Thoughts on the most difficult instruments for speakers to reproduce?


I’ve heard a number of speakers over the years, and the sounds of some instruments never seem as realistic as others. I would love to get some opinions on this, as I’ve been wondering about this for years.

My my vote on the toughest:
- Trumpet with mute (good example is Miles Davis)
- Alto sax
- violin (higher registers)

Thx!




glow_worm
My bane is the human voice going from soft to loud (dynamics) or vice versa. There has always been a "shadow" made of distortion that parallels the transition. A corruption of the air coming out of the singers mouth? I can't explain it but I always hear it.
I don't think any one instrument is that difficult compared to complex orchestral pieces.  That's why you will rarely, if ever, hear orchestral music played at shows.   It's always something simple like Bach cello suites, Musica Nuda, some "girl and guitar" stuff.  Well, not always, but most of the time.  
Is there a definitive answer? Or is it all of the above / prior? Thanks.

@nonoise Nice to see your mention of Upright Bass and Oud.
I find most speakers having difficulty presenting the size of the piano on the stage same with vertical instruments like double bass. The sound may be close but the overall experience is not very real as the fingers move up and down the neck.