The K181DJ Headphones have been designed in cooperation with leading international DJs. The 3D-Axis professional folding mechanism allows the DJ to change their monitoring position quickly at the club. High quality lightweight construction, extremely rugged. Headphones fold down into an extremely thin package for transportation .The result: the ultimate tool for professional DJs - high performance closed-back headphones with the best possible sound, and maximum SPL that should be exceptionally rugged and easy to bend or fold into any listening position, and provide a switchable bass boost.AKG