubleshoot a tube amp) and he told me that he has electrostatic speakers (I seem to remember he said that they were "true electrostatic speakers" and that they each had to be plugged into an outlet, I think maybe he said that they were "Quads"?), anyway, he was using an ARC (tubed) 70 wpc stereo amp to drive them with and he was quite pleased with the system. He referred to it as "holographic."
Electrostatics and tubes
I am looking to get some new to me speakers, I've been looking at options and would really like to try a set of planars "electrostatics". I have read or heard somewhere that as far as speakers go they tend to be inefficient (85 to 89) vs.90+(db) on the Klipsch or Dali's I've been tossing around as a standard speaker option. I guess my question is would I need to worry about any over heating issues. I plan on using plenty of power with a set of VTA, M-125's to power them. I am looking at a lower budget set maybe Martin Logan ESL 9's or Magnepan 2.7i . Just wondering I would hate to over heat a few hundred dollars worth of tubes if I don't need to. ¯\_(ツ)_/¯ don't roast me to bad I cry easy 
thanks.