Akg k240 mkii studio headphones akg harman k240mkii these professional semi open headphones from akg are a long time standard in studios in orchestras and on stages around the world its advanced varimotion 30mm xxl transducers deliver solid low end accurate mids and crystal clear highs the semi open design provides the airiness of open headphones with the powerful bass response of closed designs br br for more than three decades professional engineers and musicians have made the k240 t