The AKG K 240 MKII Professional Stereo Studio Headphone is a newly updated version of AKG's most successful headphones with Varimotion technology and XXL transducers. The K 240 MK II's semi-open ear cups have around-the-ear coupling to deliver solid bass, accurate mids and crystal-clear highs. Because of its lower impedance and improved sensitivity, it can be used with low-output audio sources to deliver its incredible sound. The detachable OFC cable has gold-plated plugs for optimum audio quality and exceptional ease of service.