Since 1945, German-based Sennheiser has been the undisputed design leader of fine headphones. is proud of our strong relationship with Sennheiser since 1995. From making the world's first open-back audiophile headphones -- the legendary HD414 -- to the 2009 release of the revolutionary HD800 and now the HD800S, Sennheiser continuously pushes the boundaries of audio quality and product innovation. is Sennheiser's leading North American retailer for the original HD800, and today we're pleased to offer varied Sennheiser models including open back, closed/sealed, in-ear, earbud, wireless and noise-cancelling types.