Just received them… and I thought my HD280 Pros were more or less the most detail I could hear from any pair of headphones… damn, I was wrong.
https://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality
I took this test and, for the first time, I’m shocked to find the wav files instantly. Like, “woah, here it is”. Even when the one I clicked before was the 320kbps mp3. 
And they’re open-back. And the window of my room is open. And I’m half asleep.
Well, holy shit. 