Almost universally, people don't like treble in the tone of electric guitar.
I made experiments found that a sharp (4th-order) roll-off at about 4kHz was just the ticket.
Part of it is that electric guitar tone is an acquired taste, but I would think there a physiological reason to that in addition.
Interesting. In my limited experience that's true. Higher frequencies giving a "Bee in a jamjar effect" Although if micing a typical amp you don't get much out of the speaker above that ? And you can usually safely hpf at 150/200 Hz in most cases to avoid "mud'.