Smash

Thank you everyone for confirming that, Im not going insane. Thats a great shout Eric, I will shoot some feedback over to them.

Yea this where I've changed it. If I switch to a different output like 17-18 it uses that output but output 1-2 become unusable.

Does anyone know how to change the stereo ouput from 1-2 . I have done it in system preferences under I/O however I lose the pair. Thanks