Volume lost when playing through Audivarna

I can’t get the volume up to an acceptable level. I’m using Audivarna on my Mac, playing both music stored on a personal cloud on my local network and streamed music from Qobuz. It does play the tracks but even if I put volume up to maximum, I can hardly hear it. I can play the stored albums over Apple Music at a decent volume. This was working fine in Audivarna previously.

Any suggestions welcome

Richard