Finally it seems W-DAC shows superb and most of all consistent performance across boards. I needed to have a break for a few months from all of this as I got quite frustrated after manufacturing a batch of boards and then not meeting the performance I’d seen in tests before.
PCM I2S to S/PDIF digital audio converter to convert I2S serial audio data to S/PDIF with coaxial, Toslink, or AES/EBU connection.
Audio ADC with superb performance figures in a compact form factor. Suits audio recording kit, Hifi systems, or audio measurement applications.