Bought one of these DAC/Headphone Amps a few weeks ago from a private seller:
Everything worked wonderfully until today when I noticed that only one channel was working on the USB/SPDIF (Digital) side over the headphones and out from the RCAs. However the Analog side is working fine with a source attached to the Analog RCA pots.
Any idea what could have gone wrong? Any help with this would be greatly appreciated.