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 40 mm (1.6 in.) speakers provide a superbly natural, uncolored sound. When you are listening to an MP3, you can expect comfort and sonic accuracy from your HD651 headphones. HD651 comes multicolor options and allow you to pick up one of your favorite color following your feel.