GUSTARD DAC-X20 XMOS HiFi DAC 384KHz DSD DOP Decoder with USB XMOS 32bit/500MIPS,XMOS 32bit USB receiver chip which is best performance asynchronous USB audio solution Analog circuit use High-end discrete lines 2 x ESS Technology ES9018 Sabre Reference 32bit Adopt more humane modular XMOS USB daughter card