Not getting any sound via Tact digital amp

I have a Tact 2.0S and S2150 rig. it is capable of receiving 16 to 24 bit and 44.1 thru to 192 kHz
I cannot hear any sound coming through the this. The Tact rig knows there is a signal because it says 44khz signal.
However when using the HDMI signal to the TV (lousy audio) I hear the music
I am using a new Apple Mac mini with the latest OS (10.13.3) with 4 gig ram and 500GB memory.
This is not much use to me if I can’t hear anythng and I am on trial period.
I have Red book 44 all the way to DSF and 192khz 24 bit files.

Hi @Peter_Heathcote ----- Thank you for the report and sharing this observation you have made with the mentioned TacT equipment. The feedback is appreciated!

Moving forward, to help aide in our evaluation of this behavior you are reporting may I very kindly ask you for the following:

  • Just to verify, the mentioned MacMini is currently hosting your Roon core, correct?

  • Please describe how the TacT 2.0S + S2150 are communicating with Roon?

  • Please provide screenshots of the following:

    • The signal path leaving Roon when the error occurs.
    • The playback setting being used for the mentioned audio zone (i.e TacT 2.0S + S2150).