SMAKN&reg; Brand New HiFi 24bit USB DAC digital sound card CM108AH 192khz digital to analog converter ELNA/NICHICON/ NIPPON-CHEMI and EVOX audiophile grade capacitors. LM317 high precision regulator from ON-semiconductor or TI 1.6mm thickness FR-4 fiber-glass PCB board. Sliver coated RCA/coaxial terminals. 10PPM high precision oscillator.