The K550 offers a commensurate balance between the noise-isolating qualities of closed-back headphones and the spacious, dimensional sound of an open-back design. With 50-mm drivers, these earphones offer outstanding sound and are suitable for enjoying music at home or on the go. The large ear cups and a new headband design ensure a comfortable fit. With the 2D-axis mechanism, the headphones can be conveniently folded flat for transport.