And why is that, have you ever listned to one :/
I live with a Violenist and I find the timbre on the DT 880 to be spot on
and if your are a Musician OP... try the DT 880, it's a very natrual headphone and I personally enjoy it for classical.
Tbh though I listen to a lot of Duets, small band classical pieces such as Sonata for Cello & Piano No. 2 in G minor, Op. 5, No. 2 - III. Rondo (Allegro) with Anne Gastinel and Francios Fredic Guy.
I've got some Tchaikovsky Symphonies as well,
I have owned the 990 and the 770 and heard the 880 in a shop some time ago. I find the treble to be particularly emphasized above level in all models. Good for monitoring though and of course one could get used to that sound over time, but I don't see why our friend need to do that when there are other alternatives.
Also consider what he preferres:
" For my listening taste:
- Very rich sound ( especially bass)
- NO dry sound (live acoustic)
- Between Bright and Dark sounding, but a bit more towards dark."
I think you will have a hard time finding anyone who would think the 880 fits that description.