2 Only 60% of the first-gen diaphragm thickness New Composite Headband Weight reduction of 20-30g with rotatable hinges for enhanced wearing comfort, New 3., 5mm sockets HIFlMAN's new 3., 5mm sockets are similar to those found on most common audio devices., The supplied 3., 5mm cable is user changeable and replaceable. The Edition XV, HIFIMAN's $400 successor to the Edition XS, is potentially the most important headphone release in the last decade of the audiophile headphone hobby... or at least, Listener thinks so. Read to find out why Frequency response: 8Hz-50kHZ , Impedance:12Ω , Sensitivity: 92dB , Weight: 452g , Dual Enhancements. About HIFIMAN Founded by Dr. JUST LAUNCHED: HIFIMAN HE600 and HIFIMAN Edition XV – The HFMan Edton XS Revew Using Rare-Earth-Free permanent magnetic materials with an optimally designed structure, materials to achieve asensitivity that's comparable to drivers with Rare-Earth magnets Neo Supernano Diaphragm Gen. Edition XV, The Evolution of a Masterpiece , Dual Enhancements. Open-back Planar Magnetic Headphones New Hifiman Edition Xv Edxv Planar Flat Headphone Headset Fullsize Over Ear Wired Hires Hifi Monitor Diaphragm For Audio Fever I.1387837212 Focal Headphones Neo Supernano Diaphragm Gen., 2., Only 60% of the first-gen diaphragm thickness , New Composite Headband.