Hear music that stays true to the original recording with High-Resolution Audio. Optimised for High-Resolution Audio, S-Master HXTM reduces distortion and allows you to enjoy all the subtleties in your music,These headphones also include a powerful 40 mm driver with Liquid Crystal Polymer (LCP) diaphragm for handling heavy beats, and can reproduce a full range of frequencies up to 40 kHz,The Digital Sound Enhancement Engine HX (DSEE HX) upscales compressed digital music files (MP3, ACC, ATRAC and WMA) and takes them closer to the quality of High-Resolution Audio. By restoring the high-range sound lost in compression, DSEE HX produces your digital music files in rich, natural sound,LDAC transmits approximately three times more data (at the maximum transfer rate: 990 kbps) than conventional Bluetooth Audio, which allows you to enjoy High-Resolution Audio content in exceptional sound quality close to High-Resolution Audio.