Latest News

DLD firmware update: version 5 Thu, Aug 25, 2016
New firmware is now available for the DLD. Version 5 adds new features and tightens the timing, allowing the DLD to sync to a variety of external clocks.

New features:

  • Ping Lock for each channel
  • Quantized Inf/Rev/Time Change Mode
  • 24-bit audio (selectable with a jumper)
  • Reverse and Inf Hold can be toggled with gates or triggers
  • Delay Feed knob can be selected to be audio or linear taper
  • Runaway DC at high feedback settings (e.g. resonant delays) is eliminated
  • Auto-Muting now has a 1ms attack and decay
  • Cross-fade Time (CFT) for splices is now variable (set in System Mode from 0ms to 500ms)
  • Selection of External Clock De-jittering algorithms to allow the DLD to sync with many types of external clocks
  • Exiting Infinite Hold plays through, without restarting loop

New Spectal firmware! Thu, Dec 31, 2015
Pleased to announce a new version of the Spectral Multiband Resonator firmware. New features include:
  • Ability to edit 1V/octave tracking compensation and offset
  • Edit Custom Scale mode allows for A/B'ing notes with the Fast|Slow switch
  • Fixed minor display issues, including flickering of slider LEDs

Download it here: Spectral Multiband Resonator (click the Manuals tab)

Spectral Multiband Resonator -- Demo at Control Voltage Portland Fri, Sep 4, 2015

Thanks to everyone who came out to Control Voltage on Wednesday to see the Spectral explained!

Demo at Analogue Haven Fri, Aug 28, 2015

Spectral Multiband Resonator -- User Manual Fri, Jul 31, 2015
The User Manual for the Spectral Multiband Resonator is out!

Download here
Tokyo Festival of Modular Sat, May 16, 2015

We're at the Tokyo Festival of Modular! Come by our table at SuperDeluxe in Roppongi, Toyko! Saturday May 16 and Sunday May 17. 5pm-11pm

More info here: TFoM 2015

Lullabies at Messe: Spectral and Dual Looping Delay Wed, Apr 29, 2015

Gearslutz interview at Messe 2015: SMR, DLD, Sampler Wed, Apr 29, 2015

Analogue Zone at Messe 2015: DLD, Sampler, Spectral Wed, Apr 29, 2015

Sonic State at Messe 2015: Spectral, Delay, Sampler Wed, Apr 15, 2015

Spectral Multiband Resonator with KOMA Komplex Sequencer Wed, Feb 4, 2015

Spectral Multiband Resonator Demo videos from NAMM 2015 Wed, Feb 4, 2015

Sonic State interview

Analogue Zone interview

NAMM 2015: Hall A, Booth 6990 Wed, Jan 7, 2015

4ms will be at NAMM, with some new products!

Come by our booth and play with our new products announcements. We're at booth 6990 in Hall A.

RCD and SCM Sale! Tue, Dec 30, 2014
Buy an old version (1.0.4) of the SCM or RCD for $150. While supplies last...

RCD sale

SCM sale

The new version adds clock bus support, LED dimmer trimpot, and improved outputs. Both old and new versions are 100% compatible with all breakout modules.
SISM video Fri, Nov 21, 2014

SISM Manual -- Newbie no longer! Wed, Oct 1, 2014

The SISM manual is not only for owners of our lovely new module, but it's an excellent reference for anyone using a modular system. Basic concepts such as DC offset, Bi-polar vs. Uni-polar, switched jacks, and more are explained!

Read the SISM manual now, and be newbie no longer!

Announcing the SISM! Fri, Sep 26, 2014

Announcing a new module from 4ms: Shifting Inverting Signal Mingler (SISM)
The SISM is a 4-channel voltage manipulator that can scale, invert, attenuate, shift (dc offset), mix, split, and slice your CV and audio signals.

A plethora of red and blue LEDs (14) show exactly what each channel and output jack is doing: red = negative voltage, blue = positive.

Each channel is independent and has an input jack, output jack, a knob for attenuating/inverting (Scale), and a knob for applying positive or negative DC offset (Shift).

Four jacks on the bottom combine the four channels in different ways. Mix is a straight mix of all four shifted inputs, Switched Mix is a mix of all channels that have nothing plugged into the OUT jack, Positive Slice is the sum of all output voltages greater than zero volts, and Negative Slice is the sum of all negative voltages.

By Shifting some channels positive and some negative, the + Slice and - Slice jacks can be used as sub-mix outputs. Also, by running a slow triangle wave into one channel, the remaining channels can be made to "dirty pan" between the Slice jacks: the signals are half-wave rectified as they span between both outputs.

Channels 1+2 and 3+4 are normalized together on the input jacks, which is handy for splitting a signal into two or more altered forms. Jumpers on the back allow you to disable this normalization.

Each channel also has a jumper to make the Scale knob unipolar (no inverting, attenuate only). This is useful for mixing audio instead of CV. A breakout header allows for padding of the signal (useful for fine-tuning a precise voltage such as 1V/oct).

The SISM is 12HP wide, and 22mm deep.
It consumes a maximum of 51mA on the +12V and 51mA on the -12V rail.

Retail price: $175

Ships October 27

Read more about the SISM...

Come visit us at KnobCon Fri, Sep 12, 2014

We'll be at Knobcon in Chicago, Sept 12-14. Come visit our table, demo our latest modules and preview up-coming releases. Our Modular Row cases will be stacked higher than ever!

4MS QCD Expander Sale Fri, Aug 15, 2014

Modular Row Octagon! Thu, Aug 14, 2014

Eight Modular Rows and eight 45° angle pieces = this:

Welsome Nerd Audio in Chicago Sat, Jul 26, 2014
Just shipped our first batch of modules to Nerd Audio in Chicago. Welcome!

New dealers for 4ms Mon, Jun 16, 2014
Welcoming two new dealers for 4ms!

Rubadub in Glasgow, UK

Clock Face Modular
Clock Face Modular in Japan

Modular Row: sneak peeks Tue, Jun 10, 2014

The metal is back from the anodizer, and we are about to start assembling the Modular Row cases.
The all-black versions will be limited in quantity and available only direct from us.

Modular Row: pre-production 12U Wed, May 14, 2014

We all sat around the table yesterday and assembled a pre-production Modular Row rig to send to Keith McMillen Instruments. This one uses the exact same parts as the final units, except the end caps and back plates will be anodized.
The shallow rows (2") and deep rows (3") line up nicely, and I'm really digging how the three 30 degree angles make a nice smooth 90 degree total sweep...
The whole thing is powered by four ROW POWER 30's with some flying bus cables and a Bus Stick.
416HP/12U of fun!!

Modular Rows version 2 protos Wed, Apr 2, 2014
Preview the latest revision to the Modular Rows: -Heavier latches (butterfly style) -Thicker aluminum end caps (0.25") Coming soon!!

QPLFO Videos from Big City Thu, Feb 27, 2014

Clock Face Modular Thu, Feb 27, 2014

Pleased to announce Clock Face Modular in Japan as a dealer of our Eurorack modules!
ROBOTSPEAK Fri, Feb 7, 2014

We are pleased to announce ROBOTSPEAK in San Francisco is now carrying our modules. Next time you're in the Bay Area, be sure to stop by this legendary store on Lower Haight.
NAMM 2014 Demo, by Andreas Schneider Fri, Jan 31, 2014

4ms alias Dan Greene introducing their news and updates on NAMM 2014 from Andreas Schneider on Vimeo.

Modular Row Carrying Cases... Mon, Jan 13, 2014
Carryng case options:

NAMM 2014 Thu, Jan 2, 2014

See us at the coolest booth at NAMM this year: Booth 1076 (Hall E)
We'll be showing off our new cases, the Modular Row Modules, as well as our power solution: ROW POWER. Come play with all the 4ms modules, including the QCD and the new QCD Expander... and some surprises!

Modular Row Modules Mon, Dec 23, 2013

The aluminum came back from the anodizer... beautiful matte black and matte clear. See some photos here
ROW POWER Wed, Dec 18, 2013

Sneak a peak at our new power solution: ROW POWER

Now accepting beta tester applications.
Email us for information.

QCD and BUFF MULT available! Fri, Dec 13, 2013

The BUFF MULT and the Quad Clock Distributor (QCD) have started shipping! Get them from your favorite dealer!
Holiday Sale: $75 wooden case Wed, Dec 11, 2013

We dug around the shop and found some more power supplies and some nice wooden end-caps.
We have a limited number of these Simple Eurorack Rows with wooden end caps for sale for $75.
They are ready for modules.
More details here...

Announcing the 4ms BUFFMULT Fri, Dec 6, 2013
Only $79.
Ships next week.
In the mean time, read the all-important USER MANUAL
PEG hack: Change the LED brightness Fri, Nov 8, 2013

MMTA Synthfest Fall 2013 Sun, Nov 3, 2013

4ms on tour.... Sat, Oct 26, 2013
Catch 4ms in Seattle at the MMTA Synth Fest on Saturday, and then magically on the other coast on Sunday for the Trash Audio Event in Asheville NC.

See our new Modular Module Row case prototypes and the new QCD!

Modular Row Modules Thu, Oct 10, 2013

QCD videos from Ebotronix Thu, Sep 26, 2013

Another QCD Preview: Wed, Sep 18, 2013

The Quad Clock Distributor (QCD) and the QCD Expander modules from 4ms Company are an amazing pair of complex rhythm generating machines. The QCD is the perfect master clock, with a tap-tempo button and four CV-controlled Divided/Multiplied clock outputs. All the beat patterns you hear are coming from this module (plus other 4ms gear such as the RCD, SCM, and PEG), using various QCD channels to modulate themselves.

Swing/shuffle patterns are easily obtained by modulating the pulse width of the inverted gate output. The speed-up/slow-down patterns come from modulating the clock divider/multiplication amount (with an LFO and/or another synced clock). Finally, hitting Reset at various times causes phase modulation.

For more information on the Quad Clock Distributer, see
Video: QCD Sneak Preview Fri, Aug 30, 2013

We're about to officially announce the QCD price and ship date, in the mean time, enjoy this video...
Quad Clock Distributor and QCD Expander Tue, Aug 6, 2013

We have a new prototype of the Quad Clock Distributor and the QCD Expander... very happy with these ones!!

Quad Clock Distributor:

  • Four independent or sync'ed clocks
  • Tap tempo button and five clock outputs make the QCD perfect for head-of-the-chain "Master" clock module
  • Create complex rhythmic patterns by using channels to modulate other channels' clock Division/Multiplication amount
  • Tap clock output runs at the tapped tempo (even if other channels are being clocked externally)
  • Each of the four channels has an independent clock IN, OUT, Reset and Div/Mult
  • Divide or Multiply incoming clock from /64 to x64 on each channel:
    • Detented knob to snap to integer division/multiples
    • CV jack to modulate Div/Mult amount
  • Reset jack per channel restarts the clock when a trigger is received (alters phase of clock)
  • Clock input jacks are normalized downwards: Tap->Red->Black->Blue->Green
  • Clock outputs stop automatically when incoming clock stops
  • LEDs blink to output clocks' tempos
  • 10V clock output pulses, fully buffered. Default is square-wave, but PW is controllable with expander
  • Daisy chain multiple QCDs or other clock modules using Tap Out jack
  • Header on the PCB to connect to QPLFO to provide four CV Skew-able, CV Div/Mult-able envelopes
  • Interfaces with QCD Expander for more features...
  • 10HP

QCD Expander:
  • Connects to QCD main module with a 16-pin cable
  • Pulse Width control for each channel, expressed as a percentage (duty-cycle) of total time (e.g. 50%, or 10%)
  • PW jack and attenuverter to modulate Pulse Width
  • Attenuverter for Div/Mult jack from the main module allows for fine tuning the tempo shift
  • Second set of output jacks provide a duplicate of the clock outputs. Very useful for using channels to modulate other channels
  • 12HP

Black VCAMs Tue, Jul 9, 2013

We made a special run of Black VCAMs... limited numbers available. Soon there will be a special contest to win one! Stay tuned...
QCD Prototype Test (14hp version) Mon, Jul 8, 2013

New Eurorack case and power systems! Tue, May 28, 2013

Announcing our new line of eurorack case and power solutions.

We now offer a variety of pre-made and DIY kit options to help you get started in Eurorack, or upgrade your existing system:
-Simple Eurorack Row: A basic low-cost open-frame case. Pre-built or DIY kit.
-Eurorack Power Distro Board: Full-featured power distribution board (bus board) for building or upgrading your case. Pre-built or DIY Kit.
-Mini Euro Power System: Small, simple, complete power solution for powering up to a row of modules. Pre-built or DIY kit (forthcoming).

4ms Interview with synthé-modulaire Mon, May 13, 2013
Wilfried of synthé-modulaire interviewed Dann Green of 4ms, en Français:

DIY Eurorack case building workshop Wed, May 1, 2013

4ms is leading a Eurorack Case Building workshop at Control Voltage in Portland. Sunday May 12, 3pm-5pm.
We'll be building a single row open-frame case (104HP) including the power supply. This is a great way to get into Eurorack, or just get another row in your system (not to mention bragging rights that you built your own modular synth case). All supplies and materials are included, just show up, and when you leave you'll be ready to start plugging in modules! No solder experience required.

As of now, there are still seats available, so reserve your spot with Control Voltage:
More info / Sign up

Four new Modular Wild videos Tue, Apr 23, 2013

QPLFO Basic Features video Thu, Apr 18, 2013

New video highlighting the basic QPLFO features...

Also the USER MANUAL is now available

Panel Templates now available Fri, Apr 12, 2013

If you want to make your own panel for your 4ms modules, it's now even easier. Our panel templates are now as PDFs:


QPLFO updates Mon, Mar 25, 2013

We're just waiting for the final panels to begin assembly of the QPLFO.

QPLFO teaser video Fri, Mar 22, 2013

Quad Pingable LFO (QPLFO) Wed, Mar 6, 2013

Announcing the Quad Pingable LFO (QPLFO)

  • Four independent LFOs:
    • Ping input jack
    • Tap tempo button
    • On/Mute button (latching)
    • Skew CV jack and knob
    • Reset jack
    • LFO output
    • LED indicates output level
  • Timing of each LFO is set by a clock (ping), either external or internal (tap tempo)
  • Ping button flashes to the incoming ping signal or internal tap clock
  • Mute/On button mutes the output, lights up when "On"
  • Skew CV gives continuous transition from ramp-up, to triangle, to ramp-down without changing overall length of curve
    • Knob provides offset for signal on the jack, or manual control if nothing is plugged into the jack
    • Minimum setting gives "plucky" curve (psuedo-expo fall)
    • Full range is 10V, so one LFO channel can be used to modulate another channel's Skew
  • Outputs can be polar or bi-polar: Jumper selects 0 to +10V (e.g. for driving a VCA), or -5V to +5V (e.g. for modulating parameters)
  • Reset jack re-starts LFO immediately
    • Reset changes the starting point of the LFO with respect to ping clock
    • Allows for easy quadrature outputs
    • Pressing the On/Mute button can optionally send a reset pulse (jumper must be installed)
  • Comparators on ping and reset jacks allow for any waveshape to be used for inputs
  • With an optional ribbon cable, ping jacks can be normalized to QCD clock outputs
  • 12HP, 1.5” deep
  • Price $295
  • Available: April 25, 2013 (watch or "4ms Company" on Facebook for updates)

Read more about the QPLFO (manual, etc...)

More press... Sun, Mar 3, 2013
This week's random 4ms press is about one of our effect pedals.

This week's random press... Wed, Feb 13, 2013
From the Chicago Reader:

PAG demo videos Sat, Feb 2, 2013

Sonic State interview

PAG doing a rotating tetrahedron effect (no, this isn't a MS WINDOWS 95 screensaver

PAG curve/skew modulation

NAMM booth 2013 Wed, Jan 30, 2013

Thanks to everyone... we had a blast at NAMM 2013 and look forward to releasing some exciting new modules this year!!

New modules from 4ms Mon, Jan 21, 2013

We will be demoing 6 new modules at NAMM! Hall E, booth 1170

  • Quad Clock Distributer (QCD)
  • Quad Pingable LFO (QPLFO)
  • Shifting Inverting Signal Mingler (SISM)
  • Pingable Animation Generator (PAG)
  • PEG Parameters (PEGP)
  • VCA Matrix Connector (VCAMx)

Come by and play....

Pingable Animation Generator beta Thu, Jan 3, 2013

We've been playing with the PAG (Pingable Animation Generator) beta version 2. Look for it at NAMM.

  • Two channel animation (curve) generator uses LZX Visionary sync header
  • All outputs and CV inputs are scaled to 0-1V, for compatibility with other LZX Visionary modules (trigger threshold is 0.5V)
  • Each channel has two CV outputs: ENV (non-inverted, 0V to 1V) and 1-ENV (inverted, 1V to 0V)
  • Each channel has two gate outputs: End-of-Rise/Hold, and End-of-Fall
  • Trapezoidal waveforms (fade-in, hold, fade-out) can be obtained with the Hold jack and knob, which sets the ratio between the total fading time and holding time.
  • VCA input modulates the amplitude of the ENV and 1-ENV outputs (limited video-rate)
  • Link button connects Ping clock of two channels
  • At output frequencies less than the frame rate clock, all outputs update only at the top of each frame. This prevents ugly "chops" in the middle of frames
  • At frequencies greater than frame rate, the outputs are re-synced at the top of each frame
  • Tap/ping clock can be divided/multiplied from /64 to x64
  • Many similar features to the PEG:
    • Time length of animation curve (ping clock) is set by tap-tempo or external ping clock
    • Curve selection is linear, exponential, or log, or any combination, including blends (e.g. 25% log, 75% linear).
    • Skew sets the ratio of rise (fade-in) and fall (fade-out) times
    • CV inputs for all parameters (Div/Mult, Skew, Curve, Hold)
    • Trigger input for each channel
    • Cycle mode button for each channel

SCMBO version 2 kit Wed, Dec 5, 2012

Kit now released for SCM Breakout version 2.
Retail price: $99
>>>SCMBO kit
SCM Breakout Version 2 released Thu, Nov 8, 2012

Now announcing the release of the SCM Breakout version 2!

  • New features for version 2:
    • Mute and 4x Fast are LED buttons
    • Pressing Mute or 4x Fast inverts the signal on the jack
    • Knobs are centered straight up (12:00)
    • Rotate and Slip knobs attenuate the breakout jacks, and the corresponding jacks on the m ain SCM module are added to this attenuated signal. If nothing is plugged into the Rotate or Slip ja ks on the breakout, the knob functions as a manual control (same as it did on version 1).
  • Expands the features of the SCM:
    • CV Shuffle jack and knob selects which beats are slipped by CV Slip (default=every other beat)
    • CV Pulse Width jack and knob controls width of output pulses (default=50%)
    • CV Skip jack and knob omits certain beats in a pattern (default=no skip)
    • Re-sync Trigger input
    • Additional CV Rotate and CV Slip jacks add to main SCM's Rotate and Slip jacks
    • 4x Fast CV Gate jack and switch speeds up multiply-by amounts
    • Mute CV Gate jack and switch stops any more beats from starting

SCM Breakout version 2 is available from our dealers for a retail price of $150. The kit is forthcoming, estimated release Dec 20.

4ms is moving! Mon, Sep 24, 2012

We're moving from Austin to Portland! From Sept 24 to Oct 1 we will be moving our shop. Please accept our apologies for any delay in replying to emails, but we will be back up and running shortly.

Pingable Envelope Generator kits Mon, Jul 30, 2012

Pleased to announce that PEG kits are now available:

PEG kit
Build guide
Parts list

Q: How hard is this kit to build?
A: This is an intermediate level kit: there's more components than the RCD/SCM kits, and it has two PCBs which stack together. The PEG has the same type of step-by-step photo guide for the build instruction manual. Beta testers and early builders report a nearly 100% success rate!

Q: Does the kit include everything I need to build a PEG?
A: Yes, you only need tools and soldering equipment.

Purchase a PEG kit here

4ms at TRASH_AUDIO Chicago July 29 Fri, Jul 20, 2012

4ms will be appearing at the TRASH_AUDIO synth meet July 29th in Chicago. Modules and kits will be for sale at the event!
More info...

4ms at SF Bay Area Synth Meet Sat, Jul 7, 2012

4ms appears at the SF Bay Area Synth Meet!

Source of Uncertainty: Music for the Buchla Synthesizer Mon, May 21, 2012

4ms will be participating in the Source of Uncertainly Control Voltage Faire in NYC

Source of Uncertainty celebrates the Buchla 200e and DIY modular synthesis. Centering around two free New York City concerts, on June 28th and July 7th, the series is a collaborative initiative of New York-based curatorial organizations, Harvestworks and ((audience)), and takes place as part of the River to River festival. The first event will feature a modular synth fair and we will be interviewing Buchla musicians for a program on Art on Air. See bios, exhibitors, links below.

Thurs June 28th // South Street Seaport // 210 Front Street NYC
Control Voltage Faire 3-8pm
Buchla Recital ft Alessandro Cortini, Carlos Giffoni, Mark Verbos 8-10
Late concert ft Xeno & Oaklander and Loud Objects


RCD Breakout version 1.1 Tue, Apr 24, 2012

New feature: Spread Mode

A new version of the RCD Breakout is now available. The feature set has been changed to incorporate Spread Mode. With Spread on, the outputs evenly space themselves across the entire division range instead of bunching up together. So instead of outputting /17, /18, /19, /20, /21... /24 in Max-Div-32 mode, it will output /4, /8, /12, /16, 20... /32. Rotating will cause the outputs to change by +/-1 which preserving the even spacing, so it will next rotate to /5, /9, /13.../29, /1

Also, in Max-Div-8 (fastest) mode, Spread will output only "musical" divisions based on triplets and sixteenth notes: /1, /2, /3, /4, /6, /8, /12, /16. Rotating in this mode will rotate amongst these musical divisions, so you will never get a /7 or /13.

What's new:
Skiff-friendly (48mm) RCD and SCM Mon, Apr 9, 2012

48mm deep
The latest version of the Rotating Clock Divider and Shuffling Clock Multiplier are now 48mm deep, making them friendly with most skiffs and low-profile cases. All clock modules and kits shipped in 2012 are already the new low-profile depth!
Modular Meet-up at 4ms, Friday Feb 24 Tue, Feb 21, 2012

The second Austin modular synth meetup is was at the 4ms studio at 4704 East Cesar Chavez this Friday at 7pm. Bring your modular rig if you like, or we have plenty to go around.
Free, casual, fun.
Shoot us an email if you want more info.

New SCM firmware officially released Tue, Feb 14, 2012
A new version of the firmware for the Shuffling Clock Multiplier is out! Version 1.0.4 runs tighter, with less jitter (as can be detected using a modular video system), and an issue with spurious triggers has been fixed.

The firmware is available for free here if you wish to flash it to your SCM using an ISP programmer (such as the AVR ISP).

Or you may purchase a replacement chip for $6 here

PEG Audio Rate demo Fri, Jan 20, 2012

Demo of the Pingable Enevlope Generator run at audio rates

PEG Parameter Controller : New module at NAMM Fri, Jan 20, 2012

The latest from 4ms, an expansion module for the Pingable Envelope Generator (P.E.G.) is being demonstrated at NAMM this weekend.

PEG Parameter Controller: 16 LED push buttons give access to all the system parameters of both channels on the PEG:

  • Sync vs. Async modes: View current state and change between modes
  • Gate or trigger for EOF/EOR jacks
  • End-of-Fall or direct Tap Tempo Clock output for EOF jack
  • End-or-Rise or Half-Rise output for EOR jack
  • Skew Limiting (max 6ms rise or fall, no matter what CV/knob setting)
  • Enable/disable ASR envelopes when gated with the ASync jack
  • Force PEG to stop when external ping clock stops

4ms at NAMM Wed, Jan 11, 2012
We'll be at NAMM in sunny Anaheim again this year. Look for our stuff at the Analogue Haven and Big City Music booths!
Firmware Update for Pingable Envelope Generator Sun, Dec 25, 2011
New version 4 is out! New features include:
  • System Mode allows re-configuring jacks and parameters:
    • Select trigger or gate output for EOR/EOF
    • Assign EOR or Half-rise to EOR jack
    • Assign Tap Tempo Clock (pre-divider/multiplier) to EOF jack
    • Enable Skew Limiting to limit maximum rise or fall time to 6.5ms
    • Require a continuous ping clock
  • Fixed glitching when rapidly changing parameters

Download the PEG User Manual version 4
Download PEG Firmware Version 4
How to Upgrade Your firmware
Or email us to arrange for upgrade chips to be mailed to you

Eurorack Noise Swash kit now available Sun, Nov 27, 2011

The kit for the Eurorack version of the Noise Swash is now available!

See the Euro Swash here: Eurorack Swash

New Dealer: MeMe Antenna in Brooklyn, NY Wed, Nov 16, 2011

We're proud to be among the first eurorack module manufacturers to be carried by MeMe Antenna in Brooklyn, NY, USA. They currently stock some of our Eurorack modules (Noise Swash, Atoner, Rotating Clock Divider, and Shuffling Clock Multiplier). Stop by their storefront in Brooklyn, or visit online at
Pingable Envelope Generator Wed, Oct 5, 2011

User manual (updated Nov 25, 2011)

Official release of the Pingable Envelope Generator!

The Pingable Envelope Generator (PEG) from 4ms is a dual envelope generator whose envelope lengths are set by incoming clocks or “pings”.

The PEG has full CV control of envelope shape, skew, and ping (clock) division/multiplication, as well as a plethora of triggering and cycling options (AD, AR, quantization, cycle), and a tap tempo button for each channel.

Retail price: $345
Availability: October 31, 2011



  • Dual “pingable” envelope generator – total envelope time is set by a “ping”
  • Tap tempo button or incoming clock sets the ping time
  • Envelope time is a multiple or division of the ping time (from /8 to x8) set by Ping Div/Mult knob and CV
  • Curve knob and CV control the shape of the output envelope – various combinations of exponential, linear, logarithmic, and interpolated curves are available for the rise and fall portions
  • Skew knob and CV control the ratio between rise and fall times without changing total envelope time

--- Read more >>>

Pingable Envelope Generator Wed, Aug 31, 2011

Wrapping up the beta version for a final round of testing! We'll be at the Trash Audio Synth Event in LA on Sept 10.

PEG Prototype v2: CNC Milling Mon, Jul 25, 2011
Milling out a prototype (rev2) for the Pingable Envelope Generator...

VCA Matrix manual Fri, Jun 24, 2011
We've released the VCA Matrix manual and quick-start guide. The manual details some of the more interesting and unique features of the VCA Matrix, such as Soft Limiting, combination log and exponential response curve, ability to use it as waveshaper, 1V/oct tuning, and more.

VCA Matrix User Manual 1.0

And a video demonstrating one of the patches from the manual (Hybrid 1V/oct and cross modulator patch):

Big City Music test of VCA Matrix Wed, Jun 22, 2011

VCA Matrix videos Tue, Jun 14, 2011

Two new VCA Matrix test videos. The first is from Joesph Pailo, demoing his pre-production black panel VCA Matrix:

The second is a little late night jam at the 4ms studio...

VCA Matrix update Fri, Jun 3, 2011

We're wrapping up the first batch of the VCA Matrix. We're very happy with the final panels (see above photo), and look forward to shipping this to our dealers in about a week!

Retail price: US$375

Read more about the VCA Matrix...

Also an interview with Schneidersbuero at Musikmesse 2011

MusikMesse 2011 Demo videos Sat, Apr 23, 2011

Here we are at MusikMesse demoing our newest products for the Eurorack modular synthesizer system: the VCA Matrix, a 4x4 matrix of 16 VCAs with mute buttons, manual level pots, and CV controls... And the Pingable Envelope Generator (PEG), a wavetable-based dual envelope module that synchronizes the length of the envelopes to a division/multiple of an incoming clock time.

The VCA Matrix has 4 clocks from an SCM running into the inputs, and the outputs are controlling the pitch, wave folding, and filter amount of a basic VCO/VCF patch... this is generating the repeating melody line.

The PEG is generating two envelopes which are modulating the Morph and FM of a Morphing Terrarium module. Both envelopes are triggered by a shuffled SCM output.

Demonstrating the Pingable Envelope Generator, the newest Eurorack module from 4ms. The PEG is a dual envelope module, with the unique feature of always synchronizing the envelope lengths to a clock (or a division/multiple of the clock). The envelope curve (lin/log/exp/etc) and skew (rise/fall ratio) can be altered without changing the overall envelope length.

In this patch, the two envelope outputs of the PEG are modulating the FM (pitch) and the Morph Z of an E350 Morphing Terrarium.

4ms on tour: Chicago, Frankfurt, Berlin Wed, Mar 30, 2011

From April 2 to April 18 we'll be touring with our new VCA Matrix and Pingable Envelope Generator

Eurorack Atoner kit now available! Mon, Mar 21, 2011

Just released the kit for the Eurorack Atoner module. Straightforward build with a clear photo tutorial guide.

Buy a Euro Atoner kit here

VCAMatrix Engraved Panel Fri, Mar 4, 2011

We did a lil' test run of our new CNC benchtop milling machine, engraving a VCAM panel.

Recording of Club 1808 show in Austin TX Sun, Feb 20, 2011

We got a nice recording of me (Dann) playing my rig at Club 1808 last wednesday. Billy and Eitel of Killa Dilla captured it with a direct line and two room mics, and later mixed it down through Allen and Heath console.

Feb 16 @ Club 1808 by 4ms

Using 4ms RCD/SCM, Atoner and Swash; Malekko/Wiard Anti-osc, Envelator and Borg; Doepfer A-105's; Makenoise MATHS, Serge/Bananalogue VCS; modified AS SD-88 and HH-88, a custom 4ms VCA Matrix and a few other custom modules I hacked together for myself.

4ms at NAMM: Sonic State interview Fri, Jan 21, 2011

A brief intro to the VCA Matrix and Pingable Envelope Generator

4ms will be was at NAMM this year, demoing the VCAM proto and some other goodies.

VCA Matrix Prototype Wed, Dec 15, 2010

We're coming out with a new Eurorack module, a playable 4x4 VCA Matrix. The mockup is of the prototype and is subject to change before production. Four inputs can be routed in any amount/combination to four outputs, using the 16 CV jacks, knobs, and mute buttons. Features include:

  • 4 CV/audio inputs and outputs (dc-coupled)
  • 16 VCA's using high quality SSM chips
  • Playable surface with 16 LED latching "Punch In/Out" buttons to mute each VCA (mute button disconnects CV jack and Offset knob, and silences the VCA)
  • LED brightness indicates sum of CV jack, Offset knob, and mute button
  • 16 knobs to set the offset (center gain) of each VCA
  • 16 CV jacks for VCA level. Jacks are normalled together in columns, and along row 1
  • Expandability: VCAM's can be connected to form a larger matrix (4x8, 8x8, 12x4, etc). Also a gate header on the PCB will allow for connection to forthcoming programmable/sequencable control surface module
  • Suitable as a 4x4 mixer, spliter, as well as dynamic signal router
  • CV jacks go well into the audio range for FM-type sideband effects

Our next module is a Pingable Envelope Generator, which takes clock/gates from an RCD/SCM, for example, outputting envelopes to the VCAMatrix which will smoothly vary signal routings/levels at clockable rates.

Demo videos from Richard Devine Fri, Nov 26, 2010

Mutant Mechanical Dub with the 4ms RCD, SCM, Breakout Module from Richard Devine

Tripping Beats with the 4ms Rotating Clock Divider from Richard Devine

SCM Breakout now available as a Kit Wed, Nov 17, 2010

We now sell kits for the SCM Breakout module for $67. The complete kits includes a professionally milled and 4-color silkscreened panel, PCB, and all the components. We also sell just the PCB, or a kit version with no jacks or panel (for converting to a Frac/5U/other format).

Octophonic stage at Art Outside Tue, Nov 2, 2010

4ms helped run the octophonic stage at Art Outside 2010 in central Texas using a Bend Matrix as the signal router, tripping heads till 6am... yow

LZX + 4ms Demo Sat, Oct 16, 2010
Lars from LZX came over and we played AV Club. Here's some snippets:

RCD and SCM kits!! Thu, Oct 7, 2010

RCD/SCM Eurorack Module Kits available
Announcing the kit version of the Rotating Clock Divider and Shuffling Clock Multiplier. Kits are available as a complete kit (all parts, faceplate, and PCB), or as just the PCB and pre-programmed chip.

Also available: RCD Breakout kit, and DIY instructions

Free SCM Breakout replacment faceplates! Sun, Sep 26, 2010

If you already have an SCM Breakout and want to upgrade the faceplate, we have some extras that have slight flaking on the varnish around the blue areas. It's very subtle and can only be seen at the right angle in a bright light. Since our silkscreener isn't charging us for them, we're giving these away for free (you pay shipping). If anyone wants to swap out their white or silver panel for a silkscreened one (with minor flaws), send us an email.

4ms playing at Art Authority Thursday 9/23 Mon, Sep 20, 2010

4ms will be performing as part of the Continuum show at the US Art Authority on Thursday 9/23. We're scheduled to go on at 9pm. The evening will be one continuous drone-sound from 8pm until midnight with sounds from a cool cast of musicians.

Some tracks we recorded a few days ago during practice:

4ms track for KOOP radio #1 by 4ms
4ms track for KOOP radio #2 by 4ms
4ms track for KOOP radio #3 by 4ms

Eurorack Atoner manual Wed, Sep 8, 2010
New manual for the Eurorack Atoner. Explains the 10-pin jumper for clock selection!
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