Is it possible to connect a mixing console to apogee one or to Mac Os X?

The Apogee One User's Guide has some details on connecting that product to OS X systems. (It's probably best to see what the folks over at the Apogee web site have available for this question, too. That document is a few years old, after all. The folks over at the Apogee site will likely be far more familiar with these connections than most of the folks around here, too.)

It might also be a good idea to ask on the GarageBand or Logic forums. While technically off-topic, a lot of folks there have a lot of experience with hooking up audio gee-gaws with Macs.