I have a us-16x08. Inputs 1-8 seem to work fine. Input 9&10 show levels in the settings panel mixer, but no audio is routed to Ableton on these inputs. I tried enabling Inputs 11&12 in Ableton's input settings and ableton crashes every time. Also happens when changing input 9&10. Please try harder with your QA. This is the worst audio interface I have ever owned. Unrelated: Input 3&4 bleeds into input 1&2 a tiny bit (if I turn the gain all the way up I can hear it).. whats up with that?