Gain Staging is of paramount importance.
Run your Master volume at a decent output so you don't have to push your individual Channel Gains/Volumes.

I wish I had more detailed advice but I'm not familiar (enough) with the Model 1 to give you expert help.

I must say though, use the Bose forums - especially their "find" (search) function for any topic you need.

If you can't find help on THOSE forums for any problem you might have, there's something wrong...