Just upgraded from a pile of Fiio (E17+E09K) to a pile of Schiit (Valhalla 2+Bifrost USB Gen2, w/o uber) to drive my T1 No.23xx.
Listening to classic or soundtrack definitely improves; female vocal is great too.
But I just start to listen to metal, Chthonic that is (usually categorized as black metal, but themselves called it "orient metal").
The Schiit pile with metal is somewhat.... cool? Yeah the sound stage and separation is much better than the Fiio pile, but the players seems to be more distant from me too, with less passion.
It helps to hear the layers of sound in metal, but the atmosphere and intimacy somewhat loses in the process.
I've ordered the uber analog but has not arrive yet. Fingers crossed