FeaturesAudio-Technica's new 2004 ATH-AD900 Air Dynamic headphones that gives you high quality sounds with deep balanced bass. With unique self-adjusting bearing armband (world's first) with newly developed 3D "wing support" which allows comfortable and enjoyable listening experience. Features a large 53mm aperture driver made with bobbin winding CCAW voice coil for superior sound reproduction. Designed with light weight aluminum honeycomb casing with a total comfort around your ears | 
