Sampler extended parameters in Logic Pro for Mac
You can use Sampler extended parameters to enable use with MPE and guitar controllers, providing enhanced expression capabilities. You can access these parameters by clicking the disclosure arrow at the lower left of the interface.
Extended parameters
MIDI Mono Mode pop-up menu: Choose Off, On (with common base channel 1), or On (with common base channel 16).
In either active mode, each voice receives on a different MIDI channel. Per-voice channels support pitchbend, aftertouch, modwheel, and CC messages. Controllers and MIDI messages sent on the base channel affect all voices.
Mono Mode Bend Range slider: Set a value from 0 to 96.
The chosen pitch bend range affects individual note pitchbend messages received on all but the common base channel. The default is 48 semitones, which is compatible with the GarageBand for iOS keyboard in pitch mode. When using a MIDI guitar, 24 semitones is the preferable setting because most guitar to MIDI converters use this range by default.