A quick scan of the Presonus website tells me that it looks unlikely. I can't see any
mention of a stand-alone mode or sufficient digital outputs/inputs. If you need more
inputs then take a look at adding a Behringer ADA8000 connected to the ADAT input on your
Saffire. They're often less than £100 secondhand.
James.
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JRP Music - Audio Mastering and Restoration.
http://www.jrpmusic.net