No high-amp I do not think it is your ears. I know all those cuts intimately.
You have a rising response in the upper midrange. I would guess it is the interaction with your room. Hang a rug behind your system rack and run a line of acoustic tile on both sides of the fireplace. https://www.parts-express.com/sonic-barrier-fwp122-studio-acoustic-foam-wedge-panel-12-x-12-x-2-black-12-pack--260-547 If you have any control over frequency response drop the treble 6 dB at 20 kHz. Push the MLs another foot apart. Another solution would be room control. Check out Anthem.
Even with room treatment ML's are going to get harsh when you push them hard. They are really are not for people who like to listen over 90 dB. As for easy to live with dynamic speakers check out Sonus Faber Sonetto 8's
You have a rising response in the upper midrange. I would guess it is the interaction with your room. Hang a rug behind your system rack and run a line of acoustic tile on both sides of the fireplace. https://www.parts-express.com/sonic-barrier-fwp122-studio-acoustic-foam-wedge-panel-12-x-12-x-2-black-12-pack--260-547 If you have any control over frequency response drop the treble 6 dB at 20 kHz. Push the MLs another foot apart. Another solution would be room control. Check out Anthem.
Even with room treatment ML's are going to get harsh when you push them hard. They are really are not for people who like to listen over 90 dB. As for easy to live with dynamic speakers check out Sonus Faber Sonetto 8's