Universal Audio pedals can be MIDI controlled with the new UAFX 2.0 firmware update. You can recall presets using PC messages (for UAFX pedals that support presets) and control effect parameters using CC messages.

How to Connect?

Make sure your UAFX pedal is updated to the latest firmware and your UAFX Control app is up to date too.

UAFX pedals receive MIDI via their USB device ports. As such, you will need a USB host port to be able to communicate with them. Morningstar PRO controllers have USB host ports that allow you connect directly to and MIDI control UAFX pedals.

To control multiple UAFX pedals, you can connect a USB hub to the MC8 PRO's host port for more connections.

If your MIDI controller does not have a USB host port, you can purchase and connect a MIDI USB host to your controller, and be able to control UAFX pedals too.

Universal Audio has published an in-depth article that will help you Get Started with UAFX 2.0 USB MIDI.

Two Categories of Pedals

All dual-footswitch Universal Audio pedals have been updated with MIDI capabilities. However, not all pedals have preset capability and accept Program Change (PC) messages. Only pedals with preset footswitches have the ability to store presets, and have them recalled with PC messages.

Only pedals with PRESET footswitches can store presets and receive PC messages Pedals without preset capabilities only accept Control Change (CC) messages to control effect parameters.

What Can Be MIDI Controlled?

Universal Audio has done a great job and delivered comprehensive MIDI implementation for all the updated pedals. Aside from recalling presets on pedals with preset capabilities, you can control pretty much every effect parameter available on the UAFX pedals.

All MIDI-controllable parameters and functions have also been added to the Morningstar MIDI Dictionary for all UAFX pedals. You can simply select your desired model and parameter/function you want to control from the dropdown lists. No need to refer to any MIDI charts or use the UAFX Control app.

Updated on: 13/11/2025