I had similar troubles and even switching speakers did not completely ameliorate the problem. It turned out that I have a difficult room and was able to get beautiful smooth sound by addressing that. A good test was to buy some cheap gobos (portable sound absorption panels on stands) and use them to block the first reflection points (use a mirror to find those). Also I did some near field listening. That made the harshness go away, so I could tell it was the room. We now have a lovely display of strategically placed pillows. Also found that, with the listening couch against the back wall, reflections off that wall were harmful. Pillows again.
Speakers sound too bright.
I just bought a new pair of Martin Logan 60xti speakers. They are too bright and fatiguing. I would like to avoid returning them. I've tried toeing them in and out. I cant get them further than 1ft away from the wall (back of speaker to wall). I have a about 1-2 hrs of play time on them. Not sure if break in will help settle the upper frequencies down. Any suggestions...?