I removed the anti-feedback footswitch which I never used, and changed it so that it could switch between two different presets on the 16 way dial. More information on my blog:
http://jameslow.com/2015/02/23/fishman-aura-spectrum-di-preset-mod/
Signal path is:
Michael Kelly Hybrid Piezo - Fishman Aura - Presonus Audiobox USB - Garageband
(You hear background strumming because I left the camera audio in for the "click" of the footswitch)
Preset 1 (acoustic): Taylor 612 Kathy Matta - Soundelux E47
Preset 2 (resonator): Paul Beard Mike Auldridge Square Neck - Schoeps CMC64G