If you're mostly tuning into types of music like classical or ambient, then you won't need a subwoofer. However, if you prefer listening to more bass-heavy tracks such as hip-hop or metal, then a subwoofer can make a massive difference in the overall listening experience. It will add an extra layer of depth to all the genres that feature prominent sub-bass. So depending on the genres you are playing, the need for a subwoofer may vary drastically.