The ATH-AD700 Headphones from Audio-Technica are open-air headphones that offer a completely natural listening experience. Its lightweight honeycomb aluminum casing and magnesium frame structure minimize pressure on the ears. The sound is smooth and relaxed, with deep resonating bass and vocal projection. The self-adjusting wing support automatically adjusts to your head size for easy-wearing listening comfort. A straight cord at the left earpiece terminates to a mini plug with included 1/4" adapter.