Beyerdynamic DT 770 Premium 32 OHM Headphones (Discontinued by Manufacturer) Stereo Headphone MP3, iPhone, iPod and home audio applications, analytical, true sound reproduction Excellent ambient noise attenuation for no disturbances Closed, dynamic headset, Frequency response of 5 - 35,000 Hz Single-sided cable with gold vaporized stereo mini jack & 1/4" adapter, includes carry case