I recall this article from back in 2013: https://www.technologyreview.com/s/512496/first-graphene-audio-speaker-easily-outperforms-traditional-designs/   Highlight:   To me this is incredible. How much better would this technology be when actually paired with specialised acoustic design...

My audio setup is a very simple M50X + Asus U7. They sound pretty good with iTunes with Apple Music (90+% of my listening) and I leave the rock EQ setting enabled as it seems to work acceptably well with any genre. I also listen to SoundCloud, and these headphones have absolutely phenomenal bass...