Is it possible to expand the Mackie 1220 w/Firewire's outputs? The 1220 w/Firewire has a 16 channel in, but only a 2 channel out. I was looking at the ONYX 800R. Would I still be able to multi track record with the 16 channels and also have additional outputs? Looking for at least 6 out. This is a future upgrade I'm considering and wondering if it would be cost effective and most efficient.