TOO MUCH VOLUME WITH DISTORTION MIGHT DO THAT!! I prefer McIntosh tubes and Vandersteen speakers and 'normal' volume.
I have no taste for classical, prefering music with lyrics.
Regarding reflex vs. acoustic suspension speakers, it is well known that reflex speakers have more distortion in the bass. But, our hearing does not pick that up as much as it would in the mid range. So, maybe that is a moot point. I'd think that the treble being harsh due to a forward biting tweeter could cause ringing,especially if the room has excessive reflections. I can listen all day with no fatigue to my system. I you can not, there is a problem somewhere. Mating solid state with a biting tweeter and cold walls in your room could be the problem. More volume just makes it worse.
I have no taste for classical, prefering music with lyrics.
Regarding reflex vs. acoustic suspension speakers, it is well known that reflex speakers have more distortion in the bass. But, our hearing does not pick that up as much as it would in the mid range. So, maybe that is a moot point. I'd think that the treble being harsh due to a forward biting tweeter could cause ringing,especially if the room has excessive reflections. I can listen all day with no fatigue to my system. I you can not, there is a problem somewhere. Mating solid state with a biting tweeter and cold walls in your room could be the problem. More volume just makes it worse.