I have never heard quad esls have a dynamic low end like is possible with good full range dynamic speakers. I always figured that to be their inherent achilles heel, as is the case with planars generally. Have not compared with a good beefy SS amp though. I would expect some difference there I suppose, the question would be how much and what happens to all the rest.
I have heard some very good results with bass dynamics using es headphones, like Stax, so I have to think such things on a larger speaker scale are possible, at least in some rooms with some amps.
I tend to like tube amplification best though I would say with my Stax electret (not es) phones, FWIW. Of course, those use the custom Stax transformer box to help get things right.
Maybe there is a similar transformer device possible for use with large es speakers to help address the electrical issues?
Did not realize es speakers had those electronic properties. Sounds like you almost need some kind of extended bi or multi-amping to really get best results, more so than with most any other kind of speaker perhaps? OR maybe a Stax-like transformer box designed to solvethe problem, if such a thing exists?
I read the key to driving ES speakers effectively is high voltage. That is an attribute of Class D Icepower amps I believe.
Has anyone tried a high voltage Class D amp with ES speakers? I'm thinking it might be a good match.