My current headphone is the Sony xb500 and mi budget is 300$ but I can manage to put it up to 350 if necessary. I listen to alot of hip hop/rap music( mostly old scool ) from my itouch 4 so I need good bass. I researched alot of headphones and I'm stuck between getting these
Ultrasone pro 900 (349$)
Akg k550 (299$)
Denon d2000 (299$)
Sennheiser hd600 (290$) used
and Grado sr325is (299$).
I know some of these need a good amp to be used so if any of you have any suggestions about that to it would be really helpfull.






















