Hifiman edition x v2 planar headphones ultra high performance ultra high sensitivity ultra high experience with a low weight amazon 103db sensitivity the hifiman edition x v2 headphones break new ground in performance style and comfort for planar magnetic headphones the edition x headphones feature an ultra thin diaphragm for a lightning fast response rate providing an uncanny amount of detail and ultra low distortion winner of the 2017 ces innovation award headphone category compared to tra