MacBook Pro streamer

I already have done that but, again my Mac doesn't detect the device.
Thank you.

Have you played with the "Audio MIDI Setup" control panel?  Do a command+spacebar to search for it.

If you getting it working, consider purchasing the "BitPerfect" app for $10.  Really made the USB sound out of my MBPs much better.

Then once you are ready for more, consider a step up to a Roon Nucleus or other server.  The sound was clearly better (lower noise floor) than two different MBPs+BitPerfect.  Install and run Roon on your MBP first to see if you like it and if it is worth the money to you.

While USB works well when using a dedicated streamer, it seems to work less well coming out of a computer.  USB tends to pick up a good amount of noise from the computer.

Before I moved on to dedicated streamers, I bought from Schiit Audio a USB>SPDIF converter and used that for input into my DAC. For about $120, it gave a noticeable improvement in sound quality for me, and it also solved some communication errors like you’re experiencing. As I recall, they also have a nice return policy.  

Good luck. 

Does it need a special Ayon CD-35 USB driver... I can’t get the manual from the Ayon web site without a password... There is a USB driver there and I did not try to access it...

What player software are you using to access the Ayon with? Something like Roon or Audirvana?

Is all good. The USB port from Ayon is bad. Shame for such an expensive toy. I send it back to be repaired. I'll keep you posted. Thank you all for the inputs.