It could be at least partly due to a bright recording of Aerosmith. Many rock recordings are a bit thin and shrill IMO.
I'd be more inclined to try some tube rolling or swap some cables before replacing the amps.
Best monoblocks for Tannoy Legacy Arden
I have a pair that have been breaking in under blankets for about 400 hours. Currently I'm using Prima Luna Evo 400 amps. Audio Research ls28se Pre,Audio GD r7he mkii dac, Lumin u1 mini with sbooster. Kimber d60, Harmonic Technology Truth link xlr on both amp and pre. AQ Rocket 88 speaker cables. With the right music and recording they sound fantastic. But if I put on something like Aerosmith the treble energy shreds my ears and it just sounds harsh. I have the plugs set on the lowest Setting for treble and roll off. What amps might work best to get the best overall sound from all recordings? I'm all over the board on music. Don't listen to orchestra or chamber music. Thanks for all suggestions.