Greetings all,

I spotted a closed thread about the possibility of using the OMNI I/O as a standalone pre-amp/mixer and the answer is:

YES. with the caveat that it now becomes a 2-channel mixer.

The fix is simple:
- Connect two balanced cables from the INSERT 1&2 ports at the back to the EFFECTS RETURN L&R

Voila, you can now use the mic pre-amps, phantom power etc.

Great way to breathe new life into a great product.