I tried it again today. Again nothing changed first place. But then I checked Clear audio + while I had music playing to make sure that the sound app is really disabled. Again the sound did not change at all. So the sound app was offline. But then it happened. I unchecked the useless Clear audio + stuff and the volume increased dramatically. Had to turn down from 80% to 30%. Wow that's amazing. All was done with my 250 ohm Beyer DT 1770.
10/11/15 at 2:01pm