Sennheiser HD 660S2 review: A legendary reference can at a premium price
These are the latest version of Sennheiser’s long-running HD 660 series of open-back reference headphones, the new HD 660S2. They’re a bit of a “holy grail set of headphones” and I should probably pass on them now, especially given their price – £499 in the UK and $600 in the US. That’s an incredible price ...
