@lewm stated "Hearing is believing ".
I stopped taking description of Audio Equipment's end sound as a guidance many many years past. I have been much more interested in being able to encounter sound and form my assessments, as a result of the impression that had been made.
Isolated / Insular Listening experiences leaves an individual quite limited in their experiences of sound being produced from recorded music replays.
My friend who tinkers with the 57's will be informed of the design for Quad 57 mentioned by @lewm, maybe I can hear one, especially as I donored 2 x 57's to support their own array method used.