I REALLY don't like these headphones. They have nice detail in the mids and highs, but the bass is just bad and resonates in the cups at 70 to 90. They hurt my ears, physically and acoustically. Live and learn. You get what you pay for. These cans are nasty. Very forward in the upper mids like bad old JBLs, boomy mid bass, no depth. I don't get it.
Sounds like yours aren't broken in yet. I've always been a little dubious about burn-in having any effectiveness, but it did make a difference on these headphones.