Pocket HiFi C4 Pro

The Specifications

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