S.M.S.L SU9 ULTRABoth USB and SPDIF support MQA and MQA CD; Using AK4191+AK4499EX to play the full performance of Chips, the distortion is as low as 0. 00006%( 124dB); XMOS XU 316, true 32bit USB processing, supports DoP and Native DSD, and PCM reach up to 768kHz and DSD512; The newly self developed CK 03 clock processing circuit greatly reduces the clock jitter; USB, Optical and Coaxial support DSD transmission, Coaxial, Optical support DOP64; Use tempered glass