Aggregate device from Mac into Tascam model 12

[Sean-Lee Duncan]

I'm almost about to buy a Model-12 (or Motu) but just need to check a few things first.

Can I output an aggregate device from my MacBook into the Tascam and have channels separated?

I'm trying to minimise cables so my thoughts were I could USB my TR8s and Digitone to my MacBook to create an aggregate device, then USB from MacBook to Tascam.

Not sure this is possible? Help appreciated!

Thanks