Brief: The Massdrop x Sennheiser HD 6XX is a success story unlike any other from Drop, having sold in excess of 135,000 units in 4+ years. We find out if there is still room for the HD 6XX and, by extension, the Sennheiser HD 650 in 2021, both as a reference set of headphones and purely for music and general purpose listening.



Link: Techpowerup