Sennheiser HD 650 vs Sennheiser HD 598

The Sennheiser HD 650 and the Sennheiser HD 598 are very similarly-performing open-back over-ear headphones. The 598 are quite a bit more comfortable, thanks to their better padding, and less tight-fitting design. Both headphones are quite well-balanced and accurate, though the 650 are more accurate in the bass-range, as the 598 are slightly over-emphasized in high-bass. The 650 also feel a bit better-built and durable.