Beats by Dre Bass issue..?

Audio is pretty subjective. Not that there can't be objective parameters by which headphones can be compared, but that still doesn't dictate what a listener likes and what he likes to like.

Regardless, you'd want to check the identity of your sound card, update drivers (if any), use a proper media player (e.g. VLC) with equalizer and meddle around for any improvements. Cross check with other headphones. Cross check with other songs/music genres. Cross check everything to find the culprit.