Hi @ranchnet, these controls are not mapped to the Mixtour Pro because it does not have a dedicated Sample Volume control. Please note that the Sampler and Looper volumes are independent of the Deck/Channel volumes. However, you can control them inside the software (see below).
Alternatively, you could MIDI map these controls to something like SHIFT+High EQ on your controller:
For more info on MIDI Mapping on macOS, please refer to the FAQ linked below:
