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.   Features These headphones feature an ultra-thin diaphragm for a lightning-fast response, uncanny detail, and ultra-low distortion. Their 90 dB high sensitivity allows virtually any smartphone or portable audio device to deliver low distortion and professional sound quality. They have a window-shade grille design that greatly reduces sonic reflections for clearer sound. The headphones have a lightweight, ergonomic headband for a better fit, improved sound, and better comfort for longer-term listening. They have been designed to accommodate a wider range of head sizes. Their Asymmetrical earcups follow the natural shape of the human ear and have been updated from the original 14mm in thickness to 11mm in thickness They have a user-replaceable connector-cable design that allows for easily switching to or from other cables The weight of the HE1000 V2 headphones has been reduced to 14.8 oz. The original HE1000 headphones weighed 16.9 oz The supplied cables are made stronger by incorporating crystalline copper and crystalline silver wire. They are custom designed for wide frequency range, low signal loss, and enhanced emphasis on the low-end for quality audio reproduction The earpad surface that makes contact with the head has been changed from velour to polyester to increase sound transparency