These Yamaha RH5MA headphones are the undisputed headphone choice for professionals. The ultimate in comfort with urethane leather earpads, these headphones are the semi-open dynamic stereo-type and the choice for studio monitoring. Frequency Response: 20 Hz - 20 kHz, Impedance: 32 ohms, Sensitivity: 98 dB / 1 mW, Jacks: 1/8" Plug and 1/4" Adaptor, 8' Cord