Alright, so brand new purchase. Figured it would just be plug-n-play. El Capitan, everything works! I also have a Centrance Micport Pro USB Interface; and it works just fine. No issues what so ever.
Plug the Audiobox in /w the stock cable... Nothing, move it to the other USB port; and finally it shows up but only momentarily, then it starts to disappear and show up again a few times until it's gone for good.
Unable to make it work!?!?!? Any ideas.