Dear all,
I’m making a new DIY project for a digital audio player with good quality SPDIF output.

I decided to use the following configuration
- BeagleBone Black with Volumio
- TPA Hermes-BBB Isolator Module
- TPA Cronus Re-clocking Module
- TPA S/PDIF TRANSCEIVER MODULE (WM8804) to convert the I2S signal to SPDIF.

First of all I would like to know if this kind of solution can provide an high quality digital output.
Second point is to ask some help for the correct working of the project.

I assembled all components and configured the spdif transceiver module as described in the manual for i2stospdif

AIF/MS 1
TXSRC 1
AIFCONF1 0
AIFCONF0 1

Powering all boards:
- 5v on Hermes (the hermes gives the power to BBB)
- 5v on Cronus
- 7.5v on SPDIF transceiver

no output sound.

Then I changed the configuration as below:

AIF/MS 0
TXSRC 1
AIFCONF1 0
AIFCONF0 1

and the signal could lock with dac.
Unfortunately the quality is not good. several clips and audible distorsion comes out. Moreover I can't manage the volume through the Volumio Webapp. It seems the too high level creates big distorsion.

Do you have any suggestion to improve my project?

Thanks a lot,
Marco.