Hear the depth of bass you've been missing in your music. The ATH-WS99 Solid-Bass headphones deliver incredibly full and textured bass, along with the astonishing clarity and fidelity for which Audio-Technica is renowned. A-T's innovative Double Air Chamber System extends bass response without compromising mid- and high-frequency content. Precision machined aluminum housing eliminates undesired vibrations for powerful sound reproduction. The headphones feature 53 mm drivers for powerful sound and efficient signal transfer. The headphones come equipped with two 2.6-ft. (0.8 m) extension cables, one with an inline mic, playback and volume controls for smartphones and other compatible devices.