https://www.stereophile.com/content/mark-levinson-hqd-loudspeaker-system
https://www.google.com/search?q=levinson+hqd+system&rlz=1C1CHFX_enUS563US563&tbm=isch&so...:
Full Disclosure: We made a few pair of stands for this system (the ones in this picture, I think), and it was not bad when not driven by Levinson hardware. They were one of the first to realize that imaging size was important, and electrostatics have their aficionados.
Even the great Bob Fulton used a pair of RTR electrostatics in his Modular J system back in the day. (His 80 and 100 boxes are about the best I ever heard from a box back in the day...)
https://www.stereophile.com/content/fulton-musical-industries-model-80-j-modular-loudspeakers-fmi-cu...
http://fultonmusicalindustries.com/
Unfortunately, they are not as accurate as some other designs (Magneplaners) that provide better imaging and more accurate reproduction. BUT, they were and are pretty cool speakers. Enjoy them!
Cheers!