MIDI Eurorack
Martin Doudoroff
This is a study of the rise of MIDI as a supplemental patching system to conventional audio and CV patching. Here, we are mainly concerned with 3.5mm TRS MIDI connectivity, although USB and DINbased MIDI are acknowledged (and of course, DIN can be adapted to TRS via readily available cables).
TRS patching of MIDI in Eurorack is already supported by over 80 modules and it is clearly here to stay. Unfortunately, TRS MIDI has been hobbled right out of the gate by two de facto standards: Type A (Korg) and Type B (Arturia). There’s nothing more than a single wire tranposition between these two standards, but this complication remains a fact of life. (For the time being, I have disregarded another, rare variant that uses TR cables, as it seems to be neither here nor there.)
Scopewise, this study largely disregards MIDItoCV converters, but includes CVtoMIDI converters. Some of the modules below can perform MIDItoCV, but that is not why they are included. MIDItoCV converters are still relevant, of course, but that is wellestablished topic area.
Moreover, this study is exclusive to Eurorack modules. There are, of course, gobs of standalone devices out there that support MIDI over 3.5mm TRS cables or adapter cable.
Acknowledgements: this work began with this ModWiggler thread by user kay_k in 2017, and many contributions by other ModWiggler users. ModWiggler user audionerd created the minimidi.world project in 2019, which includes its own database (including many nonEurorack entries) and an excellent presentation on cabling. I got some of the information in this study from both these sources, and collected the rest, myself, via ModularGrid and module documentation.
I plan to update this study with new modules (and corrections) for as long as it seems relevant to do so.
Latest
20240424 more errata and a few stragglers
20240418 errata and a few stragglers
20240417 first draft
Growth of MIDI Eurorack
The graph below summarizes the number of modules with TRS MIDI support (black line), and the numbers specifically for TRSA, TRSB and modules designed to accommodate both TRSA and TRSB (automatically or manually). The graph omits modules of (as yet) unknown TRS type, and modules that only offer DIN or USB MIDI.
Modules
Utility  
Product  TRS In  TRS Out  Other MIDI  Notes 

1010 MX4 2017 Modular Grid >  B  B × 4 
 
ADDAC 221 2016 Modular Grid >  A  A 
 
ADDAC 222 2016 Modular Grid >  A  A 
 
Alyseum Matrix II 2019 Modular Grid >  B  B 
 
Alyseum QVCA 2019 Modular Grid >  B  B 
 
Alyseum QLinear 2019 Modular Grid >  B  B 
 
Befaco CV Thing 2020 Modular Grid >  A 
 
Befaco VCMC 2019 Modular Grid >  USBB DIN 
 
Clatters Garden Listener 2021 Modular Grid >  A 
 
Deftaudio MIDI TRS Thru 2022 Modular Grid >  A/B  A/B × 4 
 
Divergent Waves DrumFiend 2022 Modular Grid >  A/B 
 
DMMDM Droid MASTER 2020 Modular Grid >  A/B  A/B  USBC 

DMMDM Droid MASTER18 2024 Modular Grid >  A/B × 2  A/B × 2  USBC 

dsp.coffee DPT 2022 Modular Grid >  A/B  A/B 
 
Electrosmith Daisy Patch 2020 Modular Grid >  A  A 
 
Expert Sleepers CVM8 2022 Modular Grid > 
 
Expert Sleepers FH2 2018 Modular Grid >  A/B  USBA USBC DIN 
 
LPZW.modules WK3 MIDI Thru 2017 Modular Grid >  A/B  A/B × 5 
 
LPZW.Schleußig 2018 Modular Grid >  A/B 
 
Malekko SYNC 2017 Modular Grid >  B  B 
 
Manikk Otto MIDI 2020 Modular Grid >  A  A × 4 
 
Michigan Synth Works USB2MIDI 2022 Modular Grid >  A × 5  USBA 
 
Shakmat Clock O’Pawn II 2023 Modular Grid >  A/B 
 
Tesseract Sweet Sixteen 2019 Modular Grid >  A/B  USBB 
 
Tesseract Sweet Sixteen Mk2 2020 Modular Grid >  A/B  USBB 
 
Tiptop Octopus 2023 Modular Grid >  USBB DIN 
 
Tubbutec TRSbridge 2023 Modular Grid >  A/B × 4  A/B × 4 
 
Tubbutec USBbridge A 2020 Modular Grid >  A  A  USBA 

vpme.de trig31 2018 Modular Grid >  B 
 
XOXO Modular MIDIXO 2019 Modular Grid >  A/B  A/B 
 
Sequencer  
Product  TRS In  TRS Out  Other MIDI  Notes 
1010 Toolbox 2017 Modular Grid >  B  B × 4  
Cycle Instruments Tetrachords 2023 Modular Grid >  A/B  A/B  USBC 

DMMDM Droid MASTER 2020 Modular Grid >  A/B  A/B  USBC 

DMMDM Droid MASTER18 2024 Modular Grid >  A/B × 2  A/B × 2  USBC 

endorphin.es Ground Control 2019 Modular Grid >  B  B  USBA USBB  
Erica Black Sequencer 2019 Modular Grid >  B  B  
Erica Drum Sequencer 2019 Modular Grid >  B 
 
Eventide Misha 2022 Modular Grid >  A  A  
Expert Sleepers FH2 2018 Modular Grid >  A/B  USBA USBC DIN 
 
Five12 Vector 2017 Modular Grid >  B × 2  USBA USBB DIN 
 
Flame TAKT 2022 Modular Grid >  B  B  
Flame TON 2022 Modular Grid >  B  B  
Floating Knobs Cuisine 2023 Modular Grid >  ???  ???  
Kaona Zazou 2024 Modular Grid >  A/B  
Knobula Chord Pilot 2022 Modular Grid >  A  A  
Making Sound Machines Stolperbeats 2022 Modular Grid >  A/B  A/B 
 
Plinky 2020 Modular Grid >  A/B  A 
 
RYK Modular M185 2020 Modular Grid >  A/B  A/B  
SDS Digital / Konstantine Accord Melisma 2019 Modular Grid >  A 
 
Squarp Hermod+ 2023 Modular Grid >  A/B  A/B  
Tesseract Modular Tukra 2020 Modular Grid >  A/B  A/B  
Tubbutec 6equencer 2021 Modular Grid >  A  
Westlicht PerFormer 2019 Modular Grid >  A  A  
XOR Nerdseq 2016 Modular Grid >  A  A  DIN 

Zetaohm FLXS1 2017 Modular Grid >  A  A  
Voice  
Product  TRS In  TRS Out  Other MIDI  Notes 
1010 Bitbox 2018 Modular Grid >  B  
1010 Bitbox Micro 2020 Modular Grid >  A/B  B  
1010 Synthbox 2017 Modular Grid >  B  
Atonal Circuits WVR 2022 Modular Grid >  A/B  
Atonal Circuits Tone Hack 2024  A/B  
Dreadbox Lil’ Erebus 2018 Modular Grid >  A  
Dreadbox Dysmetria 2022 Modular Grid >  A  
Dreadbox Telepathy 2024 Modular Grid >  A  A  
Eowave Quadrantid Swarm 2017 Modular Grid >  B  
Expert Sleepers Disting 2017 Modular Grid >  A/B  DIN 
 
Expert Sleepers Disting EX 2020 Modular Grid >  A/B  DIN 
 
Expert Sleepers General CV 2017 Modular Grid >  A/B  DIN 
 
Flame 4VOX 2015 Modular Grid >  DIN  
Gamechanger Audio Plasma Voice 2023 Modular Grid >  A  
Haken Audio Eaganmatrix 2021 Modular Grid >  B  B  USBA  
IO Instruments Kallichore 2020 Modular Grid >  ???  ???  
Jomox ModFM Synth 2023 Modular Grid >  ???  ???  
Knobula Pianophonic 2023 Modular Grid >  A  
Knobula Poly Cinematic 2021 Modular Grid >  A  
Modbap Trinity 2022 Modular Grid >  USBC  
MOK Waverazor Dual Oscillator 2019 Modular Grid >  B  
Moog Subharmonicon 2020 Modular Grid >  A  
Moog Mother32 2015 Modular Grid >  DIN  
Nanopolis Antigone 2023 Modular Grid >  ??? 
 
Neutron Sound Dust of Time 2020 Modular Grid >  A/B  
Neuzeit Warp 2023 Modular Grid >  B  
Oxi Instruments Coral 2023 Modular Grid >  A/B  
Pittsburgh Modular Lifeforms SV1 2016 Modular Grid >  B  
Plinky 2020 Modular Grid >  A/B  A 
 
Rebel Tech Magus 2018 Modular Grid >  B  B 
 
Rossum Electro Music Assimil8or 2023 Modular Grid >  DIN 
 
RYK Vector Wave 2022 Modular Grid >  A/B  
SDS Digital VCO 2017 Modular Grid >  A/B 
 
SoundForce DCO 2021 Modular Grid >  A/B  
SoundForce uDCO 2022 Modular Grid >  A/B  
Squarp Rample 2020 Modular Grid >  A  
Supercritical Demon Core Oscillator 2019 Modular Grid >  A/B 
 
The Centre 2021 Modular Grid >  ???  
Tubbutec/LPZW.modules 6m0d6 2021 Modular Grid >  A/B  
Warped Circuits Threshold 2020 Modular Grid >  A/B  
XOR Nerdseq 2016 Modular Grid >  A  A  DIN 

Ziqal Dimension 2021 Modular Grid >  A  
Filter  
Product  TRS In  TRS Out  Other MIDI  Notes 
Flame Curves 2017 Modular Grid >  B  
RYK Night Rider 2023 Modular Grid >  A/B  
Effects  
Product  TRS In  TRS Out  Other MIDI  Notes 
1010 Bluebox 2023 Modular Grid >  A/B  A/B  
1010 Fxbox 2017 Modular Grid >  B  
dsp.coffee KALI 2022 Modular Grid >  A/B  A/B  
Enjoy Electronics The Godfather 2021 Modular Grid >  ???  ???  
Poly Effects Hector 2021 Modular Grid >  A  A  
Rebel Tech Magus 2018 Modular Grid >  B  B 
 
TiNRS Bopp & Steve 2023 Modular Grid >  A/B  
ZOIA Euroburo 2020 Modular Grid >  A  A  
Video  
Product  TRS In  TRS Out  Other MIDI  Notes 
Erogenous Tones Structure 2018 Modular Grid >  USBA  
Sleepy Circuits Hypno 2020 Modular Grid >  USBA 
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