HD651 presents accurate and rich bass, and excellent vocal sound. These closed-back headphones combine excellent sound with optimum price/performance and it is the best practical choice for a music lover and artist. The patent self-adjusting headpad construction, soft, circumaural leatherette ear pads, and low weight ensure a perfect fit. Powerful 40mm (1.6in) speakers provide a superbly natural, uncolored sound. Where you are monitoring or just listening to an MP3, you can expect comfort and sonic accuracy from your HD651 headphones. HD651 comes multicolor options.