i'm wondering why a FiiO 3DK external DAC is working on HifiBerry Digi+ (transformer version) without problems and with a DIY DAC (CS8412 receiver circuit and a TDA1545A DAC chip) the sound is distored over S/PDIF coaxial ?
On the other hand my DIY DAC and the FiiO 3Dk is working without problems on a "standard" CD-Player.
Is S/PDIF from HifiBerry Digi+ different to a S/PDIF from a "standard" CD-Player ?
Maybe it is a grounding problem or something else ?
Distored sound with external DIY DAC