Articnoise
Headphoneus Supremus
I'm listening to one now. A demo LCD 3F from my dealer that had its drivers replaced last month. Sibilance in every pronounciation of an s and breathy voices - plus elevated upper mids.
Is the demo ex burned in? Otherwise let the LCD 3 play for 200 hours. It will open up the sound and smooth out the harshness of the treble.
IME