Please Help!

Upgraded my MBPro to Mac OS High Sierra. Now, the audio interface of my Stanton DJC.4 controller is not recognised anymore. The midi controller of DJC.4 still works fine.

The controller is also recognised under "About this Mac -> System Report -> USB" (But not listed under "Audio -> Devices"). Did reset of the PRAM.

Did not use the DJC.4 for a while. Not sure if it run under Sierra. But under the OS before Sierra, it did for sure. Suggestions very welcome!

Cheers
Santscho