Product details:

The AKG K 550 MKIIs deliver excellent sound quality, with a 50mm driver, the largest AKG offers in its headphone line. Thanks to their closed-back design, true AKG sound can be enjoyed without disturbing others. The K 550s large ear cups and newly designed headband offer an amazingly comfortable fit. 2D-axis folding mechanism for easy storage at home. A reference class headphone at an attractive price.