Silent Way

Device Compatibility

Note: the talk below of 'compatible audio interfaces' specifically refers to using the interfaces' own analogue audio outputs to directly drive synths. It does not reflect on the interfaces' possible compatibility with the Expert Sleepers digital modules (ES-3, ES-4 etc.).

DC-Coupled Audio Interfaces

The following interfaces have been tested with Silent Way. If you have any experience of Silent Way with other interfaces, please let us know and we'll update the chart.

Please note: most MOTU interfaces with TRS outputs are expected to work fine. The ones listed below are only the ones that have been specifically tested with Silent Way.

Note also: Silent Way CV Input has no special requirements and should work with any audio interface. The key with Silent Way CV Input is to have the right VCA - see below.

Interfaces tested and working
Interface Tested by Notes
MOTU Ultralite Pete Marshall See this thread.
MOTU Ultralite Mk3 Expert Sleepers
MOTU Ultralite Mk3 Hybrid George P. Macklin
MOTU 828 justin3am
MOTU 828 MkII Scot Solida
MOTU 828 MkIII untinyunity
MOTU 828x mwvm
MOTU 2408 MkII Cary Grace
MOTU 2408 Mk3 Captain Proton
MOTU 24I/O doctorvague
MOTU 1224 sine The headphone and main XLR outs appear to be wired with the opposite polarity than expected. This is easily resolved - see this thread.
MOTU Traveller Jim Coker
Alesis iO|14 ihav2p
Alesis iO|26 Brandon Daniel
ESI ESP1010 Arnoid
RME Fireface 400 UCAudio Only the headphone outputs are DC-coupled.
Lexicon MPX 500 sine Not an audio interface per se but it does allow you to get two DC-coupled outputs from any spare digital connectivity your interface might have - see this thread.
Eventide H8000FW Analog>Plugins See this thread.
Antex StudioCard SC-22 levlhed See this thread.
Lynx Aurora 8 Jonathan Snipes
Lynx Aurora 16 Martin Kucaj
Echo AudioFire2 phase ghost
Apogee Symphony I/O Kevin Vanwulpen
Universal Audio Apollo Twin UA
Universal Audio Apollo 16 UA
Native Instruments Komplete Audio 6 George P. Macklin
Native Instruments Traktor Z2 George P. Macklin

AC-Coupled Audio Interfaces

Please see this page for information on using Silent Way with AC-coupled audio interfaces.

A Note On Cables

In general special cables are recommended when using a DC-coupled audio interface as a source of CVs. Most audio interfaces have balanced outputs (on TRS ('stereo') jacks or XLRs), while synth CV inputs are unbalanced (usually on TS ('mono') jacks or minijacks). If you use a regular stereo or mono jack lead, you'll be shorting out one of the balanced output signals (usually the R (ring) to the S (shield)). While this probably wouldn't be a problem for normal audio use, when outputting the sustained voltages that are useful as CVs you risk damaging the interface hardware.

The usual recommendation is to make up special cables with a TRS jack at one end and a TS at the other, connecting T->T (tip to tip) and S->S (shield to shield) while leaving the R (ring) floating i.e. unconnected. Such cables can be purchased direct from Expert Sleepers - see the accessories page.

An alternative is to wire a TRS jack to two TS jacks, connecting one T->T/S->S and the other R->T/S->S. This then gives you two copies of the output CV, one of them inverted, which is particularly useful from LFOs. Note that this cable configuration is identical to that of a regular "Y" audio insert lead.


The following synths and modules have been tested with Silent Way Voice Controller. If you have any experience of Silent Way with other devices, please let us know and we'll update the chart.
Note: This chart was quite actively updated when Silent Way was first released, back in 2009. Since then, the assumption has gradually become that most synths/modules will work fine. In addition to the below, you might like to search for your synth of interest on the Muffwiggler forum.
Manufacturer Module/Synth Comments Tested by
Alesis A6 Andromeda See this thread. Infrablue
Analogue Systems RS-95 VCO The useful range of pitches is biased towards the top end of the voltage range. Setting the VCO's frequency control to +1 octave allows it to cover a better range of notes for most purposes. Also, using the "CV-in vary" input with the level set to, say, 0.5V/octave lets you cover a wider range of pitches from the limited output range of an audio interface. Expert Sleepers
Analogue Systems RS-110 Multimode Filter This filter module is capable of self-oscillation when the resonance is turned up, and works perfectly well as an oscillator in this mode. Expert Sleepers
Analogue Systems RS-380 Modulation Controller This module has an LFO with a CV frequency control. It has a Hz/volt response, and can be used as a VCO with a tracking range of about 3 octaves. Set the 'Range' switch to 'High' and the frequency control to about 12 o'clock. Expert Sleepers
ARP Instruments, Inc. Odyssey MkII Scot Solida
ARP Instruments, Inc. Odyssey Mk3 video WMP
ARP Instruments, Inc. Axxe See this thread CalvaryBand
bubblesound uLFO "6 octaves in 'high mode'" - see this thread. jules
Buchla 261e see this video. brandonrsmith23
Cwejman VCO-2RM See this thread. Navs
Cwejman MMF-1 See this thread. Navs
Cynthia Zeroscillator See this thread. Navs
Doepfer A-110 VCO justin3am
Doepfer A-111 High-End VCO deastman
Doepfer A-111-5 Synthesizer Voice Module version of the Dark Energy synth. phono
Doepfer A-105 filter See this thread. Navs
Electronic Music Studios EMS VCS3 See this thread for details of how this was achieved. Scot Solida
Future Retro XS "Silent Way is a lot more accurate than the built in [MIDI/CV converter]" - see this post. WMP
Harvestman Hertz Donut Steve @ Monorocket
Harvestman Piston Honda Steve @ Monorocket
Harvestman Polivoks VCF tracked self oscillation Steve @ Monorocket
Harvestman Malgorithm See this video. Expert Sleepers
Korg MS-10 See this thread. untinyunity
Korg MS-20 Requires a voltage offset to work well. See this thread. doctorvague
Korg MS-50 See this thread. sempervirent
Korg X-911 See this thread schmuck
Korg Monotron
Livewire Electronics AFG (Audio Frequency Generator) justin3am
Livewire Electronics Dalek Modulator Steve @ Monorocket
Livewire Electronics Vulcan Modulator Steve @ Monorocket
Livewire Electronics Dual Bissell Steve @ Monorocket
Livewire Electronics Frequensteiner tracked self oscillation Steve @ Monorocket
Make Noise DPO See this thread. mkndr
Malekko Oscillator Steve @ Monorocket
Malekko Anti Oscillator Steve @ Monorocket
Malekko Borg Filter 1 tracked self oscillation Steve @ Monorocket
Metasonix R-54 Supermodule See this video from this thread. Also see this (older) video. noisythang
Metasonix KV-100 Assblaster See this thread. corex
MFB Kraftzwerg See this thread. bsmith23
Modcan 01B See this thread. Gordon Cole
Moog Minimoog Model-D "Using the QMVS-48 adapter cable for the S-Triggers." Scot Solida
Moog Minimoog Model-D "with Studio Electronics CV Retrofit" CalvaryBand
Moog Realistic Concertmate MG-1 Guido Zen
Moog Prodigy See this thread. schmuck
Moog Source See this thread. string56
Moog MF-101 Low Pass Filter See this video. noisythang
Moog MF-102 Ring Modulator See this video. noisythang
Moog MF-107 FreqBox See this video and this video. noisythang
Moog 921 VCO Zahir Manek
Mutable Instruments Braids See this thread. mkndr
Oakley Sound Systems VCLFO See this thread. SepticUnderground
Oakley Sound Systems SVCO Suit & Tie Guy
Oberheim SEM (with patch panel) Ben Pebley
Octave The Cat See this thread. Kit Kat
Plan B Model 15 Complex VCO deastman
PulpLogic monotron-E FSK1138
Roland Jupiter 4 See this thread CalvaryBand
Roland SH-101 "Perfect tuning over a three octave range."
See also Brandon Daniel's video
Scot Solida
Roland SH-1 CalvaryBand
Roland SH-2 justin3am
Roland SH-5 See this thread schmuck
Roland System 100 (model 101) See this thread schmuck
Sequential Circuits Pro-One video WMP
Serge DSG See this thread. antenne
Serge VCFQ See this thread. antenne
Serge PCO See this thread. antenne
Serge NTO See this thread. antenne
Serge FREQ See this thread. antenne
Synthesis Technology MOTM-300 See this video. Adam Schabtach
Synthesis Technology E340 Cloud Generator Brent Daniels Q-106 Scot Solida
Teisco S-60F See this thread. WhiteCat
Teisco S-110F CalvaryBand
TipTop Audio Z3000 Smart VCO deastman
TipTop Audio Z8000 Matrix Sequencer See this thread wetterberg
Yamaha CS-30 "works nicely now over a huge 7 octave range" - video WMP
Yamaha CS-15 See this thread schmuck
Yamaha CS-5 Need to reverse the Gate Open and Gate Closed voltages. Tomasz

VCAs tested with Silent Way CV Input

The following modules have been successfully used with Silent Way CV Input. If you have any experience of Silent Way with other devices, please let us know and we'll update the chart.
Manufacturer Module/Synth Comments Tested by
Cwejman VCO-2RM Using the DC-coupled ring modulator part of this module. This module works in Silent Way CV Input's Bipolar Mode. Navs
Cwejman VCA-2P NB 'linear mode' on this module appears not to be quite linear. Navs
Analogue Systems RS-380 Modulation Controller Using the VCA part of this module. Expert Sleepers
Doepfer A-132-1 VCA Navs
Doepfer A-133 Polarizing VCA This module works in Silent Way CV Input's Bipolar Mode. Navs Q108 VCA Scot Solida