The Matthews Effects Micro POG MIDI Mod is a modification service for the Electro-Harmonix Micro POG, the polyphonic octave generator that supplies extra notes an octave above and below the played pitch1. Matthews takes the POG and adds a "Preset" indicator bulb, a MIDI In jack and a "Preset Select" footswitch, turning a pedal with no preset or MIDI capability into one that stores and recalls settings2.
The product page listed the mod as sold out as of 26 October 20262. The price is given in pounds sterling as listed by the maker; it is not a US dollar figure.
Presets and MIDI control
The mod gives you 3 presets you can access with the provided "Preset Select" footswitch. By connecting a MIDI controller to the MIDI In jack you access all 30 of the internal presets, using PC messages on the correct MIDI channel2.
The added indicator bulb shows which preset is active: red for Preset 1, green for Preset 2 and yellow for Preset 3. Another press from the preset switch programs either the red, green or yellow preset2.
Continuous controller messages adjust the pedal's mix levels from a MIDI controller2:
| MIDI message | What it adjusts |
|---|---|
| CC0 | Dry |
| CC1 | Sub Oct |
| CC2 | Oct up |
For players building a MIDI-controlled board, the mod sits alongside Matthews Effects' own MIDI gear such as The Futurist controller pedal, and the company applies the same treatment to the smaller pedal in its Nano POG MIDI Mod.
Getting one: the three versions
The mod is offered in three forms2:
- Pre-Modded: the POG is provided with the mod already done.
- MOD Ours: Matthews Effects purchases a POG for you and then mods it.
- MOD Yours: you send in your POG to get modded.
The maker notes that a POG is only provided for the Pre-Modded and MOD Ours options, and that previously modded POGs are not accepted2.
Other POG mods for comparison
Matthews Effects is not the only shop to have modified the Micro POG. JHS Pedals offered an EHX Micro POG mod that gave the ability to use up to 4 unique presets on the fly3. An earlier independent design, the Micro POG Dual Control modification published on Guitar FX Layouts in May 2014, took a different approach: a dual control mod with external controls, switching between two sets of pots with a 4PDT stomp, with a bi-color LED giving a different color for each "channel" selected4. The Matthews mod goes further on presets and adds full MIDI control, which the earlier designs do not have.
Questions
What does the Matthews Effects Micro POG MIDI mod do?
Matthews Effects takes an Electro-Harmonix Micro POG, a polyphonic octave generator that supplies extra notes an octave above and below the played pitch, and adds a preset indicator bulb, a MIDI In jack and a Preset Select footswitch. The additions give the pedal three footswitch-accessible presets and 30 internal presets reachable from any MIDI controller.
How many presets does the modded Micro POG have?
Three presets are available at the pedal itself, selected with the provided Preset Select footswitch. Connecting a MIDI controller to the MIDI In jack opens up all 30 of the internal presets, accessed with PC messages on the correct MIDI channel.
Can you send your own POG to Matthews Effects to be modded?
Yes. The MOD Yours option means you send in your POG to get modded. The MOD Ours option has Matthews Effects purchase a POG for you and then mod it, and the Pre-Modded option comes with the POG already included. Matthews does not accept previously modded POGs.
Which MIDI messages control the modded Micro POG?
PC messages access all 30 internal presets on the correct MIDI channel. Continuous controller messages adjust the pedal's mix levels: CC0 adjusts Dry, CC1 adjusts Sub Oct and CC2 adjusts Oct up.
What do the preset indicator colors mean?
The added Preset indicator bulb shows which of the three presets is active: red for Preset 1, green for Preset 2 and yellow for Preset 3. A press of the preset switch programs the selected color's preset.
Is the Micro POG MIDI mod still available?
The Matthews Effects product page listed the mod as sold out as of 26 October 2026. The page offered three versions: Pre-Modded, MOD Ours and MOD Yours.
Sources (4)
- Electro-Harmonix Epitome review, MusicRadar, 2013-08-28
- Micro Pog Midi Mod, Matthews Effects
- EHX MICRO POG MOD, JHS Pedals
- Guitar FX Layouts: Micro POG Dual Control modification, Guitar FX Layouts (tagboardeffects.blogspot.com), 2014-05-14
