SMSL High-end DAC SD-650 Coaxial/Optical/USB Input + Headphone Amplifier Silver SMSL SD-650 uses chipset: CS4398-CZZ, DIR9001 TE7022L, OPA2604, JRC5532DD SMSL SD-650 is built-in MCU control SMSL SD-650 has built-in headphone output switching circuit, do not need to frequently plug the headphone plug SMSL SD-650 supports 24bit/96khz