Beyerdynamic DT-660 Circumaural Closed Back Hi-Fi Premium Stereo Headphones, 5 to 35,000 Hz Frequency Range, 32 Ohms Impedance

The Beyerdynamic DT-660 Hi-Fi Stereo Headphones feature a closed back, circumaural design, providing a high 97 dB of ambient noise attenuation. The fully adjustable earcups and headband are comfortably padded and the proprietary bass-reflex design, with a thin, sensitive diaphragm, ensures unusually extended and accurate low and high end frequency reproduction, with a quick, distortion-free transient response.