Sennheiser HD 660S2 $599 Review

While a new HD 600 headphone is always big news in the audio world, there’s a lot more competition in the sub-$1000 headphone space since the time the original HD 600 headphone ruled the roost as a flagship product.

Relative newcomers like Hifiman and Meze Audio have recently put out some excellent products in this price range. So does the HD 660S2 have what it takes to mix it up in this competitive segment? Read on, and I’ll give you the scoop!