Audeze LCD-1 Open System, Headphones, Open-back design, Circumaural, Foldable, Ear-cushions made of genuine lambskin, Magnetostatic transducers, 90 mm driver, Detachable, double-sided cable (just 1.9 m), 3.5 mm Jack plug with gold-plated plug adapter to 6.35 mm, Sound pressure level: 99dB SPL / 1mW, Maximum level: 120dB SPL / 5W, Impedance: 16 ohms, THD