Beyerdynamic is no stranger to the professional audio scene, so you’d be forgiven for expecting a lot from these cans. The DT990 Pros are open-backed, meaning they leak sound quite a bit, but they make up for it in their incredible stereo detail as well as their crisp and tight mid and high response. They are bright but not harsh, thick but not cloudy, warm but also sincere, and in terms of comfort they are a joy to wear for long periods.
The nature of open-backed headphones means that the sub response isn’t huge, so if you’re looking for high-end multimedia headphones and nothing more, or if you make very bass-heavy music, the DT990 Pros might not be for you. That’s not to say the bass response isn’t true, though.
Their leaking will definitely bother fellow passengers on a bus, train or plane, but for mixing duties indoors - in or away from the studio - or for outdoor iPadding in the park, they are very hard to fault