haken-audio/eaganmatrix-module

EaganMatrix Module

EaganMatrix Eurorack Module: full-featured EaganMatrix synthesis engine in 22HP Eurorack format, with 4 per-note CV inputs (W/X/Y/Z), 4 global CV inputs (i/ii/iii/iv), stereo audio I/O, MIDI in/out, USB MIDI, i2c port, 12 switches, 1 rotary, and LED matrix. Nominal 1 voice, max 8 voices polyphony.131

Capabilities 5

Audio Processoraudio-processor: Audio input (stereo/mono unbalanced) treated differently depending on preset, allowing use as a sound processor.131
CV Sourcecv-source: CV source capability via i2c connection to external Haken Audio CVC or Evaton Technologies µCVC. Up to 8 CVC outputs per voice via EaganMatrix CVC bank.131
MIDI Sourcemidi-source: 131
Polyphonicpolyphonic: Up to 8 voices of polyphony. Per-note CV inputs W/X/Y/Z plus 4 global CV inputs i/ii/iii/iv.131
Sound Sourcesound-source: Full-featured EaganMatrix synthesis engine with hundreds of presets. Acts as a sound source within Eurorack.131

Jacks 12 — 9 in / 3 out

Name	Signal	Voltage	Description
Inputs (9)
Audio In L	audio	—	Unbalanced audio input, left channel (or mono). Treatment depends on preset.131
Audio In R	audio	—	131
Macro CV Inputs	cv	-5V to 5V	131
Midi In	mixed	—	3.5mm Type A, B, or TS. Used for MIDI operation and firmware updates. Can be used simultaneously with W,X,Y,Z CV inputs.131
W CV	gate	-10V to 10V	Per-note gate input. Triggers at >1V. Max range -10V to +10V.131
X CV	cv	-10V to 10V	Per-note pitch CV input. 1V/Oct with custom offset for Middle C.131
Y CV	cv	0V to 5V	Per-note timbre CV input. Function depends on EaganMatrix preset. Range 0V to 5V, or -5V to +5V with offsets.131
Z CV	cv	0V to 5V	Per-note loudness/pressure CV input. Normally 0V to 5V; -5V to +5V with offsets.131
i CV	cv	0V to 5V	Global macro CV input i. Affects all voices. Function depends on preset; normally 0V to 5V. Macros v & vi accessible from menu.131
Outputs (3)
Audio Out L	audio	—	Stereo left output. Use of left output only gives mono sum of stereo signal. Level switchable between Eurorack (0 dB) and Line Level (-12 dB).131
Audio Out R	audio	—	131
Midi Out / I2C Out	mixed	—	3.5mm jack switchable between Midi Out (Type B) and I2C output to CVC or µCVC.131

Parameters 9

Name	Type	Range	Behavior
Midi/I2C Out Switch	switch	—	Up: I2C Out to CVC or µCVC. Down: Midi Out (3.5mm) Type B.131
Oct- / Oct+	button	—	Octave shift buttons. Press both Oct- and Oct+ simultaneously to Enter/Exit the menu system.131
Output Level Switch	switch	—	Switches audio output level between 0 dB (Eurorack) and -12 dB (Line Level). Digitally adjustable with a 48 dB range.131
Preset Inc/Dec	button	—	Increment/Decrement preset selection buttons. Modified with the Rotary encoder.131
Rotary	knob	—	Rotary encoder used with the menu system for stand-alone operation and monitoring. Also modifies preset Inc/Dec button behavior.131
W Offset	button	—	Selects W offset: Gate (can set constant Gate on).131
X Offset	menu_setting	—	Selects X offset: coarse and fine tuning.131
Y Offset	menu_setting	—	Selects Y offset: maps to Y control in presets (usually timbre).131
Z Offset	menu_setting	—	Selects Z offset: loudness (usually maps to pressure).131

Firmware history 1 version

Version	Released	Notes
8.50	2017-06-20	131

References 3

[131]
Haken Audio EaganMatrix Module — details / specificationsproduct_page
source 131 canonical ↗ archived ↗

● verified 2026-05-05
[132]
Haken Audio EaganMatrix Module overviewproduct_page
source 132 canonical ↗ archived ↗

● verified 2026-05-05
[133]
EaganMatrix User Guide (Haken Audio, hosted by Alex4 distribution)manual
source 133 canonical ↗ archived ↗

● verified 2026-05-05