Get a good pair of headphones for several reasons. You don't want to be that horrible roommate that blasts music all day. You probably will need to drown out some unwanted sounds in the middle of night--or the afternoon in my own personal experience. Last, you can let your roommate borrow if they are the ones blasting music and they claim they don't have a pair.

These headphones are backed by the Sennheiser brand, which means optimal quality. The have high efficiency drivers and a wind up belt clip so you don't have to worry about extra cable.