Hello SOT
I don't know back in the late 50's and early 60's when stereo was being born "High Fidelity" was the name of the game. Basically Fidelity to the source and they had their own generation of "demo" records at the time. I don't think things have really changed all that much except maybe the program material chosen for the demo's.
When I go to a show I bring my own music. Demo music in most cases is not what I would normally listen to some of it contrived for a wow factor.
As far as modern speaker designed for a wow factor?? I hope not and would like to believe they stick to the original meaning of High Fidelity.
I want a neutral speaker not something "voiced" to what someone else thinks sounds best.
Rob