The Microdesignum MIDI control module for EHX Synth9 is an Electro-Harmonix Synth9 guitar pedal with a MIDI control module installed by Microdesignum, sold as a unit for full control of all functions via MIDI1. The Synth9 is a synth pedal, and this version adds MIDI so a MIDI controller or pedalboard switcher can drive it instead of the onboard controls.
What it does
The module puts the Synth9's main functions under MIDI control. Bypass can be switched on and off remotely, the pedal's nine programs can be selected over MIDI, and its four knobs can be controlled as well1. Beyond live control, sets of parameters can be stored to 128 programs, so a whole pedal setting can be recalled with a single program change1.
For a player, that means the Synth9 can sit in a MIDI-driven rig and change sounds from a controller, rather than needing to be reached down to at the pedal itself1.
Where it fits in Microdesignum's range
Microdesignum builds MIDI control into a range of Electro-Harmonix pedals. The Synth9 belongs to the x9 family, and the company offers a dedicated MIDI control module for EHX x9 pedals, along with modules for pedals such as the EHX POG2 and the EHX Cathedral. The company also makes standalone MIDI controllers, including the MIDI Grande and the MIDI Piccolo 2F1D, which can be used to send the program changes and knob moves this module receives. For the wider picture, see the MIDI pedals type page.
Videos
Microdesignum s.r.o.
Questions
What can the Microdesignum MIDI control module control on the EHX Synth9?
Microdesignum lists bypass (on/off), the Synth9's programs 1 through 9, and the pedal's four knobs as controllable via MIDI. Sets of parameters can be stored to 128 programs, so a MIDI controller can recall complete pedal settings rather than just switching the effect on and off.
Is this a standalone pedal or a modification?
It is an Electro-Harmonix guitar pedal with a Microdesignum MIDI control module installed, sold as a unit for full control of all functions via MIDI. Microdesignum also offers MIDI modules for other Electro-Harmonix pedals, such as the x9 series.
Sources (1)
- EHX Synth9 with MIDI control, Microdesignum







