I borrowed that off @prof. He has written some excellent posts here and is usually very precise when it comes to describing timbre and tonal colour reproduction.
Even after nearly 40 years of listening to various systems I still think that instrumental colour is one of the most difficult things for any of them to reproduce.
So many of them nowadays just cannot get close. Or even seem to try.
As much as it pains me to have to give Apple any credit I cannot fault the iPad 2 on the grounds of failing to reproduce timbre and instrumental colour.
There's an app on there that features some 60 musical instruments that my kids would sometimes play with.
The tonality would be almost uncanny, and that tiny speaker could certainly put many a full size one to shame.

