Audio-Technica ATH-T44 closed-back dynamic stereo headphones give you superior sound and comfort. Their secure ear-fitting design results in excellent isolation, and sophisticated driver technology produces remarkable acoustic performance with an extended frequency response and full, rich balanced bass. Feature proprietary 40mm drivers with neodymium magnet systems and Copper Clad Aluminum Wire (CCAW) voice coils for superior sound reproduction. Self-adjusting lightweight headband, generously padded ear cushions, and rotating earpieces allow for comfortable, versatile listening. 18Hz-23kHz frequency response.