In the recent edition of TAS, Jim Hannon says that matching an amp to the Quad ELS is critical. In a past edition of TAS, Dick Osher touches on Amp matching to a Quad in a side bar --- he indicates that because of the unique load the ESL shows the amps, some amps are better suited at driving the speaker. Several years ago HP awarded a Golder Ear aware for the Innersound Amp that was effectively designed for electrostatic speakers saying it might have just slighted increased the dynamic range of his ESL. Jon Valin is reviewing the current ESLs now and no doubt is using different amps to better understand what works best with the speakers. I have also seen raves about 20watt amps and 400 watt amps working with the Quads. Despite these references, I feel that there has been little discussion about what is meant with Amp matching for Quad ESLs.
Are the writers suggesting that a family of amps that share a common topology are better suited for ESLs. Or, that the ESLs actually are so transparent that perhaps some amps actually do sound better with them despite how they might be designed to interact with a speaker (reactive load or other). Here I am suggesting that quality of design is distinct from philosophy of design. (Perhaps this is a leap of faith!)
I would be interested in better understanding what Jim, Dick and others mean when they suggest amp matching is especially important with Quad ESLs.