Ears hurt when listening after changing speakers

Very good point Eric. With speakers, as well as everything else, one size doesn't fit all. 
As much as I would love a Ferrari, or even my old 67 muscle car Camaro, where I live now (notoriously bad roads and an abundance of dirt roads and primitive back roads) my 4x4 Chev. truck is much better suited.
While, for many years, I did attend about every genre of live performances - rock concerts, folk and country concerts, full orchestra and small venue jazz and blues performances - now, I'm quite content to set back in a quiet room with a cold brew and enjoy a long secession with my favorite tunes at somewhat more relaxed environment at a much lower volume. For that, for me, my little Maggies work incredibly well, but certainly not everyone's cup of tea.
As always - appreciate your knowledge and input....Jim  

I would add one more thing. The kind of fatigue you describe could also be caused by bad or shorted interconnects up stream, causing a real low hum. 

That beryllium dome could be making you a little jumpy. I had been a dealer for Merlin's until I realized that the Esotar tweeter was so bright I couldn't stand to listen.  Sold the demo's and discontinued the line. I never want to let a customer suffer through that or myself. 

Hmm. You think Dynaudio Esotar tweeters are bright? Never heard that before. 

mofojo

I attribute that to my excellent hearing.........lol

Brighness is a matter of balance, so involves the entire system, not just the tweeter.

I haven't heard those speakers, but I am sure I can make speakers with any drivers sound bright. 😀