Legendary octa-core Snapdragon 660]: In the M11S music player is a Snapdragon 660 with a 4 big / 4 small core architecture plenty capable of providing a smartphone-like smooth experience. [670mW high power output]:Under a 32 ohm load, single ended power output is 167mW while balanced power output is at a healthy 670mW [Dual ES9038Q2M DAC design]: Excellent performance, supports up to 384kHz/DSD256 decoding.