PATCH / STEREO 4 VOICE GENERATIVE CHORDS / Joranalogue Audio Design system

video upload by Joranalogue Audio Design

"'I had a blast creating this patch on a giant Joranalogue eurorack system. I implemented a lot of small tricks, let me write out the main ones down here...'—Simon


Kickdrum
---------------
Filter 8 is getting pinged by a clock pulse (generated with a looping Contour 1), routed through Warp 1. A second Contour 1 is used to modulate the frequency of Filter 8. A Step 8 being clocked with the same pulse from Contour 1 is modulating the exponent parameter on Warp 1 (controlling the amount of distortion/waveshaping). The pattern is 7 steps long. By adjusting the exp knob manually I have additional control over the distortion.

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Introducing Granulita Versio: Granular chord resynthesizer and shimmer reverb

video upload by Noise Engineering

"Meet Noise Engineering’s chord machine, Granulita Versio.

LIMITED QUANTITIES AVAILABLE: Get your Granulita here: https://noiseengineering.us/products/...

This granular chord resynthesizer takes your audio, slices it into grains, and reconstructs it into chords, clusters, and shifting harmonies. Paired with a shimmering reverb that adds glowing tails and angelic overtones, Granulita can turn even a single oscillator into something lush, cinematic, or beautifully haunted.

Granulita is part of the Versio platform, so once you’ve got your hands on this module, you can swap the firmware with any other Versio effect for free. Unpower the module, plug in the USB, and visit noiseengineering.us to make the swap.

Join us on Discord! Invite link: / discord"

Press release follows:

Noise Engineering announces Granulita Versio, a granular chord resynthesizer and shimmering reverb.

Contact: kris@noiseengineering.us

Los Angeles, CA — Noise Engineering, known for their innovative platform modules, has released Granulita Versio, a granular chord resynthesizer and shimmering reverb.

Granulita Versio offers a simple solution to a complex modular problem. Chords, while beautiful, are difficult and resource-heavy to patch in a Eurorack system. Granulita solves this by generating harmonies for any input signal using a unique granular process. The Chord and Voice parameters allow the user to choose a chord and the note that follows the input signal.

The unquantized Pitch parameter adds an extra layer of harmonic options via transposition, detuning or vibrato.

For fans of granular processing, the Count and Length parameters will be familiar, Granulita can generate any number of grains from zero to 32, and grains can be 16 milliseconds to four seconds long. A modal trigger input and manual button add to the granular fun: freeze grains, sync their playback to an external clock or tap tempo, or use a trigger sequence to manually fire off grain playback.

No granular module would be complete without some atmospheric effects, so Granulita also adds the simple Verb parameter to add in some space. Below noon, small echoes put a patch in a realistic space – but turn up the parameter to add in shimmering octave overtones and feedback into infinity.

Part of the flexible Versio platform, Granulita will be available as an alternate firmware for all Versio owners, completely free, at the Noise Engineering firmware app. However, Granulita breaks the mold with a limited-edition hardware release: only 100 Granulita Versios with exclusive art will be produced, the perfect purchase for collectors or, perhaps, as a holiday gift for the granular enthusiast in your life.

Granulita Versio’s limited run starts December 11th at https://noiseengineering.us and at retailers globally.

Features
● Turn a monophonic signal into a full chord with ease
● Easily create gentle or ominous timbres from any input
● Modulate between 16 resynthesized chord shapes using the CV-controllable Chord and Voice parameters
● Use Count and Length to change the number and size of grains
● Add subtle atmosphere or shimmering, infinite reverb with the Verb parameter
● Create massive soundscapes or use external triggers to fire or freeze grains
● Play grains forwards, backwards, or in random directions

Availability and pricing:
Granulita Versio: Limited run in stock. Shipping from Noise Engineering and retailers starting December 11th, 2025; MSRP US$393

https://noiseengineering.us/products/granulita-versio/

Also check with dealers on the right.

Update: and a user video by Metamyther:

The Glorious Granulita Versio

video upload by Metamyther

Chapters:
00:00 - Jam 1
02:33 - Jam 2
05:54 - Jam 3

Café Quantum

video upload by Patch Point

"By Ciat-Lonbarde"



"When the Cocoquantus2 first appeared, it didn’t just find an audience—it created one. Musicians, experimentalists, producers, and curious tinkerers fell in love with its organic chaos, character, and uncanny ability to turn accidents into art. It became a modern cult instrument because you couldn’t play it without forming a relationship with it.

Café Quantum continues that lineage with reverence—then boldly invents a new chapter.

At its core, Café Quantum preserves the tactile immediacy and playful unpredictability of the Coco ecosystem. But surrounding that familiar heart are entirely new tools designed to make the instrument feel more alive, more intelligent, and more expressive.

One of the biggest leaps is the open-source programmable engine. For the first time, players can write their own behaviors—little sonic personalities— at the Cafe modules, one for each side, and the Quantum module can carry them out by patching points. Whether it’s generative patches, evolving modulation, rhythmic structures, or strange autonomous rituals, the instrument becomes a creative partner. And thanks to the dedicated banana sockets, these behaviors integrate directly into the patch ecosystem. The Cafe module becomes a blank page for your imagination, shaped as far as your coding skills can carry you

The preamp has grown up too. Now it features a Norton gain character and adds a VCA input, making external dynamics, sidechaining, and voltage-controlled level manipulation feel effortless. On top of the newly redesigned preamp features you still have the envelope follower that opens the door to all sorts of expressive interactions between incoming audio and internal modulation.

Then comes the new magic trick:
A radio-based gestural controller sits atop the entire system, allowing 4 hands-free modulation reminiscent of a theremin. Move in space, and the instrument responds—pitch, delay time, grain density, feedback paths, whatever you choose. It transforms performance from knob-twisting to full-body expression."

Doepfer A-188-9 High Speed VCO - Audio Demo

video upload by Doepfer Musikelektronik GmbH

"Over the last month, we have been recording videos for our Instagram channel. Here is a compilation of some of the clips!

In the video, the A-121-S stereo filter is mainly used as an end-of-chain filter. In combination with the A-149-4 quad random voltage source, it is possible to add modulation to the stereo field.

The feedback path was often patched in the clips, for example with a bandpass filter that had high resonance. This can lead to some pretty crazy sounds, as you can hear!

Another interesting thing to try is playing really high or low notes. Some of these the BBD is unable to track, which results in some quite nice glitches.

The A-188-9 and A-188-1 BBD combo offers a wide range of sound possibilities and often produces happy accidents. It's totally worth trying!

Questions? Let us know!

Module A-188-9 is a so-called high speed VCO that tracks prefectly to the 1V/oct scale in the frequency range of about 15kHz ... 500 kHz. The main application is the exact drive of BBD modules (A-188-1/2) to generate sounds realized by means of the so-called Karplus-Strong synthesis. But even in cooperation with other modules featuring high speed inputs (e.g. digital noise, delay, frequency divider) the A-188-9 makes sense. In principle, the module is made of a precision audio VCO followed by a PLL (phase locked loop) unit that multiplies the frequency of the audio VCO by 32. Thus the module can be used also as an audio VCO as it features the standard waveforms sawtooth, triangle and rectangle with adjustable pulse width."

See the announcement post here.

Oddment ODD-1 Build Update & Demos

video upload by oddment

Demos

video uploads by oddment

Playlist:
1. ODD-1 Overview: Playheads

For a long time now we have tried to live by the words of the great Michael Bolton from the movie Office Space, "why should I change when he's the one who sucks?" But language evolves, and unfortunately, the word “grok” has taken on associations that are problematic. Oddment has evolved too. Starting from one quirky product idea, in 3 years we have grown and are now ready for manufacturing and fulfillment of this product, with ambition to make it the first among many. So with much consternation, we have decided to drop the name groc. When we thought about a new name, we thought that what we have is a little unusual, perhaps a little outside the norm...you might even call it, the ODD-1. This is the first in a series of videos to show all of the ODD-1's functions in more detail. In this one we show off half of the encoders that control the granular synthesis engine - the PLAYHEADS function. Here you can control the level, starting point, tuning (aka pitch adjustment) and playback speed for up to 4 different granular playheads. The auxiliary functions available on the touch screen introduce random variability in different ways.

2. ODD-1 Overview: Grains

This is the second in a series of videos to show all of the ODD-1's functions in more detail. In this one we show off the second half of encoders that control the granular synthesis engine - the GRAINS function. Here you can control the size, spacing, left-right placement, and grain window shape. Each control also has a related function, introducing grain size variability, spacing jitter, binaural scatter, and a front-back bias for the window shape. The auxiliary functions available on the touch screen control a bandpass filter that can be randomized per grain and adjust whether grain size is regulated in the source sample or in the output signal, which can have a big impact on sound characteristics.

3. ODD-1 Overview: 03 Envelopes & Time Path

This is the third in a series of videos to show all of the ODD-1's functions in more detail. In this one we show off the ENVELOPES function. Here you can control the note amplitude envelope and timing, access 3 envelopes that can be used as modulation sources, and use our unique TIME PATH feature to dynamically adapt the playback speed.

4. ODD-1 Overview 04: Sample

This is the fourth in a series of videos to show all of the ODD-1's functions in more detail. In this one we show off the SAMPLE function. Here you can choose a sample from the factory library or user-uploaded samples, control the playback mode and the section available for granulation, play and hold notes, set loop points and interact with pitch, tempo and channel information of the sample. We also show the auto pitch and tempo alignment features.

5. ODD-1 Overview 05: LFOs, Macros, Patching

This is the fifth in a series of videos to show all of the ODD-1's functions in more detail. In this one we show off the LFOs, Macros and how to create modulation connections. There are 4 LFOs, 3 Envelopes, 4 Macros (assignable knobs), 4 Control inputs and MIDI information that can all act as modulation sources. Any parameter on the device is a parameter destination. Unlimited connections are made by holding down a destination parameter and then pressing or twisting a modulation source.

6. ODD-1 Overview 06: Filters, Saturation, Echoes

This is the sixth in a series of videos to show all of the ODD-1's functions in more detail. In this one we show off the Filters, Saturation and Echoes modules. Two filters and two saturation modules per voice, both with multiple types of processing and modulatable parameters, allow for transformation beyond the granular engine. Two echoes sections with filtering and distortion in the feedback loop and fully modulatable parameters make ODD1 worthwhile just as a modular effects rack!

7. ODD-1 Overview: 07 Layers

This is the seventh in a series of videos to show all of the ODD-1's functions in more detail. In this one we show the dual Layer functionality. Essentially the entire system is duplicated so the ODD-1 is like having a dual modular systems, each with a polyphonic granular engine feeding two filters and two non-linear processors per voice, with 3 envelopes, 1 time path, 4 LFOs, 4 Macros and a independent modulation matrix per layer. In these examples we also remind that granular can easily do subtractive-style synthesis when using a basic waveform as the source sample.

8. ODD-1 Overview 08: Reverb & System

The final video in our eight-part series on the ODD-1's functions focuses on the upper-left row where we have global volume, system-level reverb and can work with banks of patches.

The reverb is a classic matrix-style parametric reverb. Think of it like a whole set of interacting delay units with slowly modulating delay times. Ok now that you have that in mind, that's it, that's what it is. It sounds sweet.

If two layers of modulating, granular goodness with a fantastic reverb on top wasn't enough, how do banks of patches to store every twist and connection sound?

And from their newsletter:

What’s in a name?

For a while now we have tried to live by the words of the great Michael Bolton from the movie Office Space, "why should I change when he's the one who sucks?"

But language evolves, and unfortunately, the word “grok” has taken on associations that are problematic.

Oddment has evolved too. Starting from one quirky product idea, we have grown in three years and are now ready for manufacturing and fulfillment of this product, with ambition to make it the first among many. And with much consternation, we have decided to drop the name groc.

When we thought about a new name, we thought that what we have is a little unusual, perhaps a little outside the norm...you might even call it, the ODD-1.

And we plan to keep that off-beat attitude. We hope that brightly-colored friends, ODD-2 and ODD-3, will be along to join ODD-1 after not too long.

Build Updates

We have a lot of exciting progress to report since the last time I wrote. Hop over to our YouTube channel to check out a build update video and some in-depth functionality demos.

We debugged and fixed several problems with the circuit board including the power-up, line input and output, and noise on the control signal inputs.

We got several bids from contract manufacturers in the U.S. and around the world and selected Soldered, based in the E.U. They came highly recommended, and we think their experience will be a huge asset as we go into production.

We worked with Martyna Alexander to tweak the graphic design of the front and back panel. We are thrilled with the updates, including our new company and product logos.

We have first iterations of our custom firmware, enabling full functionality of the device and full USB connectivity to a host computer.

We have completed first versions of the software that include all audio, MIDI and system functionality we intend to support for the release. After many months of playing and testing we re-organized a few functions to expand both the number of concurrent grain “playheads”, and to support banks of patches intended for convenient switching and management in live performance.

What’s Next?

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Fraught - Ableton Move & 62hp Eurorack Palette - ritual psy-doom techno

video upload by Abre Ojos

"53bpm - Stories from the deep

‪@Ableton‬ Move
Eurorack Modular:
Dust of Time
DNIPRO Krait
‪@NoiseEngineering‬ Manis Iteritas
‪@Befacosynth‬ Oneiroi
‪@intellijel‬ 62hp Palette case + 1u modules

Live visuals using Just the Two of Us from Archive.org under a video microscope with live video feedback & ‪@entropyandsons‬ Recursion Studio
Video processed live through Resolume Avenue
Recorded with Rodecaster Video

Dark ambient audiovisual stuff: https://abreojos.net"

SOMA WARP - Part 1. Master effects (SOMA labs demo, no talk)

video upload by SOMA Laboratory

00:00 PUMP loops
02:15 PUMP Pulsar-23
03:16 MULTIBAND DISTORTION loops
04:30 Pulsar-23
05:42 HPF LPF
07:47 WAVEFOLDER Pulsar-23
09:42 WAVEFOLDER Terra



WARP is a high-quality multi-purpose audio processing unit, able to add might and magic to almost any instrument. It contains 15 different effects that can be divided into three types:

Spatial effects — ranging from traditional reverbs to granular, experimental algorithms, with pitch-shifting, reverse and micro-loops. Most of the spatial effects feature extremely long decay times, all the way to infinity. With feedback ratios above 1 you can drive the algorithm into self-oscillation for creating endless, rich, lively soundscapes out of almost any sound. To keep the sound under control with reasonable headroom and tonal aesthetic, all the generative algorithms include dedicated modules to automatically control sound levels.
Special effects — such as flanger, sample rate/bit reduction, vintage tape simulation. All special effects include unusual functions giving them a unique SOMA flavor.
Dynamic effects and filters — compressors, distortions, filters. All the effects in this category can be applied to submixes, e.g. a rhythm section group, or even to the whole mix – so one can conventionally call them master effects. All the effects in this category also have their unique extended features, SOMA-style.
All of that makes WARP a great unit for spatial processing of any acoustic or electronic instruments — guitar, vocals, strings, synthesizers etc., — as well as processing drums or complete mixes. WARP uses top-class audio chains and AD/DA-converters, same as those found in the best professional audio-interfaces made by APOGEE, FOCUSRITE, LEXICON, ECHOAUDIO, LINE 6, NOVATION. This prevents sound deterioration, even in such demanding situations as processing a complete mix. WARP has stereo inputs and outputs, compatible with both balanced and non-balanced connections. All of the sound processing is digital, including the MIX control. The AD/DA resolution is 24bit/48KHz. The internal digital processing resolution is 32bit IEEE.

WARP has a simple, intuitive interface, with instant direct access to all functions — perfect for playing live. Every processing parameter has a dedicated CV input, controllable via Eurorack systems and any CV source.

Erica Synths - Fusion System 1

Note: links to listings are affiliate links for which the site may be compensated.
video upload by NOISEBUG

https://www.noisebug.net/

Update: moved this one up for the added video.

"Erica Synths - Fusion System in excellent condition

She’s a real screamer! Available for purchase on our used reverb page. Interested in trading in your gear for store credit? Shoot us an email! #synth #eurorack #modularsynth"




via this Reverb listing

Additional NOISEBUG Listings

"Fusion System MK1 in excellent condition. This system has been fully tested. all modules function as expected and the modules all sound incredible!

Comes in an Erica Synths powered skiff with original PSU.

Erica Synths Fusion Drone System is here for those, who want to explore the dark territories of the sound, where only few have stepped in.

Vacuum tube based Erica Synths Fusion Series modules are the basis for this system, while Black Modulator and Black Envelope Generator add plenty of modulation and noise generation possibilities. It has 43 patchpoints for extensive experiments in sound design, all analogue signal and CV path to create the drones of massive power. Want a solid bassline with great 1V/oct tracking? Use CV/Gate sequencer or keyboard and you have it! Erica Synths Fusion Drone System brings distinct and powerful sound into eurorack.

Fusion Drone System includes:

Fusion VCO – Two double triodes in bistable latch connection act as suboscillators: -1 and -2 octaves with plenty of mixing opportunities for amazing sonic results. External audio signal can replace internal VCO.

Fusion Ringmodulator V2 – Germanium diodes enrich the sound by adding extra harmonic content meanwhile vacuum tube adds evilish overdrive to audio and carrier signals.

Fusion VCF V2 – Each side of the double triode drives signal between 2nd and 3rd stage of the filter, while germanium diodes are used to limit the output signal.

Black Modulator – a fully analogue modulation and noise source.
Black 8-Multi – an advanced replacement for stackable patch-cables – it is active buffered multiple with signal status LEDs.

Fusion VCA V2 – a Russian miniature pentode 1Ж24B with power consumption comparable to an LED.
Black EG – the ultimate control over envelopes in your modular system.

Fusion Delay/Flanger/Vintage Ensemble – a distinct multifunctional analogue effects module that combines BBD chip based effects with an adjustable tube overdrive in the delay output and a feedback path for extra thickness of the sound.

104HP One Row Skiff case"

CLICK FOR MORE »

Xaoc Devices Introduces Zlin 1982 Crossfader

video upload by Xaoc Devices

"Please welcome a new member of the Xaoc Devices Eurorack modules family. Zlin [zlin] is a small utility module (only 3HP!) that can act as an audio signal and CV cross-fader, a linear VCA with drone control, a ducking VCA, or a feedback controller. It is a tool perfect for any modular environment - a missing piece of the puzzle greatly enhancing the creative potential of any system. Use it to construct unusual waveforms, simulate classic subtractive-style dynamic timbre shaping without the need for any filters, or simply morph between rich signals.

As Zlin is DC-coupled and built around a modern high-quality dual VCA chip, it delivers a wide dynamic range with low noise and distortion. A slider potentiometer with an illuminated LED provides visual feedback of the module’s state. An auxiliary jack with three selectable functions adds further flexibility for creative patching.

Main features:
width 3HP
depth 32mm (including cable bracket)
+25mA/-15mA
voltage and manually controlled cross-fader
linear, DC-coupled VCA with drone and duck functions
feedback controller
visual indication of mix ratio
AUX jack for patching tricks

PRICE: 100 EUR MSRP, available now!"

Check with dealers on the right for availability.

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Impiety - Ableton Move & 62hp Eurorack Palette - dark ambient ritual psychedelic doom

video upload by Abre Ojos

"53bpm - Still wondering how we got here

‪@Ableton‬ Move
Eurorack Modular:
Dust of Time
DNIPRO Krait
‪@NoiseEngineering‬ Manis Iteritas
‪@Befacosynth‬ Oneiroi
‪@intellijel‬ 62hp Palette case + 1u modules

Live visuals using Just the Two of Us from Archive.org under a video microscope with live video feedback.
Video processed live through Resolume Avenue
Recorded with Rodecaster Video


Dark ambient audiovisual stuff: https://abreojos.net"

Joranalogue Audio Design Introduces WALK 4 & WARP 1 Eurorack Modules

Press release follows:

"Emerging from the Joranalogue labs are two exciting new additions to our ever-growing series of fully analogue Eurorack modules. Let's dig into this dynamic duo.

First up: like a sample and hold with a master's degree, Walk 4 combines four analogue accumulators with a clock generator, four white noise sources and an auto reset to create a 10 HP voltage stepping, arpeggiating and random walking juggernaut.

With full voltage control and independent value and trigger inputs for each accumulator, there’s always more stochastic patching to explore ahead. And if you need a reliable master clock source with a huge range, 1 volt per octave tracking and external reset—that’s covered, too.

Meanwhile, its partner Warp 1 is a new breed of analogue waveshaper, based on a precise mathematical relationship between input and output, governed by a variable power function.

From subtle timbral colouring to wild hyperbolic distortion, it provides a level of control that’s unprecedented in waveshapers, combining meaningful parameters, clear LED indication, complete voltage control and DC to supersonic operation.

Friend of the brand BRiES already went and made a couple of excellent overview videos—be sure to check them out below. And, if you want to be among the very first people to patch these modules up, drop by our booth at Machina Bristronica in Bristol (UK), on Saturday the 27th or Sunday the 28th of September!"

Joranalogue Audio Design Introduces WALK 4 | Quad Brownian Accumulator | Quick Overview

video upload by Joranalogue Audio Design

WALK 4

QUAD BROWNIAN ACCUMULATOR

4 high-precision analogue voltage accumulators.

Integrated wide-range clock trigger generator with 1 volt per octave tracking.

Trend parameter for simultaneous modulation of all accumulator values.

4 white noise generators add adjustable volatility.

Constrain provides counteracting force, preventing voltages from accumulating too quickly.

Automatic and trigger-driven reset functions.

Add input adds a continuous external signal to all accumulator outputs.


Joranalogue Audio Design Introduces WARP 1 | Power Curve Waveshaper | Quick Overview

video upload by Joranalogue Audio Design

WARP 1

POWER CURVE WAVESHAPER

Analogue waveshaper based on power functions.

Adjustable exponent shapes waveforms from concave, to straight, to convex.

Hyper mode shapes incoming signals into hyperbolic-like waveforms.

Absolute value function for full wave rectifier use.

Symmetry control for asymmetric waveshaping.

Precision output clipper with independent negative and positive clipping levels.

Regular, inverted and polarity comparator outputs.

Excellent visual feedback: input voltage, output voltage and clipper status indicator LEDs.

BE A BETTER MODULATOR // Understanding Eurorack Modulation with the Thonk TRIPLE MOD

video upload by DivKid

"In this video we’ll break down how common types of modulation for sound synthesis work, how to make the most of them creatively and musically. We’ll do so while demoing the new Triple Mod DIY module from Thonk. Whether it’s creating multi-phonic layered patches needed multiple envelopes, understanding how a Turing Machine works and performing with it, understanding and making Sample & Hold melodic, creating chain reactions with EOC ‘end of cycle’ triggers … there’s lots in this video applicable to LOTS of other modules."

CLICK FOR MORE »

Radio Row: John Cage x IDM

video upload by Electrum Modular

"Channeling the spirit of John Cage, with the aid of ADDAC’s Servo module, a cheap radio, and a looper.

FURTHER NOTES:
• feedback on the Disting stereo delay is set to 28, just below the 100% level (32), so that sounds eventually fade out. The transience of sound - and the futility of trying to capture it through recording - was a theme in Cage’s writing.
• analog radio itself now seems to be fading away; several countries have already dropped FM. This kind of piece may not be possible soon.
• to ensure intervals of silence (rests), Cage specified AM band, which had fewer stations. I opted here for FM, for the warmer sound, reduced static, and closer spacing of stations.
• finding a radio that would work was a challenge. It had to be analog, with a headphone jack, and a simple frequency dial (1:1 ratio as Servo cannot go beyond 270 degrees). And the dial cap had to be removable. The only one I could find with all this was Studebaker Portable AM/FM Radio SB2002: https://studebakerhifi.com/collection...
• To fit the Servo’s arm to the tuner dial, I needed an adapter (a coupler from my son’s old Meccano set fit perfectly!)
My earlier video about ADDAC’s Servo: • When modules grow limbs: ADDAC's Servo [posted here]

SOURCES
John Cage, Silence (1961)
Andrea Valle and Amedeo Casella, 'Imaginary Landscape No. 4: study and annotation of the score,' Proceedings of the XXI CIM-Colloquio di Informatica Musicale (2016)
Alana Pagnutti, Reception: The Radio-works of Robert Rauschenberg and John Cage (Smith+Brown, 2016)
'Bedlam on Radio Row,' New York Times, May 25, 1930, 144"

Otterly original modules from Otter Mods 🦦🎛️ #Knobcon

video upload by CatSynth TV

"Elton Glover of Otter Mods gives us a tour of their offerings, including the O.T.T.e.R pattern generator, Itero step sequencer, and Triquetra triple shift register module.

For more information, please visit https://ottermods.com
For more on Knobcon, please visit https://knobcon.com

0:00 Introduction
0:37 O.T.T.e.R pattern generator
1:56 Itero step sequencer
2:36 Triquetra triple shift register module
5:36 Conclusion

Please consider supporting this channel to help us bring you more synthesizer tutorials and other content.

Merch: https://shop.catsynth.com
Patreon: / catsynth
Ko-Fi: https://ko-fi.com/catsynth

"Triquetra is a linear feedback shift register module, with three independent registers that have their own Gate and CV output. The clock for the second and third register are normalled to the first, but can be supplied with their own clocks to get a wide range of versatility from the module. A clock source is required to generate bits. The toggle switch will change between Looped and Free Run mode.

Each register has an attenuator for the CV output.

The Gate mode can be switched from a 50% clock cycle when the last bit is high, to a high output as long as the last bit is high. This gives the result of switching between either a “Trigger” style or “Leggato” style Gate. The Gate mode can be switched at any time by pressing all three buttons at the same time.

Each button corresponds to the three registers, and will cycle through the bit generating algorithms (seven in total). The LED will cycle through different colors corresponding to the following:

RED = LFSR1

GREEN= LFSR2

RED/GREEN= Small Number Modulus

BLUE= Fibonacci Sequence

RED/BLUE= Prime Number Sequence

GREEN/BLUE= Large Number Modulus

RED/GREEN/BLUE= Otter Mods Cryptograph"

Alternate panel design below.

CLICK FOR MORE »

Rare Polytik Modular Synths Set (Only 5 Sets Made) - Limited Edition

Note: links to listings are affiliate links for which the site may be compensated.

via this Reverb listing

You can find demos in previous posts here.

"Limited Edition Polytik Modular Synths / Full Set in Boxes

Mint condition, Super Rare, Only 5 Sets were made. Considered a Modern Art piece.

POLYTIK is a collection of beautifully designed hand-held synth modules exploring the border between play and sound.

Born out of a DIY ethos and the maker community, Polytik has been crafted into something very different – a series of beautifully designed objects in their own right. POLYTIK uses open-source hardware and encourages users to make new modules and hacks.

The brainchild of and in collaboration with, these hybrid analogue/digital devices can produce a palette of sounds ranging from angular rhythmic sequences to abstract noise, pads and drones. "The Core module is loaded with 30 sequences (five discrete patterns per sequence) programmed by John Richards with interviews and comments embedded in the code from musicians and artists including: Jas Shaw (Simian Mobile Disco), Mark Fell, and Frieder Nake."

Specs:
• Created by John Richards (Dirty Electronics) and Jack Featherstone
• Very limited edition run of 5 sets
• The full set contains:
• Core (Blue) - A sequencer, programmer and mixer
• Combi (Black) Voltage-controlled feedback, voltage-controlled oscillator
• VCO (Red) Voltage-controlled oscillator (VCO) and voltage-controlled filter
• Noise (Yellow) Noise generator, patchable feedback networks and voltage-controlled filter"

CLICK FOR MORE »

CG-Products XR 22VCO, Delay 1022, Peak + Hold, sound.report (Short explanation + 15 Min sounds only)

video upload by The Green Man(TGM) + sound.report by Heiner Kruse

https://www.cg-products.de/module/

XR22 VCO FT
VCO with Ring Modulation Input and FSK (Frequency Shift Keying)

Amplitude Modulation (AM) Input
Ring modulation
CV controllable sine/triangle volume
Advanced waveform generation by AM
Rgb-LED for optical control
FSK (Frequency Shift Keying)
Pulse and ramp generation
Switching between two different frequency CVs
Advanced waveform generation by FSK
LFO-, Bass-, High- Mode
Switchable Sync-Mode (from Rev.6)

The XR22 VCO FT is a VCO with amplitude modulation option – which can be used for volume control, or ring modulation of the oscillator’s sine/triangle output. The AM-input signal is added to a DC-voltage adjustable by knob ‘Gain’ (between ca. +/-5V) and the sum voltage is being internally multiplied with the sinewave/trianglewave The result is an oscillator amplitude depending on the ‘Gain’-DC plus AM-input signal. The applied AM-input signal can be mixed to the VCO output signal (modulated or unmodulated) too – a kind of ‘dry/wet’ control with the mix provided on the sine/triangle output. With no AM-input, the XR22 VCO FT behaves like a normal sinewave/triangle VCO, then its volume is controlled by knob ‘Gain’. Whereas with the knob ‘Gain’ in center position, the oscillator tone is becoming almost muted, and the input signal on ‘AM in’ controls the amplitude of the wave completely; thus the VCO can be used as a ring modulator.

The FSK (frequency shift keying) option provides two internally switchable different oscillator frequencies F1 and F2; each controllable by the two big-sized knobs (and their respective fine-tuning knobs and CV inputs). Switching between F1 and F2 can be done manually or by a logic signal (e.g. a gate signal) applied on input ‘FSK in‘. Further, it is possible to use the XR22 VCO FT‘s squarewave output for FSK switching. This will result in ramp or sawtooth (on the sine/triangle output) and pulse (on the squarewave output) waveforms. The falling and rising edges of the of the sine/triangle signal and the duty-cycle of the squarewave output are independently adjustable, and/or controllable via CVs of F1 and F2.

Furthermore, there is a switch for linking F1 to F2. In this case, the ratio between F1 and F2 is remaining the same, independently from the frequency, and ensuring properly 1V/oct. CV tracking.

A switch allowes to enable ‘sync mode’: An applied trigger will restart the wave always at the same point, useful for synced LFO applications and more.

For optical control, the XR22VCO FT has a full-color LED for AM visualization and a 2-color LED for FSK control.

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Whimsical Patching

video uploads by Whimsical Raps

Playlist:

1. Whimsical Patching // 1. Audio-Rate Modulation

from Dani:
"One of my favorite aspects of modular synthesis is that signals we can hear are made of the same basic building block as signals which provide control and modulation -- they're all just voltage moving at different rates!

When we use an audio signal in the place of control voltage, we're touching into a technique broadly known as audio-rate modulation. Using audio-rate modulation in the Whimsical Raps ecosystem is incredibly rewarding, as it can unlock unexpected behaviors in familiar and new modules alike.

Here, Mangrove (our formant oscillator) modulates Silhouette's (our new 'signal combiner') SPOT, which is mixing six audio channels from Just Friends (our six-voice digital oscillator). I noticed that sending Mangrove into SPOT bleeds Mangrove's audio signal into the mix, so I tuned Mangrove to harmonize with Just Friends. This endowed FORMANT changes with new power, adding harmonic depth to the chaotic modulation -- notice the sizzle around 0:30 as FORMANT is cranked up.

Once INTONE adds distance between the ratios of Just Friends' oscillations, I reduce FORMANT to a low-frequency grumble -- I particularly enjoyed Silhouette's delayed vocalizations of these changes across the stereo field. Manually scanning SPOT offsets the input channels we're highlighting, which reveals the new INTONE-spread pitches. Increasing FORMANT introduces audible discontinuities as Mangrove regains its pitch, which are unique in the left and right channels. A final INTONE adjustment is added for performative spice, which is caught by the bucket-brigade device for a muted splash of stereo color."

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Pittsburgh Modular 2025 Summer Update / New Modules / Synth Sale / New Stands / Q&A with Richard

video upload by Pittsburgh Modular Synthesizers

"Richard Nicol offers a summer 2025 update for Pittsburgh Modular with 3 new eurorack modules, new eurorack case stands, a July synth sale, and anything else the chat wants to know. Good times."

https://pittsburghmodular.com/

Introducing Crow 3, Double Helix Wavetable Processor, and Local Florist 2

Pittsburgh Modular Safari Series 9 is full of classic sounds, unique effects, and lo-fi digital chaos.

Crow 3 Filter
The latest iteration of the Crow pairs the destructive power of the original, Safari Series #1 module with the smoothest iteration yet of the Pittsburgh Filter sound. This module can sound beautiful or brutal or both.

Double Helix Wavetable Processor
Ten years ago we created a chaotic, low-fi, digital 9-bit wavetable oscillator module. After testing the prototypes, the limitations of our small company forced us to shelve the finished module before a full production run was realized. Recently, we made the mistake of gifting one of these ancient prototypes to our good friend who promptly posted a video and story on SonicState that caused our inbox to explode. So, due to popular demand, the Double Helix Wavetable Processor is finally here.

Local Florist 2
More feedback and a larger palette of options pushes the Local Florist 2 deeper into a unique world of experimentation. The Local Florist 2 offers a range of possibilities effects including flanging (kinda), chorus (yes), reverb (true), spring-y feedback sounds (all day), karplus strong (not really, but sorta), vibrato (yes), plucky percussive string sounds (yes), and general robot space sounds (often). Thank you for continuing to support your Local Florist!

Price, Availability, and More Information
The retail price for the Crow 3 and Local Florist 2 are $199 each. The retail price for the Double Helix is $299. Because these modules are considered experiments, production has been limited. The modules are available now through the Pittsburgh Modular web shop. More information regarding the Crow 3, Local Florist 2, and Double Helix Wavetable Processor Eurorack Modules is available at pittsburghmodular.com/safari.

Radical Percussion with the SSF Ultra Perc

video upload by Metamyther

"In this video, we explore how to create radical, distorted, and industrial-strength percussion using a killer combo of Eurorack modules: the Steady State Fate Ultra Perc, Bastl Dark Matter, and some Noise Engineering favorites – namely, the Desmodus, Lacrima and Toros Iteritas Alia. Perfect for electronic music producers pushing the limits of rhythm and sound design, we’ll dive into patching techniques that blend analog aggression, feedback saturation, and digital chaos, ideal for industrial techno, experimental beats, and modular percussion that cuts through any mix. This video will give you the inspiration to create truly unique drum textures and rhythms."

Additional Steady State Fate Ultra Perc posts

Introducing Boundary Layer by Schlappi Engineering

video upload by SCHLAPPI ENGINEERING

"Boundary Layer is a triple cycling slew acting as a powerhouse of modulation, audio mayhem, and obscure modular tricks."

00:00 Intro Montage
00:26 Introduction
00:43 Control Overview
01:50 Stereo Drone Patch
04:54 Three Percussive Envelopes
07:50 Envelope, Portamento, and Modulator
10:45 Outro jams

Check with dealers on the right for availability.

8 Patches with Boundary Layer by Schlappi Engineering

video upload by Stazma

"New Schlappi Engineering module alert!!!!
Welcome the Boudary Layer, a triple cycling slew acting as a powerhouse of modulation, audio mayhem, and obscure modular tricks in the tradition of Serge DUSG, the Make Noise Maths, our own Boundary, and others while also bringing a few new things to the table.

I'll show you some of my favorite patches with it, most can apply to other similar modules so it might interesting to anyone.

Have fun!"

Schlappi Engineering BOUNDARY LAYER / triple function generator / extensive playthrough

video upload by BRiES

"BOUNDARY LAYER by ‪@SCHLAPPIENGINEERING‬ is an apex triple function generator for eurorack. It has all the tricks up its sleeves and (as usual) is just a joy to work with due to it's well thought out interface and versatile feature set.
In this video I tried getting across how damn useful function generators are, how BOUNDARY LAYER works and how much fun it is to make patches with the module.
I hope you enjoy the video."

0:00 intro
0:40 feature overview
41:22 patch examples
1:00:15 closing thoughts



Boundary Layer is a triple cycling slew acting as a powerhouse of modulation, audio
mayhem, and obscure modular tricks. Each of the channels can act individually as:
-a modulation oscillator
-voltage controlled slew (including portamento)
-AR/AD envelope (decay or release determined by choice of input).

All three channels are tied together by three global inputs, as well as three outputs which select the MAX, MID, and MIN of all three voltages. Using different combinations at audio rate allows for patch programmable stereo drone synth capabilities.

Features

3 separate channels
3 global inputs
3 combined outputs MAX/MID/MIN
Oscillates from low LFO rate (a minute?) to audio rate (>10kHz with exponential feedback)
A CV input switchable between RISE/FALL/BOTH
Bound input for simultaneous control over cycling rate and amplitude
TRIG input for AD envelopes
SLEW input for AR envelopes and portamento or filtering
EOC ouput header switchable between EOR and EOF
16 HP
Skiff friendly 32mm depth (including cable)
current draw: +12V 170mA, -12V 100mA

Check with dealers on the right for availability.