(Note: This feature requires the latest version of Studio One v3. UC Surface must be running for Studio One v3 to remotely control your mixer’s DSP)
Click on the Apply DSP to Input Signal button in the upper left hand corner of the Fat Channel plug-in to record the Fat Channel settings with your audio:
To listen your recordings through the same Fat Channel processing as the audio you are monitoring, simply drag the DSP Fat Channel plugin down to the channel insert to load an instance of the native Fat Channel plugin.
By default, the “link to DSP” button will be enabled. This links the parameters between the native and DSP Fat Channel plug-ins. Editing either will change both.
MIDI Controllers can be setup and linked to FatChannel knobs.
http://support.presonus.com/hc/en-us/articles/210050323-Studio-One-3-Global-and-Focus-MIDI-Mapping