The characters Set the SRC manually CIRRUS LOGIC CS4398 DAC chip CIRRUS LOGIC CS8422 SRC chip 3.7 V battery, SNR up to 108 Db, THD lowers than 0.003% The precision of 0805 resistance is up to 1% in the simulation Black 3U PCB 3U Gilt RCA interface for SPDIF IN/OUT (top grade) 3U Gilt interface for 6.3mm earphone (top grade) The rate of the Jitter is lower than 5ps