The 8.8 mm Dual Symphonic Drivers of the ATH-LS70iS âLive Sound" in-ear headphones let you move through your day with the sonic realism of a live concert filling your ears. The two 8.8 mm drivers are serially situated within each housing and driven simultaneously to reduce diaphragm distortion and generate a balanced sound with deep, rounded bass and clear mid and high frequencies. The drivers' diaphragms are also carbon-coated to add power and precision to the bass and extend frequency response. The housings are constructed of durable ABS resin that helps to reduce unwanted resonance, and the eartip posts are angled to provide a comfortable, sound-isolating fit. Within the posts are specially designed acoustic sound pipes, fashioned from stainless steel and high-durability resin, to guide the music to your ears with improved high-frequency response. The ATH-LS70iS comes with a detachable 1.2 m (3.9') cable with A2DC (Audio Designed Detachable Coaxial) connectors at the headphones for exceptional durability and audio performance. The cable is equipped with an in-line mic and controller for handling phone calls and music and video playback. The flexible memory cable loops around the ears for a custom fit that is enhanced by the four sizes (XS, S, M, L) of included eartips.