The Audio Technica ATH M20 Headphones offer exceptional clarity and maximum comfort for hours of listening. The headphones" low-profile, closed-back design provides superior isolation in high-volume listening situations. The ATH M20 Headphones also features 40 mm drivers, each with a neodymium magnet structure; lightweight, adjustable cushioned headband; gold-plated stereo 1/8-inch (3.5 mm) connector with strain relief and snap-on 1/4-inch (6.3 mm) adapter; ultra-flexible 10-inch coiled cable with left side connection.