I listen to music 8-16 hours everyday as its kinda my job so...
I wanted some good headphones, which could be both end-tier and at an affordable level. I added a little DAC to these and connected them to my PC. Music is amazing, and I just cant explain it, I had previously a 100$ Headphones with Bluetooth and pretty good, but this was a revolution. Also its perfect for long usage. Sound quality is amazing. I can listen to all kinds of music, from Deep Base to Super trippy Psychedelic music with 40 instruments going at the same time and if I close my eyes, I can listen to each of them. Of course, music needs to be good otherwise we are talking having a rocket-ship without engine.
The only cons I found out, is that no matter what I did, after a 2-3 hour session I need to change a little the placement in my head as it starts to get heavy, which didn't happen with the other cheaper headphones. Probably because these are heavier and that in PC session, slowly , even though the cable may not be very heavy, it can create tension.
Anyway, its easy to change the matte above and pick something more comfortable, but I don't think I will need as its advisable that max 1 hour the person needs to stand up and move around after staying on the chair for 1 hour straight, so maybe this isn't very much a Beyerdynamic problem but mine as I overstay on my line of duty & everything gets inertia after not moving for 2+ hours.