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.

With depth, dimensionality and comfortable ear cups, these open-back wonders change the game for affordable hi-fi ...

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 ...