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. EqualMass Diaphragm Technology Engineered for Extreme Accuracy The all-new Edifier EqualMass diaphragm technology combines trusted and iconic components, including the Audeze Fluxor magnetic structure, Uniforce diaphragm, and Fazor™ phase management, accurately reproduce the original sound. Uniforce Diaphragm 0.5% Imperceptible Distortion The Uniforce technology is designed to achieve and deliver uniform driving force to produce unparalleled acoustic details and accuracy with the distortion to imperceptible 0.5%. Fluxor Magnetic Structure Higher Definition and Wider Frequency Response The Audeze Fluxor magnetic structure technology and customized neodymium magnet produce double the flux density of traditional magnets and provides unparalleled efficiency. Fazor Phase Management How It's Meant to Sound With Fazor, sound waves generated by planar magnetic diaphragms pass through magnetic structures without disturbance, preserving timing details in the recorded signal. This ultimately results in cleaner sound, greater resolution, and better imaging. Hi-Res Audio and Qualcomm Snapdragon Sound Combination of Snapdragon Sound audio technology with planar magnetic headphones for ultimate listening expericence. Qualcomm aptX Voice Crystal Clear Call Guaranteed The Qualcomm aptX Voice audio technology largely improves the signal-to-noise ratio, delivering 32 kHz voice call quality. Multi-Point Connectivity The STAX SPIRIT S3 can be paired with two different Bluetooth devices effortlessly switching between music, gaming or phone calls. Explore with Edifier Connect App Classic STAX EQ and More Get access to the classic STAX sound effect and low-latency game modes through Edifier Connect App. More EQ options, modes, and extensive functions are available via the App. 80 Hours of Ultra-Long Playback Get 11 hours playback time with only a quick 10-minute charge. Your ultimate travel buddy! Replaceable Earpads All-Day Comfort Guaranteed The STAX SPIRIT S3 comes with replaceable lambskin leather earpads and cool-mesh breathable earpads for comfortable long listening sessions. Connect Any Way You Want In addition to the Bluetooth 5.2 connection, the STAX SPIRIT S3 also comes with an Aux-in cable and a 3.5mm to 6.35 adaptor for wired connection.