The Pursuit for the Real Sound Revives the Legendary STAX SPIRIT embodies the spirit of craftsmanship of STAX to produce state-of-the-art Audio products. S3 is the first in a series of high-end headphones under the STAX SPIRIT product line of Edifier. An Audiophile-Grade Audio Experience Get next-level high-fidelity audio perfect for every music audiophile, both passionate and professional. Ultra Low Distortion Planar Magnetic Drivers Compared to traditional dynamic driver headphones in the market, the STAX SPIRIT S3 comes with advanced planar magnetic drivers that lower audio distortions and wider dynamic responses. Equal Mass Diaphragm Technology Engineered for Extreme Accuracy The all-new Edifier Equal Mass diaphragm technology combines trusted and iconic components, including the Audeze Fluxor magnetic structure, Uniforce diaphragm, and Fazor phase management, accurately reproduce the original sound.