The sound quality, including the parametric equaliser, and library, is astonishing.  From the app, I can watch the squig change, and hear the sound change, as I change the Eq, and, it the response is true.  Astonishingly good.

The case design, of course, is very very not good..

The noise cancelling, equally.  At higher frequencies, e.g. snapping shut the (separately purchasable) magnetic lid, the "snap" noise is actually louder through ANC, than IRL..  Huh?