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 MIDI Expression by AudioFront is .
MIDI Expression
Product MIDI Expression
Developer AudioFront
Price (MSRP)
Type / Tags PedalAudioFrontMIDI / Audio InterfaceMIDI Expression
Plug-in, App & Soundware Format(s)
This is a Hardware product
InterfacesUSB 2
I/O¼” Line In
PowerBus Powered
DriverNo Driver Required
Operating System Availability
Download Released
Downloads Released

MIDI Expression is a class compliant USB MIDI interface that allows you to connect expression pedals, sustain pedals, hihat controllers and footswitches to your DAW or mobile device.

Main Features:

  • Pedal Sensing Technology.
  • Internal presets.
  • Adjustable expression curves.
  • User friendly interface.
  • Class compliant.
  • Compact design.

MIDI Expression features Pedal Sensing Technology which dynamically detects the type of pedal plugged into it and loads a corresponding preset. If the default settings aren't suitable, they can be configured using the MIDI Expression control application. Its powerful and intuitive graphical interface makes configuring the device a simple and painless process.

MIDI Expression is class compliant meaning that it can be used on any OS that supports USB without installing a driver.


  • weight: 30 grams.
  • length: 2.5" (6.35 cm).
  • width: 1" (2.54 cm).
  • input: 1/4" TRS.
  • output: Mini-B USB.

Tested with the following Pedals

M-Audio EX-P, M-Audio SP1, Yamaha FC3, Moog EP-3, Yamaha FC7, Behringer FCV100, Boss FS-5U, Roland EV-5, Moog EP-2, Yamaha FC4, Boss FS-5L, Yamaha FC5, Hammond EXP20, Ernie Ball MVP, Line 6 EX-1.

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