What the setup needs, at least in my experience, is to have the UMC404HD running on bus power. For my purposes, AudioBus isn't something I need yet. In the end, I figured out that I can get by without AudioBus. It would work the same with the UMC404HD. I pulled up audiobus hooked up to my iConnectAudio4+ and it sees all 10 outputs. Said: Yes Audiobus or AUM or ApeMatrix or even LoopyPro all can send out multiple outputs.
