Hi and hopefully you can help me. I have a new Audio 6 that is working with my guitars and powered monitors. I'm trying to plug in my classic Korg Triton Workstation. I have the it connected to my computer via a M-Audio USB Midi Interface. I also have the keyboard plugged into the instrument Input on the face of the Audio 6. It's going through a 2017 iMac on OS 10.14 - The Audio 6 is getting a signal, according to the Input status light for Input 2. No sound though. Nothing, nada. Anybody know what I'm doing wrong?