Eurorack Stereo Mixer Module Comparison

Martin Doudoroff

Related discussion thread: stereo mixer module comparison (MuffWiggler forum)

2019-06-28 added new column about individual outs (for multitracking), other updates 2019-05-08 added OIII Quad Mixer
2019-04-30 added Make Noise X-Pan and the AGO Summingfacility; varoius other updates
2019-03-27 added Befaco STMIX
2019-02-10 added JPSynth Stereo Mixer
2019-01-20 added Tesseract Tex Mix
2018-11-16 added Takaab Nearness and stubbed out Worng Sound Stage
2018-10-14 added ST-Modular SUM
2018-09-07 Added SSI M-4 and Happy Nerding 3X
2018-05-02 Added Happy Nerding PanMix Jr.
2018-05-01 Added Roland 531, updates
2018-03-15 Added Hyrlo, minor updates
2018-02-07 Stubbed out 4ms Listen modules
2017-12-21 Added Intellijel Mixup
2017-11-13 Stubbed out Random*Source Stereo Mixer
2017-08-14 Doepfer shipping update
2017-07-04 Stubbed out the Befaco HEXA
2017-06-29 XAOC Praga shipping update
2017-06-05 Rebel Technologies Mix 02, Eric Stereo Mixer V2
2017-06-01 ADDAC Stereo Summing Mixer
2017-05-02 GRP Stereo Out Module
2017-04-13 Doepfer A-138s
2017-04-06 Qu-bit Mixology update
2017-02-21 L-1 2 Channel Mixer & Unity Stereo Mixer
2017-02-01 Rebel Technologies Mix 01
2017-01-31 Cwejman MX-4AS
2017-01-30 Doepfer A-135
2017-01-19 Qu-bit Mixology update
2017-01-17 Pittsburgh Lifeforms System Interface
2016-09-19 Ladik M-175 (and related)
2016-09-15 WMD & Erica updates
2016-08-21 Toppobrillo & Frap Tools update
2016-07-06 Topporillo update
2016-07-05 Endorphin.es Cockpit
2016-06-29 Blue Lantern Stereo Sir Mix Alot + new related modules
2016-06-01 Additonal PanMix details
2016-05-19 Added Happy Nerding PanMix & Hinton references
2016-05-18 Added Arrel ER-100
2016-03-24 Added initial info on Doepfer A-138p/o
2016-03-23 Added initial info on Frap CGM
2016-03-15 Added headphone column; updated data on Koma mixer
2016-02-01 Updated WMD photo
2016-01-27 Updated Toppobrillo info, new photos
2016-01-26 More additions and corrections
2016-01-25 Added more placeholder photos, missing modules, errata
2016-01-24 Errata and many additions from Muffwiggler members
2016-01-23 Rough draft

ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
4ms Listen 4

Modular Grid >
Web site >
Yes 10 2-4 2-4 40% 0 0 0 0 Yes 189
  • can be daisy chained with other 4ms Listen modules
  • line level output switch and master attenuator
4ms Listen 4 1/4

Modular Grid >
Web site >
Yes 12 4 0 33% 0 0 0 0 Yes 209
  • 1/4" TRS outputs that can be run as balanced or [verify] dual stereo outs
  • can be daisy chained with other 4ms Listen modules
ADDAC Stereo Summing Mixer

Modular Grid >
Web site >
Yes 80 1-5 1-5 6% 5 5 5 (manual) 3 stereo sends pre- or post-fader (switched per channel) Yes 1344
  • product is broken into two modules, one for I/O and one for control
  • expander adds four more fully-featured channels
  • cueing system
  • extensive line level support
Arrel Audio ER-100 Eurorack Stereo Summing Mixer

Modular Grid >
Web site >
Yes 28 8 1 stereo aux, 1 stereo insert 29% 0 0 8 solo (manual) 1 stereo send Yes 1000
Audio Gear Obsession SUMMINGFACILITY

Modular Grid >
No 38 6 aux returns can act as a stereo input 16% 0 0 6 mutes (manual), 6 send mutes (manual) 2 No TBD
  • balanced i/o
  • expanders planned
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Befaco HEXA

Modular Grid >
Web site >
Yes 70 6 3 stereo returns 9% 0 6 6 (manual) 3 mono sends post-EQ/fader Yes 1200
  • product is broken into three modules
  • per-channel and master EQ features
  • cueing system
  • LED UV meters for master mix
Befaco STMIX

Modular Grid >
Web site >
Yes 6 0-5 0-5 83% 0 0 0 No 150
  • can be daisy chained together or to the Befaco Hexmix
Blacet MIX3500

Web site >
Yes (DIY) 15 1-5 0-2 33% 0 0 0 0 Yes (sort of) 140+
Blue Lantern BMX 6 Channel Stereo Mixer

Modular Grid >
Yes (DIY or pre-built) 34 6 0 18% 0 0 6 (manual) 2 Yes 45+
  • supports line- or eurorack-level inputs
Blue Lantern Stereo Sir Mix Alot

Modular Grid >
Yes (DIY or pre-built) 24 6 2 33% 0 0 0 2 No 225
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Circuit Abbey Unify

Modular Grid >
Web site >
Yes 12 4 0 33% 0 0 0 0 Yes 250
  • expanders add up to 16 total channels
  • clipping LED indicator
Cwejman MX-4S

Modular Grid >
Web site >
HAHAHA 20 4 0 20% 4 4 0 0 No 900
  • cv over master level
  • LED UV meters for master mix
Cwejman MX-4AS

Modular Grid >
No 50 4 1 stereo AUX return 8% 4+ 4+ 4 1 stereo send No TBD
  • full stereo AUX send with independent pan and cv
  • cv over mute
  • envelope followers per channel
  • balanced outs
  • LED UV meter
  • clipping indicators
Doepfer A-135-4A/B/A-138o

Modular Grid >
Web site >
Yes 30 4 0 13% 4 4 4 (cv) 4 No 440
  • expandable up to sixteen channels
  • can be mixed/matched with A-138 modules
  • per-channel gain
  • envelope follower expander
Doepfer A-138p/o

Web site >
Yes 20 4 0 20% 0 0 4 (manual) 1 No 150
  • expandable (multiple A-138p per A-138o)
  • per-channel gain
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Doepfer A-138s

Modular Grid >
Web site >
Yes 8 4 0 50% 0 0 0 0 No 90
EMW Stereo Mixer

Modular Grid >
Web site >
Yes 14 4 0-2 29% 0 0 0 0 Yes (sort of) 85
Endorphin.es Cockpit

Modular Grid >
Web site >
Yes 6 0 4 67% 0 0 4 mutes 0-2 Yes 259
  • makes extensive use of TTRS connectors
  • compressor
  • partly intended to facilitate use of iOS devices as effects processors
  • design may be strongly biased toward use with other Endorphin.es modules
Erica Synths Black Output

Modular Grid >
Web site >
Yes 14 3 0 21% 1 0 0 0 Yes 300
Erica Synths Stereo Mixer v2

Modular Grid >
Web site >
Yes 10 1 3 40% 1 0 0 0 No 146
  • Pre-fade Listen Expander available adds headphone output and cueing
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Frap Tools CGM

Modular Grid >
Web site >
Yes 30 3+ 2+ 10% 3+ 3+ 3+ (manual) 2+ pre- or post-fader (switched per channel) Yes $950+
  • unique expandable modular design (picture shows only one possible combo)
  • extensive VCA support on everything
  • solo functionality (requires Group module)
  • pre-fader cueing (requires Master module)
  • LED UV meters for master mix (Master module)
GRP Stereo Out Module

Modular Grid >
Web site >
Yes 16 3-4 0-1 25% 0 0 0 0 Yes 350
Happy Nerding Panmix

Modular Grid >
Web site >
Yes 16 4-6 (switches on back) 0-2 (switches on back) 38% 0-6 0-6 0 0 Yes (sort of) 300-350
  • LED UV meters for master mix
  • headphones and main outputs share one attenuator
  • inputs 3 and 6 can accept stereo mini jacks depending on switches on back of panel
  • can be daisy chained with other Happy Nerding stereo modules
Happy Nerding Panmix Jr.

Modular Grid >
Web site >
Yes 6 3 0 50% 0 0 0 0 No 100
  • can be daisy chained with other Happy Nerding stereo modules
Happy Nerding 3X Stereo Mixer

Modular Grid >
Web site >
Yes 6 1-3 1-3 50% 0 0 2 (manual) 0 Yes (sort of) 100
  • can be daisy chained with other Happy Nerding stereo modules
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Harvestman Escalation Dominance

Modular Grid >
No (and not formally announced) 28 6 1 stereo AUX return 21% 6 6 6 (manual) 1 No (TBD) TBD
  • built-in trigger-able envelopes for muting
  • cv control over level/pan/envelope is modal per-channel
  • elaborated AUX send architecture
  • expanders planned
Intellijel Dubmix

Modular Grid >
Web site >
Discontinued 28 4 1 stereo aux input (2 more with expander) 14% 4 4 (but requires expander for use) 4 (manual) 1 mono send, 1 stereo return; additional sends with expander No 600
  • expanders add two more aux sends and/or CV control over channel levels
  • elaborated AUX send architecture (see docs)
  • LED UV meters for master mix
Intellijel Mixup

Modular Grid >
Web site >
Yes 6 2-4 0-2 67% 0 0 3 (manual mutes) 0 No 90
  • no panning controls
  • chainable indefinitely
JPSynth Stereo Mixer

Modular Grid >
Web site >
Yes 8 0-4 0-4 50% 0 0 0 0 No 113
  • master attenuator
Knob Farm Hyrlo

Modular Grid >
Web site >
Yes 4 0-6 0-3 75% 0 0 0 0 No 90
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Koma Elektronik Poltergeist

Modular Grid >
Web site >
Yes 28 4 1 aux in 14% 4 4, plus master 4 (manual) 0 No 800
  • elaborated stereo or quad panning features
  • compression feature
  • self-patching-oriented design
L-1 VC Stereo Mixer

Modular Grid >
Web site >
Yes (DIY or pre-built) 22 4 0 18% 4 4 0 0 Yes (sort of) 155+
  • master level cv
  • LED VU meters for master mix
L-1 Two Channel Voltage Controlled Stereo Mixer.

Modular Grid >
Web site >
Yes (DIY or pre-built) 14 1-2 1-2 14% 2 4 0 2 stereo sends; no returns 0 115+
  • LED UV meters
  • full CV over level and pan (but not the SEND)
L-1 Unity gain Stereo Mixer

Modular Grid >
Web site >
Yes (DIY or pre-built) 12 0 10 83% 0 0 0 0 0 68+
  • (this is a straightforward high capacity unity mixer meant to pull together an expandable stereo mixing combination with other modules)
Ladik M-175 (and M-171, M-172, M-173, and M-174)

Modular Grid >
Web site >
Yes 12 2-6 1-4 50% 0 0 0 0 0 TBD
  • available in various configurations
  • M-177 and M-178 expanders
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Make Noise X-Pan

Modular Grid >
Web site >
Yes 10 2-3 0-1 30% 2 1-3 0 0 No 259
  • output is modular level
  • two of the three channels are voltage-controlled crossfader circuits
OIIIAUDIO Quad Mixer

Modular Grid >
Web site >
Yes 24 4 0 17% 4 0 0 0 Yes 349
Pittsburgh Lifeforms System Interface

Web site >
Yes 24 6 1 stereo AUX return 25% 0 0 0 1 mono send Yes 250
  • discreet aux, bus and main paths with per-channel switching
  • LED levels
  • first channel designed to double as an external input
ProModular MIIIIX

Modular Grid >
Web site >
Discontinued 18 4 0 22% 4 4 4 (manual) Expander post-fader Yes (sort of) 600
  • expanders add AUX send/returns, cv control over mute/solo and other features
  • up to four MIIIX can be chained for up to 16 total channels
  • extra output configuration options
Qu-Bit Mixology

Modular Grid >
Web site >
Yes 28 4 1 stereo AUX return 14% 4 4 4/4 (manual) 1 No 400
  • LED UV meters for master mix
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Random*Source Stereo Mixer

Modular Grid >
Web site >
Yes 18 2 0 11% 2 2 0 0 No 250
  • DIY
  • left and right aux inputs (unity)
  • balanced outputs
Rebel Technology Mix 01

Modular Grid >
Web site >
Yes 10 4 0 40% 0 0 0 0 Yes (sort of) 115
  • matrix mixer design
  • rear bus interconnect options for chaining
Rebel Technology Mix 02

Modular Grid >
Web site >
Yes 10 4 0 40% 0 0 0 0 Yes (sort of) 150
  • rear bus interconnect options for chaining
Roland SYSTEM-500 531 MIX

Modular Grid >
Web site >
No 20 4-6 0-1 30% 6 0 6 (manual) 0 Yes 399
  • stereo preamp with 1/4" jack
Sputnik 6-Channel Stereo Mixer

Modular Grid >
Web site >
Yes 20 6 0 30% 2 0 4 (manual) 0 Yes 250
  • LED UV meters for master mix
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Sputnik Quadrophonic Mixer

Modular Grid >
No 28 1 (plus one per expander) 0 4% 1 1 0 TBD Yes TBD
  • onboard EQ
  • onboard reverb
ST-Modular SUM

Modular Grid >
Web site >
No 26 5 1 stereo input, 1 stereo aux return 27% 0 0 5 1 Yes TBD
  • DIY-only
  • the five mono channels have manual EQ control
Strange Science Instruments M-4 Advanced Stereo Mixer

Modular Grid >
Web site >
Yes 28 4 0 14% 4 4 0 0 No 700
  • variable gain switch for the VCAs
Synthrotek MST Stereo Output Mixer

Modular Grid >
Web site >
Yes 6 2-4 0-2 67% 0 0 0 0 No 85
  • no cv control, but circuit is both AC and DC coupled
  • dual stereo outs
  • unusual 2 channel, 2 inputs-per-channel configuration
Takaab Nearness

Modular Grid >
Web site >
Yes 3 7 0 133% 0 0 0 0 No 50
  • the input jack you select corresponds to relative pan placement in the stereo field
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
Tesseract Tex-Mix

Modular Grid >
Yes (DIY or pre-built) 32 4-8 0-4 25% 0 4 8 (manual) 2 mono sends, 2 stereo returns Yes 250
  • expandable modular design (this is only one possible configuration)
  • cue system
Toppobrillo Stereomix

Modular Grid >
Web site >
Yes 24 4 1 stereo AUX return 17% 4 4 4 (manual) 1 mono send, 1 stereo return Yes 550
  • cv over AUX send for each channel
  • LED level indicators for master mix
Verbos Scan & Pan

Modular Grid >
Web site >
Yes 14 4 0 29% 4 4 0 0 No 400
  • cv-controlled center/width control as per harmonic oscillator
  • LED level indicators per channel
WMD Performance Mixer

Modular Grid >
Web site >
Yes 40 6 2 20% 8 8 0 2 post-gain, pre-fader (requires DB25 expander) Yes 750
  • 6 mono channels, each with 2 switched inputs
  • 2 true stereo channels
  • 2 mono send/returns
  • one stereo insert
  • one end of chain stereo send/return, dual input buses
  • cueing system
  • various LED indicators
  • full headphone support
  • expanders add mute controls, two additional full stereo channels
Worng Sound Stage

Modular Grid >
Web site >
Yes 12 22 0 183% 0 0 0 0 No 350
  • the input jack you select corresponds horizontally to relative pan placement in the stereo field
  • vertical jack selection corresponds to EQ-like filtration (controlled overall manually or with CV)
  • manual and CV-control over output level
ProductShippingHPMono InputsStereo InputsChannel Density/HPCV PanningCV VCAsMute/SoloSendsIndividual OutsHeadphone OutApprox. Price (USD)Additional Notes
XAOC Praga

Modular Grid >
Web site >
Yes 20 4 2 stereo returns 20% 4 4 4 (manual, CV with expander) 2 mono sends, 2 stereo returns post-fader No 515
  • individual LED VU meters per channel
  • cv for each VCA switchable between unipolar and bipolar
  • two units can be chained for eight channels
  • HRAD expander adds additional CV and full master section

In addition, these modules don’t really belong in the above comparison but have been pointed out as being of potential interest:

• • •