If you're looking for open-backed headphones with big bass then Sennheiser's second-gen HD 660S are well worth a look When you purchase through links on our site, we may earn an affiliate commission.

Learn more Sennheiser's HD 6XX wired headphones offer unmatched ... Of the ones not already mentioned above, the HD 560S ($230) and HD 660 S2 ($600) are the most compelling. The problem is that ...

That’s an impossible dream, isn’t it? Not according to Sennheiser. With the HD 620S, the company has introduced a closed-back design into what has, until now, been a range of open-backed ...