MATRIXSYNTH: Tuesday, May 3, 2022

Tuesday, May 03, 2022

UDO Super 6 deeper Review (Yamaha RX-7)

video upload by Knobs & Switches

"This is my personal Review about the UDO Super 6 with a little help from my Yamaha RX-7. All the Sounds and some Drums (Drums on the Intro Song) are made with the Udo Super 6."

"Filter the Kick Drum" (Modular Synth Freestyle) - Minimal Tech House Music

video upload by The Galaxy Electric

"A casual freestyle with the buchla modular synthesizer, vocals, live looping, tape loop techniques affecting speed, pitch, and groove."

Sequencer Madness

video upload by George Benton

"Using the Q963 Trigger Buss to select which of the 8 triggers goes to the Q960 or the Q119. This creates some interesting patterns. Each Seq has a voice going to left and right channel.
Adding some delays and reverbs.
Lots of stereo image going down."

Percussa Updates SSP Eurorack Module w/ 3D Graphics, Plugin SDK, Scanning Oscillator & More

via Percussa


May 2nd, 2022 (Los Angeles, CA) Percussa, makers of the Super Signal Processor (SSP) Eurorack module, are set to return to the SUPERBOOTH show in Berlin, May 12-14 2022, since the COVID-19 pandemic started, and are presenting a major software update for the Percussa SSP.

Percussa has been working on a software update for the SSP since its last participation in the show in 2019, featuring a complete graphics rewrite, leveraging the previously unused GPU processor on the SSP, for accelerated 2D and 3D graphics. Additionally, the SSP's plugin SDK has been updated to enable plugin developers to use the GPU as well for 2D or 3D graphics via OpenGL(ES).

Graphics acceleration on the SSP and GPU support in the plugin SDK were stretch goals which were not reached during the succesfully funded Percussa SSP kickstarter campaign back in 2017. With this update, users will receive the features planned in these stretch goals, and the benefits of accelerated graphics and increased DSP power.

In addition to increased DSP power, audio processing optimizations, and accelerated graphics, the update features countless bug fixes and improved memory management, and comes with a new "3D wave scanning" oscillator, developed by Percussa, featuring GPU powered raytraced 3D graphics.

Since the last SUPERBOOTH show, Percussa has released several incremental updates and fixes for the SSP software, enabling 24-channel USB audio support, improving MIDI MPE support as well as improvements to the step sequencer, sampler and direct to disk recorder.

In addition to the new software update, open source developer and SSP power user @thetechnobear (Mark Harris) is releasing over 10 new plugins for the Percussa SSP, and will be demoing these daily at the Percussa SSP table at the SUPERBOOTH show. Mark has also started contributing recently to the main SSP application software, in addition to his plugin contributions, which include countless modules such as a performance mixer, matrix switchers and mixers, sample and hold modules, utility modules, and ports of open source modules such as Clouds, Rings and Plaits. More information about @thetechnobear's work can be found at Including @thetechnobear's plugins, the SSP now offers more than 50 modules in total.

The new software update is currently in BETA with the release version to be made publicly available by the end of June. The update will be available via the Percussa forum at Percussa has also opened up pre-orders for the next production batch of SSPs. The SSP can be ordered via your favourite eurorack dealer, or on Percussa's website at

Blue Lantern Gleba VCF // Walkthrough & Demo

video upload by Robots Are Red

"In this video we take a look at the brand new VCF by Blue Lantern Modules, Gleba. Based on the VCF from BLM's Dwarf Star Semi Modular Synthesizer, Gleba crams a lot of fun functionality into only 10hp.

This VCF has:
- Two audio inputs, one with attenuator
- 12db Low Pass/Band Pass/High pass filter with mix & match switches
- A screaming self oscillating resonance sine wave
- Limit switch to squash those middle frequencies for a more metallic-like tone similar to the MS-20
- Two Subharmonics Generators, 1 and 2 octaves lower
- FM modulation input with attenuverter
- CV control over resonance and frequency (with 1v/oct tracking)
- A built in VCA that is bypassed when left unpatched.

Filter, crunch up, or add character to your sounds. Use it as an oscillator, a crunchy rudimentary EQ, as a nice squelchy filter, and so much more.

Special thanks to Blue Lantern for providing the the module for the video."


Gleba Part 2 // Multi-Mode VCF/VCA by Blue Lantern Modules - Patch tips and Q Trimmer Demo

video upload by Robots Are Red

"It smells like it is time for #2! In this video we look at a few more patch examples with Gleba, as well as toning down the resonance to more classic filter levels with the Q Trimmer.

The patches covered in this video are an acid bass, gated drums, and chords through Gleba."

Korg Poly-61 Analogue Programmable Polyphonic Synthesizer

via this auction

Additional Switched On Listings

"This Poly 61 is fully functional and in good condition

The KORG Poly-61 is a programmable polyphonic synthesizer released by Korg in 1982 as their follow-up to the Polysix. It features 2 DCO's per voice, a discrete resonant low-pass VCF, and is the first synth by korg to be designed around the parameter menu & value selector user interface."

Roland JX-3P 61-Key Programmable Preset Polyphonic Synthesizer

via this auction

Additional Switched On Listings

"This JX-3P is fully functional and in great condition.

The JX-3P is a six voice polyphonic analog synthesizer with a single slider editing interface. It features 2 digitally controlled oscillators with sync and cross-mod, sawtooth, square, pulse waveforms, a noise generator, 1 LFO, 1 ADSR and a 24dB OTA based (IR3109) Lowpass filter. It has 32 factory and 32 user writable patches of memory and a built-in 128-step polyphonic sequencerer with external trigger input.

Its architecture is similar to that of the Juno series synthesizers produced around the same time. Both machines employ the same interval-timer DCO technology, have a single digitally generated envelope generator, the Roland IR3109 low-pass filter, a discrete VCA, and on-board stereo chorus effect. The Juno line had only a single DCO (with sub-oscillator) per voice, while the JX-3P had two distinct DCOs with detuning and several cross-modulation modes. Also unlike the Juno, the JX-3P allows the pitch of either oscillator to be controlled by its envelope generator."

1986 Roland JX-8P Analog Synthesizer SN 604298

via this auction

Additional SYNTH CITY Listings

"The JX-8P is a lovely sounding 8 voice analog poly synth with similar voice architecture to the JX-3P and Roland Juno series. The voice is actually quite a bit more complex than the Junos. What is gained in oscillators and modulation sources is lost in the real time control, however. There are only program buttons where numbers are typed and a single parameter slider is adjusted. This keyboard can be expanded with the Roland PG-800 programmer or connected up to an IOS app through MIDI for full access to all the controls.

This keyboard overall is in excellent condition. All of the membrane buttons and sliders function perfectly. 2-prong AC power cable included."

1988 Roland D-50 Linear Synthesizer w/ Extra ROM Cards SN 840926

via this auction

Additional SYNTH CITY Listings

"The D-50 is a very interesting digital synth that combines PCM samples with Roland's linear arithmatic synthesis method, a style of digital subtractive synthesis. The PCM samples are providing the attack sound and the LAS section will ring out or sustain. In practice some very lovely and complex sounds are easy to achieve with the D-50.

This synth is in great shape and works perfectly with just some minor cosmetic wear for its age. Includes 4 extra rom cards as pictured and original AC power cable."

Roland JD-800 Programmable Linear Synthesizer

via this auction

"Like its cousin the D-50, it is a digital 'linear synth' with analog filtering. It has all of the vibe, depth and nostalgia of a D50, with more modern editable parameters on the face of the synth - Not to mention the presets are pretty incredible. Great pad machine - ripping leads.

For those in the know, this thing is one of Roland's crowning achievements. However, also those in the know will know that the key-beds were definitely not: they are notorious for the deteriorating red glue that wrecked the beds of every single one over time. This one is no different, however I have carefully removed all of the red glue and attempted to restore the keys to working condition. That being said they still have some issues with velocity sensitivity, and aftertouch. However, those with a midi interface and or keyboard can easily have this thing fully shredding in no time."

CASIO CZ-101 Phase Distortion Synthesizer w/ Updated Display & Gold Plated Outs

via this auction

"Fully working Casio CZ-101. It was upgraded with a new blue display and new gold plated audio outs. The new display is easy to read in any condition, it makes a big difference from the original display. It comes with power supply."

Touché x Prophet Rev2

video uploads by Expressive E

"This video showcases mapping presets from our free Touché Hardware Preset Pack which contains 24 presets for Rev2 by Dave Smith Instruments / Sequential. Based on the factory presets from Rev2, they cleverly map Touché's axes to relevant parameters.

The presets need to be loaded inside Touché's companion app Lié. When recalling them, a Program Change is sent to your Rev2 in order to dial up the corresponding factory sound.

The download link is available in your Expressive E user account as soon as a Touché is registered.

Hardware Mapping Presets are only supported by our classic Touché flagship controller, not by Touché SE."

A Spotterʼs Guide to HIPs and Strings

Pictured: 1974 Hohner International String Vox (also see one posted here)

via Zen & the Art of Synthesizer Maintenance

"Anyone interested in 1970s-80s Hohner/Logan/ELKA string machines and Hohner/ELEX/Excelsior electronic pianos (some with strings voices), who has been confused by their rebadging relationships and the often dubious information online, might like to consider this new article summarising my research over the last few years:

A Spotter’s Guide to HIPs and Strings

Models covered:

• Hohner International String Vox
• Hohner International String Melody and String Melody II
• Hohner International Electronic Piano K1 (HIP / HIP II / K1)
• Hohner International K2 (Stringvox)
• Hohner International Electronic Piano K3
• Hohner International String Synthesizer K4
• Hohner String Performer
• Hohner International EK61 'Globetrotter'
• Hohner International EK 2
• Hohner C86"


• ELKA Rhapsody 610
• Logan String Orchestra"

"Not long after the technology became reasonably affordable, Matth. Hohner AG sold several electronic piano and string machine models under their ‘Hohner International’ brand, apparently aiming at cheapness and portability compared with their acoustic and electromechanical keyboards. Most of these were either rebadged ELEX (Excelsior) products or perhaps Hohner-inspired modifications of them. Some were rebadged ELKA and Logan instruments, and they produced a couple of their own designs. [1] (Hohner did also produce organs, bass keyboards and pedalboards, acoustic and electromechanical piano-like instruments amongst others, but thatʼs not todayʼs topic.)

The plethora of these instruments from different manufacturers, some sold as Hohner, some not, some easily distinguished, some not, some modified either inside or out over their production span, has led to a certain amount of confusion in the years since, and poses a puzzle for people interested in obtaining and/or repairing them. But perhaps itʼs possible to construct a comprehensive overview which will allow them to be identified and distinguished?"


Buchla 212 Dodeca Feddback Experiments

video upload by Todd Barton

"Some short and casual experiments exploring audio feedback within the Buchla 212 Dodeca Module."

Deckhead - First track using Future Retro "Vectra" Synthesizer!

video upload by Electronisounds Audio

▼CONNECT with me / SUPPORT creativity and good content▼

Korg MS2000 Exploration

video upload by Bloom Music

"Donald Jordan's exploration of Korg's MS2000.

Intro: 0:08
Oscillators: 1:08
Filter: 9:11
Modulation: 12:46
Effects: 19:26
Patches: 20:50"

Korg MS2000 Exploration - Sounds Only

Novation Ultranova - "Analog Dreams" 52 presets

video upload by LFOstore

"Welcome to the long awaited analog-type & retro-type sounds for the blue Beauty - Novation Ultranova/Mininova!


'Analog Dreams' contains 52 organic presets in following categories:

Massive Basses
Edgy Leads
Space Plucks
Silk Pads
Big Strings
Organic Arp's
Experimental Sounds

By Nick Klimenko aka Chronos, a creator of 'Organica' for Waldorf Blofeld & 'WS Universe' for Korg Wavestation & Anton Sacral Reason author 'Stratosphere' for Wavestate.

Cinematic, Electronic, Ambient, Retrowave, create new music worlds with Ultranova and "Analog Dreams"

Every patch of our soundset is musical & can be immediately used in your tracks & production.

Enjoy and may the music come with you!"

Behringer 2600 - "Cinematica" 35 Patches

video upload by LFOstore

" presents 'Cinematica' patch bank for Behringer 2600.


By Nick Klimenko aka Chronos, a creator of 'Organica' for Waldorf Blofeld & 'WS Universe' for Korg Wavestation & Anton Sacral Reason author 'Stratosphere' for Wavestate.

It's time for patch cables & you will need not less than five!

We continue our journey through classical and modern sounds aswell as experimental & modular ones!

In the bank, you'll find: massive basses, deep plucks, leads and drones, ready to breathe new colors into your compositions and inspire creativity.

This soundset separated on categories:

Bass (10)
Leads (10)
Plucks (5)
Drones (5)
Motion (5)

Suited for all modern genres of electronic music: cinematic,retrowave, ambient, trance, house, classic electronica, downtempo.

We put all our effort & inspiration to make this patches suited for many genres & styles of electronic music.

Whats in the pack:

High quality pictures of every single patch ready for print with all the 35 patches.

Easy navigation, fast patching & great looking.

Single pages of each patch & hi quality demo (wet / dry version) for comparing & re-creation.


1978 Roland System 700 Lab

via this auction

Korg ARP 2600 M Limited Edition Semi-Modular Synthesizer

via this auction

Access Virus TI Mk2 w/ Custom Knobs

via this auction

"Access Virus TI Mk2 Desktop with Rackmount hardware. Upgraded knob kit (original knobs are included)"

Yamaha FS1R FM Tone Generator SN OX01665

via this auction

DISK SPACE Shigin Conductor Kinjo-ryu Shigin Trainer Synthesizer w/ Original Box

via this auction

“Kinjo-ryu, a conductor for poetry from Japan Disc Space. With a practice trainer that you can check while playing the scale of Shigin Equipped with 13 scale keys, pitch and volume. Power supply is dry cell (AA 2X6) and attached AC adapter It is a long-term storage product, but it is unused. Before listing, check that the batteries and AC adapter are energized, and there is no problem with the scale, pitch, and volume. The contents of the set are as follows Main unit, AC adapter, earphones, instruction manual, special case, original box”

Yamaha QX5-FD from 1988 | The last QX sequencer

video upload by Espen Kraft

"The Yamaha QX5-FD from 1988. The last sequencer in the QX lineup from Yamaha. Unlike the other models that came before it, this has a slightly different design. Made to compete with the Roland MC-500 first and foremost.
Yamaha would continue with the QY-line, as well as the RS7000 and RM1X that were more like groove boxes.
Now, with this quite odd late 80s release from Yamaha I can truly say my collection of QX sequencers are complete. :)
Many thanks to the donor!"

An intro to Stolperbeats by Making Sound Machines // Dilla style humanised beat sequencing (+ more!)

video upload by DivKidVideo

"Hello and welcome to this video on Stolperbeats from Making Sound Machines. This is a quick introductory overview to the module, some of the features and me making some beats and having fun with the module.

Stolper is German for ‘stumble’ with Stolperbeats meaning stumbling beats that cover the grooves and musical feels of drunk, wonky, lazy, off kilter hip hop rhythms with humanised timings, flams and custom shuffle and swing settings. With modes for DILLA, SHAKE, PUSH and CLAVE you can dial in the general musical feel and timings you’re going for then alter the amount of shuffle. At its core the module is a drum sequencer, offering both step sequencing and patterns for kick snare, 2 hi hats and 2 percussion lines as well as various sync and clock division outputs. So there’s plenty to go at for modular sequencing (and MIDI if that floats your boat).

A full demo video will come around the launch of the module, so ask questions in the comments and let chat about what you’d like to see from the module in the main demo video.

If you’d like to join my amazing community, gain access to exclusive videos, PDF booklets and more check out my Patreon at"

Noise Lab Clang and Wrinkler - first look and comparison

video upload by John Schussler

"'Clank & Wrinkler' sounds like a good name for a law firm. In this case, it's actually the two latest modules from Noise Lab in Sweden. Clank is a combination wave folder and ring modulator, Wrinkler is a wave folder.

Here I'm showing them next to a 'standard' ring modulator (from Random*Source/Serge) and wavefolder (Intelllijel Bifold). Both the Clank and Wrinkler have new features that make them unique, so I'm interested to hear them next to the 'traditional' sound.

As usual, envelope is Zadar, sequence is from Stochastic IG, and VCO is a Dixie II+ tri wave (until the latter part where I use the square).

00:00 Intro
00:20 Serge Ring
02:04 Clang - ringmod
07:08 Clang - folding
09:47 Clang - drone
11:31 Wrinkler - sequnce
14:30 Bifold
17:36 Wrinkler - drone
19:04 Wrinkler - square
20:59 Clang - square"

CLANG - Ring folder. A new eurorack module from Noise Lab Sweden.

video upload by Noise Lab Sweden

"Introducing CLANG! This new module from Noise Lab combines ring modulation and wavefolding in a pretty unique way. With just a sine or triangle wave you can create anything from bells and shrills to deep, brooding basses. Extremely versatile and plenty of sweet spots!"
Noise Lab Modules (DEMO)

video upload by Noise Lab Sweden

"Here's a demonstration of six new eurorack modules from Noise Lab (Sweden). All audio recorded directly into the camera, no processing or effects were added to convey a completely pure and unaltered sound. No talking. Find out more at:"

"CLANG Ring Folder

Clang is a unique combination of a four-quadrant multiplier (ring modulator) and wave folder that can generate a wide range of interesting sounds from just a sine or triangle waveform. From screeching drones and strange bell sounds to plucky tones or center aligned pwm waveforms. Three inputs which accept both audio and control voltages, and two outputs with slightly different functions: the left simply provides the processed sound, while the right routes the signal via a VCA, controlled by the Offset Mod input and its level knob. Clang also has an integrated triangle oscillator normalled to the Y input.

RM Mode switch (Ring Modes)
1: Four-quadrant multiplier. Modulation of the carrier signal with offset control. Ideal for producing typical bell-like tones.
2: A single stage, soft folding circuit that bends the waveform and adds extra harmonics to the carrier waveform.
Offset Mod input can be used to animate the folded signal.
3: A hard fold circuit that generates an unusual center aligned pwm-like waveform.

Width: 8HP
Depth: 26 mm
Power: 25 mA (+12 V) / 25 mA (-12 V)

175.00 €"

WRINKLER Wave Shaper

The Wrinkler consists of a primary wavefolder circuit and a secondary “creaser”, both controllable via knobs and CV. Generally wave folders only work with low harmonic content such as sine or triangle waveforms but this one comes with circuitry that can fold and wrinkle ANY waveform you feed into it, including square waves! An offset function adds some extra sonic abilities to the mix. The Wrinkler got two outputs; one with the folded signal and one with a “squarified” version of the folds. Perfect for creating harsh, metallic sounds.

When folding a waveform you add a lot of harmonic overtones to it. Unfortunately in the process, the fundamental gets weaker and you will lose some of its original low end content. With the DRY LEVEL knob you simply blend the original waveform with the folded.

Width: 12HP
Depth: 26 mm
Power: 46 mA (+12 V) / 46 mA (-12 V)

285.00 €

Rob Eris Opto


"Opto is a compact modular synthesiser system based on the west coast synthesis paradigm. The system is designed to give a huge amount or sonic possibilities in an extremely small and portable format. The user configurable touch controller can be used to interact with the system in a huge variety of ways depending on how the user patches it. Opto utilises the Eurorack standard allowing users to swap out the standard modules for thousands of available Eurorack modules from other manufacturers.

The Aesthetic design unashamedly takes influence from German minimalism and combines this with the flair of classic west coast synthesisers."

Morphor AP-1 - Analogue String Synthesis Eurorack Module

video uploads by Morphor

via the Morphor AP-1 Kickstarter

The Morphor AP-1 module is a fully analogue Eurorack module that can produce plucked string sounds. Based on the Karplus-Strong principle, this module is a compact all-in-one solution for generating amazing bass, acoustic guitar and percussion sounds. By using high quality analogue components we made a module with a rich sound. Being only 10HP in width, you won't need a lot of space to get going and start creating some incredible music. Background

I am Thijs, based in Belgium, dipping my toes into developing modules for the first time. After recently graduating as an electronics engineer, I'm currently looking for ways to use my skills and passions to create new things that people love. Thanks to Eli and Matthew from ENT Studios, music lovers who have been just as passionate about this project, this dream is coming to reality. They have over 15 years of experience as electronics engineers and have been supporting me with technical advice, frontplate design and more.

The idea for the Morphor AP-1 module came from personal experience and interests. Being extremely passionate about music, playing bass myself and having some experience with string synthesis in software, the idea to bring this concept to Eurorack in a completely analogue way was obvious from the start. After months of tinkering away I am confident enough in my working prototype to share this exciting project with the world.

The Morphor AP-1 module can produce plucked string sounds with a wide variety of sounds. The module has the following controls:

GATE: to pluck the string, simply insert a 5V pulse into the input. Short triggers work great but you can play around with longer pulses to get rougher sounds.
TUNE: change the frequency of the string with a 1V/oct input. Afterwards you can generate vibrato and other effects with a separate CV pitch input.
COLOUR: you can alter the timbre of the string with this control, including a CV input. This way you can get very noisy or dampened sounds.
FILTER BYPASS: the colour parameter is shaped by an internal filter but can be bypassed if you like. Use your own external filter to generate unique sounds. A one pole low pass filter will give the best results but feel free to get creative with this feature. You can insert anything you like into the loop.
FEEDBACK: by adjusting the feedback amount it's possible to change the decay of the sound. Create short plucked sounds or long ringing strings. In some configurations, you might even get some nice oscillations.
OUTPUT: take the output to the rest of your modular system and start experimenting!
Other information:

Frequency range: sub audio range to roughly 400 Hz
Dimensions: 10HP width, 3U Eurorack standard
3.5mm patch cables for all jacks
16-pin power socket

Demo - Strength KITARO COVER

video upload by ltpstan

"'Strength' is something I have been listening for quite some time. The more I listen, the more I feel the melody and the energy of the piece. It is a very unique piece with very interesting chord progression. My favourite rendition is the Live version from Chicago 1999. The drums beats and the whole piece somehow worked well for my liking.

This is something I have been working on the past few days.

The layout of the track has been completed only. Sounds and editing has a long way to go."

The Making of the DISORDER effect pedal by #Dreadbox #fuzz #disorder

video upload by Dreadbox

"Take a sneak peek of how Dreadbox developed the DISORDER Fuzz pedal.

DISORDER is a very aggressive fuzz pedal with a twist. It is equipped with a self-oscillating filter, that allows you to produce oscillating fuzz sounds.

Additionally it has a low pass and high pass filter, that makes it suitable for guitar and bass as well. Finally an envelope follower is also present, allowing you to create wah-wah sounds."

Disordered Spice, With the New Dreadbox Disorder Fuzz Filter | Sound Recipes #29

video upload by Reverb

"For spicy audio chaos, we're blasting through the rapid openings and closings of the new Dreadbox Disorder fuzz filter by using an EBow and guitar slide.

We're also using #KOUNTCHALLENGE drums, a Reverb-exclusive sample pack and stems by The Kount.

Find details on all the gear used and even more Sound Recipes here."

The disturbance in physical or mental health or functions. It could be defined as a set of problems, which result in causing significant difficulty, distress, impairment and/or suffering in a person’s daily life.

Dreadbox DISORDER is a very aggressive fuzz pedal with a twist. It is equipped with a self-oscillating filter, that allows you to produce oscillating fuzz sounds.

Additionally it has a low pass and high pass filter, that makes it suitable for guitar and bass as well. Finally an envelope follower is also present, allowing you to create wah wah sounds.

Advanced Oscillating Low Pass or High Pass Filter

Vintage Transistor based Aggressive Gated Fuzz

Excellent Low End response for Bass Guitars
Screaming High Pass Filter for Guitars



to interact with CV

AVAILABLE for 115 € (excluding VAT)

Roland TR-606 Rhythms From Scratch (4K)

video upload by Catalogue

"Some rhythmic pattern created from scratch, using the 606 sequencer.
Everything is recorded from the main mono out, without any effects.
The 4 beats are programmed step by step using the internal clock.
Enjoy ;)"

Secrets Vol 2 - Patches 25 to 48 - Arturia Polybrute

video upload by GEOSynths

"Out Soon...GEOSynths is back with another Soundset for the fantastic Arturia Polybrute. Vol 2 explores Tone and Texture in more detail with Emotive Pads, Textured Strings, Cutting Bass & Leads, Arp's, Poly's and so much more.

There are 96 Patches in the Bank with 25 to 48 being demonstrated in this Video (2 of 4) All Patches have an A+B State, some of which are slight variations, while others are very different, including Splits. Controllers are assigned where appropriate.

Make Noise Strega Sound Demo (no talking) with 0 Ctrl

video upload by Bonedo Synthesizers

Pittsburgh Modular A Filter of Crows, Dynamics Controller Bat, & The Wolf Eurorack Modules

Pittsburgh Modular A Filter of Crows Eurorack Module Lab

Pittsburgh Modular Dynamics Controller Bat Eurorack Module Lab

Pittsburgh Modular The Wolf Eurorack Module Lab

video upload by Pittsburgh Modular Synthesizers

A Filter of Crows
Our classic Pittsburgh Filter pushed to the limits. The overdrive preamp from original Crow module paired with switchable filter response, resonance instability mode, and voltage control over both frequency and resonance. A Filter of Crows can be both menacing and subtle with a massive sonic palette. Shifting from buttery smooth sweeps to punishing, overdriven noise without ever sounding harsh or uncomfortable. This is the most interesting variant of the Pittsburgh Filter we have created.

A Filter of Crows is a unique filter module that builds on the concept of the highly sought-after Safari Series #1 module, 'Crow'. It combines three Pittsburgh-designed 100% analog technologies.

Ultra-high-gain preamp:
The first is an ultra-high-gain preamp circuit. The preamp, taken directly from the original Crow offers a unique up to 75x of variable gain overdrive. This circuit provides unmatched dimensions of overdrive without sounding harsh. Additionally, the circuit can be completely bypassed to allow for a completely clean exploration of the other aspects of the module.

PGH Filter:
Next is a 12db State Variable 'no-dead-spot' Filter, The classic PGH Filter with manually selectable and stackable filter responses. Lowpass, bandpass, and highpass filter responses can be enabled or disabled individually for instant parallel processing.

The PGH filter has been continually refined over the last 12 years of research and altered to fit the demands of each system that it has been a part of. One of its unique defining characteristics is its ability to offer a complete sweepable range without any noticeable dead spots. Dead spots are uneven / muted portions of the swept range due to non-linearities in the circuitry. The PGH filter has no noticeable dead spots and is voiced to interact well with the high-gain preamp circuit. The result is a rich, even, fully sweepable range.

Resonant Stability Circuit:
Lastly is Pittsburgh’s Resonant Stability Circuit. This circuit enables the PGH filter to provide near-infinite resonance without slipping into self-oscillation, unless the user wants it to. Set to stable, Crows will not self-oscillate. It operates as a clean, organic filter. Set to unstable mode, the character of Crows changes dramatically. At normal settings, the incoming signal modulates the self-oscillating filter to produce harmonically complex sounds. In more extreme settings, Crows will start to struggle with controlling the oscillating resonance, adjusting the resonance shifts from ringing fuzz to heavy distortion to an extremely musical total failure."

Dynamics Controller Bat
Both a resonant filter and a VCA, the Pittsburgh Modular Dynamics Controller Bat is a modern re-interpretation of Don Buchla’s famous 'lopass' gate. The original lowpass gate was limited to a static response time that varied from unit to unit. For better or worse, this made each lowpass gate a little different. The Dynamics Controller Bat solves this issue and expands on the original concept by adding a unique voltage controllable response curve and variable resonance to the lowpass gate. Nothing has more depth, sounds more natural, or feels more alive than the our Dynamics Controller. Not only is this module unique in the world of modular synthesis, it sounds amazing.

Both a resonant filter and a VCA, the Pittsburgh Modular Dynamics Controller Bat is a modern reinterpretation of Don Buchla’s famous 'lowpass' gate.

Unlike a VCA, which simply changes the loudness of the sound without modifying the harmonic content, the lowpass gate circuit uniquely simulates the characteristics of how sounds interact in natural environments.

When used in lowpass gate mode, louder sounds contain more harmonic content and quieter sounds contain less harmonic content. The result is a more organic, complex, and rounded sound.

Don Buchla’s original lowpass gate (LPG) was limited to a static response time that varied from unit to unit. For better or worse, this made each lowpass gate a little different. Pittsburgh’s research that has made its way into the Dynamics Controller Bat solves this issue. It modernizes Don Buchla's concept by adding a unique voltage controllable response curve and variable resonance to the lowpass gate. This allows for all the sonic depth of the LPG while providing the same kind of sustain control offered by a more traditional VCA. The resulting Pittsburgh innovation is the best of both worlds, natural and alive sound, that's completely controllable."

The Wolf Channel Strip VCA
The idea was to design a VCA that makes everything sound better. Through the use of a custom Wolf preamp circuit, parametric EQ, and a high quality, linear VCA, The Wolf adds depth and presence to any patch. A custom preamplifier with variable gain control shifts between .5x and 7x gain followed by a soft clipping limiter. Results range from fully transparent to warm saturation to overdrive depending on how hard it is pushed. A three stage, 15db EQ pairs sweeping low and mid range channels with a fixed frequency high shelf followed by a second soft clipping limiter identical to the one in the preamp to keep it smooth. Green, Yellow, and Red LEDs are both fun and informative! Located after the EQ and before the VCA in the signal path, the LEDs offer insight into the audio signal.

The Wolf is a Channel Strip VCA designed to improve and provide more control over any input source. It does this through another three unique circuits.

Wolf Preamp
The Wolf’s Preamp is a custom preamplifier with variable gain control shifts between .5x and 7x gain followed by a soft-clipping limiter. The soft-clipping limiter is a way to control the amplitude of the signal while avoiding harsh distortion. Depending on how hard it is pushed, the results of running a signal through this circuit range from fully transparent to warm saturation to overdrive.

Wolf three-stage Semi-Parametric 15db EQ
The Wolf also has a three-stage Semi-Parametric 15db EQ featuring sweeping low and mid-range channels, as well as a fixed frequency high shelf. The EQ section is followed by an additional soft-clipping limiter identical to the one in the preamp. This evens out the signal keeping the audio sounding smooth.

Wolf VCA
The Wolf’s VCA is a low noise, high quality, linear voltage controlled amplifier with both manual level and CV attenuator controls.

No channel Strip would be complete without metering. Wolf’s LED Meter provides Green, Yellow, and Red LEDs for fun and informative listening. Located after the EQ and before the VCA in the signal path, the LEDs offer useful insight into the audio signal."

Price, Availability, and More Information The retail price for the A Filter of Crows, Dynamics Controller Bat, and The Wolf Channel Strip VCA is $249 USD each. Because these modules are considered experiments, production has been limited to 200 A Filter of Crows, 250 Dynamics Controller Bat, and 200 The Wolf Channel Strip VCA modules. The modules are available now through the Pittsburgh Modular web shop. More information regarding the A Filter of Crows, Dynamics Controller Bat, and The Wolf Channel Strip VCA Eurorack Modules is available at


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