The SHP-940M are closed, circumaural, dynamic stereo monitoring headphones with 50 mm neodymium drivers and a frequency range of 10 to 35,000 Hz. They provide passive attenuation of external noise and reduce sound leakage. Features include a padded adjustable leatherette headband, soft circumaural ear pads, a single-sided cable, 32 ohm impedance, 99 dB sensitivity, and 3.5 mm and 6.3 mm stereo jack connections.