>>let's say you have two Xpanders midied together (midi out from one to midi in of the second).
>>does the Xpander support a 'midi overflow' mode, so you could play two Xpanders as one 12-voice machine?
I don't think it does this natively, which is a shame since that function IS supported in the Matrix 1000.
You could probably implement it easily with Midiox, Bomes (OSX) or a similar midi mapping software, but then are restricted
to needing a laptop.