We are a retail music store just getting into computer DAW and related hardware - although I have some personal experience with both computers and DAWs already. We have carried Yamaha THR10 and THR5A interfaces for a few months. Yamaha now own Steinberg, so these use the Steinberg VSIO drivers and like the UR22 ship with Cubase AI6.
We just received sample units of the Steinberg UR22. Nice units - but we were surprised to see we could not use the UR22 and the THR at the same time. The driver seems to want to support only one device at a time. This prohibits, for example, tracking a vocal+guitar performance in a single take with the vocal connected through the UR22 and the guitar through the THR.
Is there a way around, this, for example if our computer has two completely separate USB controllers? Or are we limited to only one VSIO device in use at a time? I know in professional DAW setups one can have multiple A-to-D interfaces operating at once, tracking many sources in one take.