Sennheiser HD 560S vs Sennheiser HD 620S

Though they look similar, the biggest difference between the Sennheiser HD 560S and the Sennheiser HD 620S is that the former are open-back and the latter are closed-back headphones. As a result, the HD 560S supply a much more immersive sound. They're also lighter in weight, and they deliver a more consistent sound. Of course, they don't isolate noise like the HD 620S. The HD 620S are slightly more premium in build with a metal-reinforced headband, but they clamp tighter. Their fit is much more fussy and is more likely to deliver inconsistent sound. Overall, they provide a fuller, but less even, bass response, though that depends on your taste.