AKG engineers continually strive to integrate improvements in performance and durability while carefully maintaining the K240M's familiar sonic signature. The AKG K240 Studio Headphones use an "integrated semi-open air" design which incorporates a highly accurate dynamic transducer, and an acoustically tuned venting structure behind the element produces a naturally open sound quality. The circumaural (around-the-ear) pads are designed for hours of wearing comfort, while the steel cable, self-adjusting headband construction and single-sided professional quality audio interconnect ensure extended reliability in demanding professional studio applications.