It seems like a malfunctioning unit.Have had to return mine... 2 main issues.
USB too much noise. Never had issue with USB noise issue on any DAC but with DO200, I am constantly hearing tick tick sound while playing the music. This is same cable and same port on my PC and not sure why but have had so much issue. Uninstall driver and all that didn't help...
2nd issue was with I2S. When changing the input to I2S, only right chanel has sound and no sound was coming from left chanel at all. Once you turn if off and turn it back on, then i have not had any issue at all. This only happened when you change inptu after device is turned on. Suspect that I am using non-default I2S pinout setting on the device could be the cause?
Seller will test once they receive it and let me know but hopefully I received dodge unit...
The USB input is dead silent and the I2S is playing music seamlessly.
The only issue with I2S is that sometimes I don't get the sampling rate displayed.