Got it yesterday. Hooked it up last night. Wife on the couch with me paying bills (she is not nearly into this stuff as I am, and has no clue what this amp cost). First up: Seal's Kissed by a Rose (acoustic version). I heard percussion instruments I had not heard before. But, maybe I was just paying more attention? I turned my head to ask my wife, when she blurted out "I can totally hear the mirimba. that was NOT there before!!" She put the bills down.
Next up, Keb Mo's Closer. Again, incredible detail. Again, I turned me head to get the wife's feedback. She had tears dripping off her face. She says: "do NOT return this amp!!" This is one of her favorite songs, that she's heard numerous times.

I could tell you more, but that's that pretty much sums it up. And were listening a "moderate levels" as the kids were asleep.

M80v2, VP150v2, QS4v2, Onkyo 805, ADA1500-3, Sonos