I'm currently running a LE session(6.4) with an mbox 1 on a windows machine, and have been very tempted to invest in the mbox 2. I'm wondering if both interfaces can be run in tandem in a session to have a larger cache of inputs into the system. I could not find any documentation on the Digi site. I don't see any real problem with this, but was wondering if anyone has tried this, and to what result...