The best way to explain this is with your EARS. Go to a high-end shop. Listen to the same source--one you believe you know well--on any and every box or horn or whatever speaker they have.
THEN, listen to the same source on Magneplaner speakers. If you cannot tell the difference, buy the speakers you like best. If you can, you have learned what I did in the 1970's. ALL box speakers change the sound of the source. Some may like that, some may not. Maggies deliver whatever you send them. Once again, some may like that, some may not. As for pure electrostatic speakers, give them about 30 minutes or so and you will understand the term "listening fatigue."
Cheers!