HE1000 V2 Planar Magnetic Open-Back Headphones from Hifiman have been revamped: thicker asymmetrical earpads, stronger cable, and polyester earpad surfaces for increased transparency. Boasting diaphragms only nanometer thick, they have 8 Hz to 65 kHz frequency response and 35 Ohm impedance. Headband fits a wider range of heads, and the weight is reduced to 14.8 oz. Earcup design slimmed down to 11mm, earpads thicker and asymmetrical. Cable crystalline copper/silver, wide freq. range, low signal loss, enhanced bass. Includes 1/4", 1/8", and 4-pin XLR cables.