The AKG K 121 Studio are entry level professional headphones for various applications, as Project Studios and Home Recording. These semi-open, supra aural headphones are a true allround performer. The AKG self-adjusting headband ensures good comfort. The K 121 Studio is equipped with a 3.5/6.3 mm stereo adapter and is designed for ambitious and rugged use. The leatherette ear pads are easy to clean.