Beyerdynamic DT 900 PRO X hurt my head

Hi i recently got the Beyerdynamic DT 900 PRO X. But i cant stand to have them on for more than 30 minutes. It hurt the top of my head so bad. Before these i had DT 770 PRO 250ohm, and they were perfect. I spent 250USD on these and dont have the packaging so i cant return them...

Anyone knows a suppliment product, that could help or something?