I just recived mine in the mail thursday, haven't done much beyond transfer ancient 4-track casettes so far.
The 1880 only has 8 inputs, 2 Low-Z XLR and six line-level 1/4" inputs, with an additional Hi-Z input for electric guitars and such.
As for external sync, it has a Midi in, and an out/thru, also handles MMC and MTC.
So far I'm not kicking myself for buying it...