The HE1000 v2 is one of the best headphones available. Store demo, very good condition - tiny marks on the metal if the light is at the right angle and you look closely (macro zoom on the camera). From 2ft they look new. Occasional brief demos over the past 2 months. Boxed, complete, feed them with a high quality powerful headphone amp and they sound wonderful!
The HE1000 v2 have a large, long earcup with new earpads, angled front to back, with more room at the rear of the earcup for your ears. The lighter weight, coupled with Hifiman's new soft headband and low clamping design make for a very comfortable listening experience. With a sensitivity of 93 dB and ultimate resolution, they present a medium difficulty to power and to fully enjoy their capabilities they will partner best with a headphone amp of similar quality.
From Hifiman: World’s First Diaphragm in Nanometer Thickness - The diaphragm is extremely low in mass, yielding faster response and lower distortion. The double-sided, asymmetrical magnetic circuit places less material in front of the driver providing improved performance.