The semiprofessional, closed-back K 81 DJ Headphones provide impressive sound quality and high output capability. A 3D-Axis folding mechanism allows the K 81 DJ Headphones to fold into a small package that takes almost no space in your bag. The closed-back earphones provide optimum isolation from ambient noise while the high SPL capability ensures excellent sound quality. The ruggedly constructed K 81 DJ's comfort level is as impressive as their powerful low end and accurate imaging.