Dub Techno Patches for Circuit Tracks - 18 Ready Projects

video upload by Isotonik Studios

"Dub Techno Novation Circuit Tracks Sound Pack by A Force Truly Evil puts 120 meticulously designed patches and 18 fully programmed projects straight into your Circuit Tracks, ready to pull apart and make your own. Hear the chords bloom through delay and reverb, feel the sub bass settle deep in the low end, and watch stripped-back sequences grow into wide, immersive soundscapes without ever leaving the instrument.

GET DUB TECHNO NOVATION CIRCUIT TRACKS SOUND PACK BY A FORCE TRULY EVIL
https://isotonikstudios.com/product/d...

EXPLORE MORE A FORCE TRULY EVIL PRODUCTS
https://isotonikstudios.com/brand/a-f...

Your download contains 120 patches built around the core grammar of Dub Techno: space, repetition, and subtle movement. The 56 Dub Chord patches span soft, warm atmospheric textures all the way to darker, mechanical stabs designed for driving club rhythms, because that range is exactly what keeps a Dub Techno set breathing across a full night.

CLICK FOR MORE »

Avalon TB-303 VST by Denver Synth

video upload by manmade madman

"The Abstrakt Avalon was made to perfectly replicate everything in a vintage Roland TB-303, and add features like an additional mod envelope, more knobs for greater control, and excellent metal build quality. But they were rare, expensive on the secondary market, and hard to find. Some people have waited half a decade for delivery.

Until now.

Made by a complete 303 madman deep in a laboratory under strictest of top-secrecy and tightest guarded listening chambers, this digital version gives you everything you could ever want, then goes a little further with more programming modes, tweakable settings for slide/glide and resonance, Devil Fish mods, adds all the filter cartridges (even your own!) new colored skins, and the should-be-patentable EZ buttons. Also included for analog authenticity is the db-cell technology, adding pure analog noise modulation for non-repeatability where it counts; in vintage circuits. Best of all: it matches the hardware through rigorous test harnesses, and countless hours of listening. If it didn't sound authentic, it wouldn't get released.

Thank goodness, it does.

Available now: store.denversynth.com

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VAV N-Wave: Middle-Out Waveshaper

video upload by Magical Synth Adventure

"Join me as I take the @control_voltage VAV N-Wave Middle-Out Waveshaper for a spin!

The N-Wave is a really imaginative waveshaper. Some waveshapers might fold over the peaks of an incoming waveform, some might rectify them - squaring things off like a fuzz pedal. N-wave keeps the peaks of waveform - like the top and bottom of a saw wave - intact, and instead lets you shape and turn up on the volume on a section in the middle of the waveform - leading to unique tones. This is especially true, as you can vary the width of this middle section!"

video uploads by control_voltage

Playlist:

1. VAV N-Wave: Step Sequenced Threshold

One fun live performance (or studio) use for the N-Wave is to connect a Step Sequencer on the Threshold CV and generate different timbres for each step in a sequence. These act as accents and add a lot of life and feel to your sequences and the feel can easily be changed on the fly using something like a Joranalogue Step 8 as your source of steps.

2. VAV N-Wave: Threshold Ring Modulation

In Part 2 of the VAV N-Wave Video Manual, we look at using the threshold control and bipolar vca cv to create new waveforms that have a mixture of normal and ring modulated (quadrature) segments.

3. VAV N-Wave Mangles a Triangle

Here, the N-Wave does quite a number on an unsuspecting triangle wave with the help of some nearby modules. N-Wave is kind of like that one kid's house where everyone hung out and cooked up weird DnD campaigns or something. But for modular signals.

"N-Wave is a novel waveshaper for the Eurorack modular format. Unlike traditional wavefolders and clippers, which operate on the peaks of a waveform, N-Wave leaves peaks intact. All you need to expand your sound palette greatly is a VCO signal and a few twists of the knobs!

Using its internal bipolar VCA (aka four quadrant multiplier, aaka ring modulator) you can apply gain reduction and polarity inversion to an inner portion of the wave slope that you define with the THRESHOLD and OFFSET controls.

All functions can also be controlled via control voltage inputs. LFOs, Audio Rate VCOs, ADSR Envelopes, 1V/Oct signals, sequenced voltages, sample and hold signals, noise, and sub octave signals are all very good choices and can produce results ranging from very musical to very strange. An external detector signal can also be applied if you don't want to trigger the detector on the waveform you're modifying.

If you like, you can also use N-Wave as a high quality bipolar VCA, attenuverter, or ring modulator with the THRESHOLD set to maximum and dynamically mute the effect by applying 0V or a negative voltage to the threshold either using a sequencer or manual control, which allows for hocketing and rhythmic effects.

N-Wave can also operate all the way down to 0hz (DC), so, in addition to audio, it can process LFOs, envelopes, 1V/octave sequences, and any other signal that varies amplitude over time (Sorry, square waves and pulse waves. Your super-sonic rise times are hard to shape in an audible way, but you do work well as control signals).

N-Wave is 10HP and uses Burr Brown op amps for the primary signal path alongside high quality Texas Instruments ICs that are carefully chosen to best fit their roles in the circuit."

Make Noise Morhagene // Glitching out a Multiwave drone

video upload by Dexba

"I have too many samplers, and I started my mission to find better or more interesting uses for each of them. The power of the Morphagene lies in being part of a modular system; for example, why not sequence its parameters with the 0-Ctrl?
After changing the S.O.S. mode to make it suitable for live FX usage, I've spent more time than I want to admit (but that's the fun part of modular, isn't it?) constructing this puzzle of balances between something that would become pleasantly glitched, without being annoying or too repetitive, a controlled chaos, if we want.
Ideally, I would have wanted 2 Multimod, to have both stepped and smooth modulations, or maybe a DXG, to control pauses for the Multiwave, but the game was also making something fun and portable in 62HP, and I am pretty satisfied with this first experiment; it won't be the last, so stay tuned, and feel free to comment with your favorite setting for the Morphagene and ideas for a travel setup."

Mono Two by Monomono: MS20 Spirit Inside Ableton Live

video upload by Isotonik Studios, Monomono Audio · Max for Live Devices, Push Patterns

"Mono Two by Monomono is a monophonic Max for Live synthesiser built around the semi-modular spirit of the Korg MS20, optimised for Ableton Live and fully operational on Push 3 Standalone. In this walkthrough we go from first filter sweep to full patchbay session, covering everything that makes this device tick. Monomono have expanded on the original MS20 architecture with dual filter circuit switching, tempo-synced LFO, bipolar and unipolar envelope modes, stereo spread, and a guided patchbay with attenuator and multiplier utilities.

GET MONO TWO BY MONOMONO
https://isotonikstudios.com/product/m...

In this walkthrough, we'll explore:

Dual oscillator architecture with waveform selection, pulse width, and ring modulation
K35 versus OTA filter circuit comparison and real-time switching
Filter sweep with peak resonance and highpass filter in action
LFO shapes, free and synced modes, phase reset, and tempo sync
Envelope Generator 1 with delay, attack, and release for frequency modulation
Envelope Generator 2 bipolar and unipolar modes, hold, and legato switching
Modulation visualisation on dials showing scope and depth of applied modulation
Stereo spread control from full mono to wide stereo
Patchbay walkthrough with attenuator, multiplier, and guided orange-highlight routing
Push 3 Standalone patchbay navigation and sample-and-hold patch demonstration

CLICK FOR MORE »

Introducing the Pittsburgh Modular Lifeforms SV-2

video upload by Pittsburgh Modular Synthesizers

Pics and details via Perfect Circuit.

[You can find additional demos by Starsky Carr, BoBeats, and Molten Music Technology further below.]

Pittsburgh Modular Lifeforms SV-2
Lifeforms SV-2 from Pittsburgh Modular is a duophonic analog semi-modular keyboard synthesizer that honors classic East Coast subtractive architecture while packing a punch of flavorful twists afforded by modern technology. A full-blown revamp of the SV-1, it features updates to nearly every aspect of the instrument: new oscillator core, classic PGH filters updated with new character modes and overdrive stages, new spring reverb, new response curves and range modes on the ADSR envelopes, a custom 37-key keyboard with pitch-bend and mod wheels, and a redesigned interface with eighty-four patch points along the top. Moreover, a 24hp Eurorack expansion bay with three power headers sits alongside them, so external modules of your choosing can be dropped into the signal path at any point.

CLICK FOR MORE »

nonlinear circuits spectrum shaper

video upload by cirtcele

"I'm still learning how to use this thing but here are some excerpts from a patch with Tinkle and FM OP via Product wavefolder both fed into the Spectrum Shaper."

via nonlinear circuits

"36 channel voltage controlled comb filter aka string filter.

This module has some history. In 2018, I was part of a team putting on a show with CellF at the Todays Art festival in Den Haag. I popped down to Rotterdam to visit Dennis (aka Mono-Poly) and his studio of vintage lab gear. Dennis had an incredible patch going centred around a Bruel & Kjaer 36 channel Spectrum Shaper. Listen to his album Testlab to hear how it sounds. I just knew I had to make something like it one day. This type of filter is often called a ‘String filter’, used to emulate stringed instruments tho don’t feel limited by that.

Fast forward to 2026, I read an AES paper by R. Burhans describing his 36 channel comb filter. It reminded me there were some designs in Electronotes, so I looked them up and discovered they were both inspired by and heavily influenced by Burhans, particularly in terms of the comb filter frequencies and spacing. One was a 40 channel version by Ian Fritz using transistor based filters. He had an interesting mod, originally suggested by Lester Ludwig, where each set of 6 filters had a feedback pot. Some screenshots from these articles are at the end of this build guide. The relevant Electronotes issues 107, 115 and 116 can be found online.

The Bernie Hutchins design used 39 regular op amp based filters, along with Ian’s feedback per 6 filters mod and added an inverter so the feedback could be positive or negative (so, centre off). Negative feedback ‘flattens’ the peaks somewhat and smears the sound, positive feedback makes the peaks narrower and higher (if tuned for it, you can make them self-oscillate, see notes). Bernie also added a noise gate on the output, summing 39 channels is always going to be noisy.

CLICK FOR MORE »

Ranger FX Snare Trap Rhythm Device

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

Note the video above is from 5 years ago. This appears to be the first post to feature the Snare Trap.

via this listing

Additional Perfect Circuit listings

via Ranger FX:

"The Snare Trap is a drum machine you play guitar or synth/keyboards through! It’s designed to be used either on the desktop – by hand – or on the floor – by foot. The drum sounds are bass drum, snare, and hi-hat, and these can be individually triggered externally by a CV – so it’s very useful for modular synthesists.

CLICK FOR MORE »

Sinevibes Shift frequency shifter

Playlist:

1. Sinevibes Shift frequency shifter – with KORG NTS-1 mkII
2. Sinevibes Shift frequency shifter – with Elektron model:cycles and KORG NTS-1 mkII

https://www.sinevibes.com/korgshift/

"Shift is a frequency shifter for KORG prologue, minilogue xd, NTS-1, NTS-1 mkII, NTS-3 and microKORG2. It features two distinct models: a frequency shifter and a ring modulator. The frequency shifter model shifts each frequency partial in the input signal’s spectrum upwards or downwards by an equal amount in Hz, changing the original ratios between all frequency partials; this makes the sound more and more atonal, un-pitched. The ring modulator model uses a 2× oversampled sine oscillator as a multiplier of the input signal, producing a new spectrum with all frequency partials shifted both upwards and downwards; this algorithm makes the sound even more atonal and metallic, bell-like.

HIGHLIGHTS

Studio-grade DSP algorithms, calibrated specifically for KORG’s hardware platform.

Individually chosen mapping for every plugin parameter, providing a very natural feel.

Built-in lag filters for noise-free, ultra-smooth parameter adjustment.

Tested and optimized for maximum performance and stability on each individual device type."

NEW!! Polyrex Synthesizer Breakdown | Features That Matter

video uploads by Safari Audio

Playlist:

1. NEW!! Polyrex Synthesizer Breakdown | Features That Matter
2. PolyRex: The Synth Everyone's Talking About - Mixed by Jellz
3. Is PolyRex the Ultimate Juno-Inspired Synth Plugin? - wil maker

"Check out PolyRex here: https://safariaudio.com/products/poly...

Meet PolyRex, the vintage polysynth of our dreams! It captures everything we love about the classic Juno series- the lush chorus, organic movement, warm character, and nostalgic vibe that makes you want to keep playing.

In this video, Noam and Orel take a deep dive into PolyRex, exploring its features, and the wild sonic possibilities.

Let us know what you think in the comments! 👇

0:00 Intro
1:38 Oscillator Section + Envelope Section
2:33 Filter Section
3:13 LFO Section
3:46 Arp Section
4:03 FX Section
4:47 Mod Wheel Section
5:51 Outro"

Inspired by some of our favorite analog polysynths from the early 80s, POLYREX was built around a simple idea: make a synth that feels immediate, fun, nostalgic, and filled with inspiring sounds.

We loved the spirit of classic Japanese polysynths: the glowing chorus, the drifting movement, the soft-but-punchy filter, and the way one simple chord can suddenly feel emotional.

But we didn’t want to build a museum piece. POLYREX is our version of that world, pushed through the weird, colorful Safari lens. Faster, stranger, more playful, and made for modern producers who want to create instead of menu dive.

From dreamy pads and unstable tape keys to punchy basses, glassy plucks, warped chords, and cinematic nostalgia, POLYREX gives you vintage-inspired poly synth sounds with its own Safari personality.

VINTAGE-INSPIRED OSCILLATOR SECTION
Square Oscillator - Classic poly synth bite and harmonic weight
Sub Oscillator - Adds deeper body and low-end support
Noise Generator - Great for air, texture, percussion-style sounds, and grit
PWM Control - Pulse-width movement for animated vintage tones
LFO Pitch Modulation - Adds motion, drift, and slightly unstable character

CLICK FOR MORE »

Trident Groove Anomaly

video upload by rimela

"A sun‑soaked, feel‑good jam built entirely on pure Korg energy.
No MIDI, no sequencing, just hands‑on performance and vintage machines talking to each other the old‑school way.

The Korg Rhythm 55B drives the whole track, sending trigger pulses to fire the octave bass groove on the Korg Trident while also punching out those bright Brass stabs. The MS‑20 adds its signature snappy 16th‑note noise percussion, giving the groove that early‑80s disco edge.

Everything is played live, with the Trident’s Strings opening up the mix into a warm, summery shimmer.
Happy, uplifting, and made to kick off the summer with a smile."

Jynth – Physics Analog Synth

video upload by Fingerlab

"Meet Jynth, the new synth by Fingerlab for iPhone, iPad and Mac — the warm, analog soul of the iconic Roland Juno-106, reimagined with a groundbreaking Physics Engine for organic, living sound.

Get it now for free on the App Store:
https://apps.apple.com/us/app/jynth-p...

Designed for leads, basses, keys & pads, Jynth delivers that classic vintage character you love — housed in a meticulously crafted, photo-realistic interface that looks as good as it sounds.

Shape your sound with a full analog-style signal chain:
From the dual oscillators and resonant VCF filter to the ADSR envelope, LFO and built-in arpeggiator — every parameter has been carefully tuned to feel as musical as it sounds.

Go further with 5 studio-grade effects:
Tremolo, Flanger, Chorus, Delay & Reverb — stack them to build rich, evolving textures and cinematic soundscapes.

Bring your presets to life with the Physics Engine:
This is where Jynth truly stands apart. Assign up to 8 physics-driven modulations to any synth or effect parameter. Gravity, bounce, impulse, angle — let the laws of physics shape your sound in ways no LFO ever could. Every preset becomes unique, every performance feels alive.

Play anywhere, plug into anything:
Jynth is universal — one purchase gives you the full experience on iPhone, iPad and Mac. Use it as a standalone app or load it as an AudioUnit (AUv3) plugin directly inside your favorite DAW. Pair it with your MIDI controller via MIDI In support, and your sound is always there — even when your screen is off, thanks to Audio Background mode.

Unlock the Full Version to access preset creation, all factory presets, FX, Physics Engine, Randomizer and Undo.

CLICK FOR MORE »

Curves & Membranes - Software Bézier Monosynth w. Orbital Modulators & Membrane Filter

video uploads by Unusable Engineering

Note this is the first post to feature Unusable Engineering. You'll find additional plugins by them below.

Playlist:

1. Curves & Membranes - Software Bézier Monosynth w. Orbital Modulators & Membrane Filter - Walk Through
2. Curves & Membranes - Sound Demo and Patch Ideas - No Talking
3. Curves & Membranes | Synthesizer Patch Creation & Sound Design Walkthrough
4. Curves & Membranes v1.1.0 | New Features and Sound Examples
5. Curves & Membranes Filter Walkthrough | Understanding the Membranes
6. Unusable Engineering Jam | Curves & Membranes in a Different Context
7. Unusable Engineering Update | Curves & Membranes Features and Grain Discharge
8. Unusable Engineering Breakfast Jam | Curves & Membranes + Full Bundle

"Curves & Membranes is a focused mono synth built around a shapeable Bézier oscillator, two visual modulation systems, and a membrane-based filter. In this full walkthrough I go through the core ideas behind the instrument, how the oscillator works, how the preset morphing and orbital modulators create movement, and how the membrane filter shapes the sound.

The goal with Curves & Membranes was not to make a do-everything synth, but to build something more specific: a synth where sound, shape, and motion are tightly connected, and where the structure stays easy to understand while still allowing a lot of character and timbral movement.


More info: https://www.unusable.net/"

And a playlist of addtional plug-ins by Unusable Engineering:



Playlist:

1. Synaptic Resonance | Neural Vocoder Walkthrough

Synaptic Resonance is a neural vocoder-style effect where incoming audio, or an optional sidechain, excites a two-dimensional neural simulation. That simulation is then read back somewhere else and used to animate a bank of forty steep resonant band-pass filters.

In this walkthrough I go through the basic idea behind the plugin, show how the Stim Plane and Read Plane shape the behavior, and explain how the neural controls affect the way the model reacts, spreads, remembers, recovers, and settles.

The core idea is fairly simple: the input excites the model, and the output is affected by reading the model. That is what gives the plugin its character. It can behave like a vocoder, a resonant filter instrument, or something more unstable and alive depending on how it is set up.

CLICK FOR MORE »

Jynth – Physics Analog Synth - Teaser

video upload by Fingerlab

"Meet Jynth, the new synth by Fingerlab for iPhone, iPad and Mac — the warm, analog soul of the iconic Roland Juno-106, reimagined with a groundbreaking Physics Engine for organic, living sound.

Jynth will be available on June 4, 2026.
Pre-order it now for free on the App Store:
https://apps.apple.com/us/app/jynth-p...

Designed for leads, basses, keys & pads, Jynth delivers that classic vintage character you love — housed in a meticulously crafted, photo-realistic interface that looks as good as it sounds.

CLICK FOR MORE »

Voltage Starved Compression Goodness with Hungry Thumb

video upload by Robots Are Red and Hive Mind Synthesis

"Hungry Thumb, by Modular 4 the Masses.

This is an 8-10hp Voltage Starved Compressor module with additional side chain and EQ.

Thank you to Modular 4 the Masses for providing the module for this video."

00:00 - Intro
00:45 - Demo with Kick only
06:58 - Full Drums
09:14 - Plucky Voice
12:00 - Full Mix

HungryThumb is a Eurorack adaptation of a compressor named Engineer's Thumb, typically built as a guitar effect pedal. Juanito built an Engineer's Thumb early in the tin can synth journey, naively replicating the 9V core of the circuit, and then didn't really know what to do with it.

Until they put an 808 kick drum through it. As a kick drum processor, this compressor shines brightly, especially when the Starve settings reduces the core circuitry voltage to 9V and lower. You can get even the purest 808-style kick drum signal, which will be mostly a sine wave, to crunch, clip, gate, fizz and fold. Do you need hardstyle kicks in your modular? This can get you there.

The Engineer's Thumb this circuit is based on uses an LM13700 OTA chip as the adjustable gain portion. These chips are a bit noisy, so an innovation of Engineer's Thumb was to put the gain section in an op amp inverting feedback loop, meaning while the compressor is set to its highest gain, the OTA is set to its lowest gain, and will theoretically be creating less noise. The theory checks out, but I'm not sure how much we Eurorack people care about noise floor.

CLICK FOR MORE »

Make Noise NUSS | Immediacy vs Flexibility?

video upload by Braintree56

"This video is all about the Make Noise New Universal Synthesizer System.
What I keep coming back to is this idea of tradeoffs.
This system offers a lot of immediacy. It’s fast, playable, and designed in a way that makes it easy to get interesting results quickly. But at the same time, that design comes with some limitations in flexibility and creative control.

In this video, I wanted to explore that balance.

To me, this doesn’t really feel like a traditional modular system made up of independent modules. It feels more like a single instrument that’s been broken into parts—and that changes the way you approach patching."

How's the Serenity?

video upload by cirtcele

"Quad reverse sigmoid chaos module with CV inputs, sync controls and mixed outputs
https://www.nonlinearcircuits.com/mod...

single 1U version - https://www.nonlinearcircuits.com/mod..."

"This module is a set of 4 reverse sigmoid chaos circuits, running at different frequencies, there are pots to feed each section into another and influence, sync – sort of, the action. There are also CV inputs for each section which affect the reset or crossover timing, for the faster ones the results are obvious. For the slower ones, give it a few hours.

The reverse sigmoid circuits are similar in concept to the mackey-glass based design used in the NLC Frisson, but are greatly simplified to a bare minimum of parts. Simply an integrator, two all pass filters and a nonlinear stage with two feedback paths. The nice thing about them is you can use any capacitors you like, so long as all three are the same, and the circuit will work with no other mods required. The sections in this module use 1uF, 10uF, 2x 1000uF in series (so 500uF) and 2x 2200uF in series (so 1100uF).

They work quite differently to the Sloth chaos circuits, with a number of ripples or rolls between each attractor, also the three outputs track each other, the faster ones are delayed by a few seconds, the slower ones by minutes. The intent of having 4 different circuits running together with pots to get them to influence each other is to have a module that can create longer tracks with many different but related musical events happening and, of course, weird delayed CV effects. Think of a band where the members all do their own thing but every now and then the sounds and patterns connect and achieve structure, which slowly scatters and reforms in new ways.

Feel free to change the 1uF caps to a higher or lower value, similarly for the 10uF. Stack capacitors on top of each other to get 20uF, or use Tayda 22uF caps and stack them. See pictures on pg6 for info on which caps to change. Make sure the capacitors have at least a 25V rating or higher.

If you want to use larger values than 1000uF and 2200uF, make sure they will fit on the PCB and/or thru the panel holes (1000uF on PCB are 10mm diameter, 2200uF panel holes are 16.8mm)

There are also two difference rectifier circuits which output complex mixes of the individual chaos circuits."

1U REVERSE SIGMOID
DESCRIPTION/USAGE

6hp

This module is a reverse sigmoid chaos circuit; it can be built to run as a fast or slow CV source, or even as an audio/noise source. This is a single version of the four chaos circuits in the NLC How’s the Serenity module.

The reverse sigmoid circuits are similar in concept to the mackey-glass based design used in the NLC Frisson, but are greatly simplified to a bare minimum of parts. Simply an integrator, two all pass filters and a nonlinear stage with two feedback paths.

The nice thing about this design is you can use any capacitors you like, so long as all three are the same the circuit will work with no other mods required. The capacitors are marked ‘C’ on the PCB, 1uF is a good mid-range value to install, but 10uF, 22uF are good too albeit much slower. Lower values than 100nF get you into audio rate territory. Make sure the capacitors have at least a 25V rating or higher.

This works quite differently to the Sloth chaos circuits, with a number of ripples or rolls between each attractor, also the three outputs track each other, the faster versions are delayed by a few seconds, the slower ones by minutes.

The Input expects a positive CV, negative going CVs won’t hurt but will have no effect. The CV signal feeds into the first all-pass filter stage via 10k and a diode, this is different to the method used on How’s the Serenity. On slower builds, using 10uF caps, the effect of the CV will be washed out to some extent. It will still have an effect but not as noticeably as on the faster versions.

Genki Instruments Katla #2 | Winterdagen

video upload by Winterdagen

"Here's another patch on the gorgeous ‪@genkiinstruments‬ Katla synthesizer.

For this keys patch I made use of Katla's voice rotation, with one of 5 voices tuned an octave higher than the rest, resulting in unpredictable pitch jumps in the melody, which I love. I didn't make use of Katla's oscillators for this patch, in stead the sound is coming from the filter with the resonance fully up, which tracks pitch very nicely when tuned with the simple calibration mode of holding down the two filter mode knobs.

I'm a big fan of these singing filter sine waves, which always feel a tiny bit unstable which makes them sound magical. To top it off I'm modulating the panning of the voices, I blended in some of Katla's lovely noise for some warble and I added some of the amazing internal reverb, which reminds me a bit of my Vongon Ultrasheer. I love this sound so much and I've never heard any other synth make it quite like this!

You don't see me playing the keys in the video, but I played this patch for hours, instant inspiration really. This melody is came out of that improvisation.

Thank you for watching!

ps. sine waves generally don't translate all that well on phone/laptop speakers, so speakers/earbuds/headphones advised.

Katla is shipping as of this week, find more info at: https://genki.is/"

Making Rythms from Feedback with the Zakal from Colossus Audio and the Metal Fetishist

video upload by Body Synths

"The "pairing series" is back! In this one we explore the Zakal, a spring reverb / feedback device from Colossus Audio. We start by using the Metal Fetishist as a sound source but quickly flip the tables and use it as a sound processor instead, making Rythms with the feedback tones that come through its input from the Zakal.

The background noise you may hear comes from my microphone, not from the instruments. I will be more careful next time.

https://bodysynths.com/ | https://www.colossusaudio.com/"

"Zakal is a resonant audio feedback instrument. It generates feedback using reverb springs, with the feedback signal shaped by a low-pass filter and a delay in the feedback path or simple feedback. Additionally, Zakal can function as a spring reverb effect, offering versatile sonic possibilities.

Zakal contains amplification and recovery circuits designed to generate audio feedback through its reverb springs.

A switch allows you to engage the LPF and Delay within the feedback path, enabling creative control over the frequencies fed back into the spring reverb, shaping unique resonant textures.

When used as a spring reverb effects unit, the POST EQ provides precise shaping of the wet signal, offering enhanced tonal flexibility.

At the end of the chain, a 3-band EQ provides additional shaping of the output, offering precise control over the final sound. When used as a spring reverb effects unit, the EQ enhances the wet signal for even greater tonal versatility.

ZAKAL does not include a power supply. It operates on a standard 9V DC (negative center, 2.1mm barrel plug) compatible with most guitar pedal power supplies. If you do not own one feel free to reach out, and I’ll help you find a suitable option."

Genki KATLA - THE VOLCANO SYNTH!! Now Available

video upload by Starsky Carr

"What happens when a synthesizer completely breaks the rules?
In this video, we explore the Genki KATLA — a truly unique polysynth inspired by Icelandic volcanoes, featuring a rotating voice architecture, hybrid signal path, and some of the most unpredictable sound design possibilities I’ve come across.

This isn’t your typical analog polysynth. Each of the five voices can run independently with different waveforms, octaves, and modulation — creating evolving textures, harmonic movement, and generative-style sounds that feel closer to modular synthesis than traditional keyboards.

🎛️ What makes the KATLA special?
• Rotating voice polyphony (round robin-style synthesis)
• Independent per-voice oscillators & tuning
• Digital oscillators + analog filter signal path
• Looping envelopes reaching audio-rate modulation
• Phase distortion, wavefolding & multiple distortion types
• Tape-style wow, flutter & pitch instability effects
• Stereo voice movement & evolving spatial modulation
• External inputs for processing other gear

From lush ambient pads to aggressive, evolving sequences — this synth can go places most instruments simply can’t. It’s not about recreating vintage sounds… it’s about discovering entirely new ones.

💸 At around €5000, this is definitely not a beginner synth — but for sound designers, and anyone looking for something truly different, it well worth a look."

Genki Katla Sound Design: Making sounds from scratch and exploring
video upload by MR TUNA Music

Chapters: 0:00 - Intro 0:16 - Init patch 0:44 - Filter sounds 1:26 - Raising 1 voice 1:43 - Creating a basic pluck sound 2:24 - Aftertouch controls 2:45 - Bring in a little reverb 2:56 - LFO to filter cutoff 3:16 - LFO to reverb mix 3:46 - Keyboard cutoff 4:00 - Osc 3 Square wave 4:23 - Sub oscillator 4:54 - KATLA parameters 5:01 - Rústir wavefolder 6:08 - Rökkur stereospreader 6:37 - Skriða envelope randomizer 7:27 - Aska random modulations 7:57 - Glóð tape stops and flutters 8:35 - Skjálfti ??? 9:14 - Kvika slow tape modulations 9:38 - dark pads 10:20 - Móða voice detuning 11:20 - Katla sounds with aftertouch 13:28 - Thanks for watching

"Hey guys! Very very excited to be presenting the Genki Katla to you all... I am truly in awe of the sound of this very unique and powerful instrument.

I thought the best way to get to know the synth is to start from scratch so in this video we'll go full hands-on with the Genki Katla, exploring (almost) every parameter and building sounds from an initialized patch.

From some raw drone layers and gritty textures to evolving pads, rhythmic sequences, and atmospheric beds, we will see just what this instrument can do, discover new sounds, and maybe make some friends along the way 🙏

If you're into sound design, unique synths, or just love discovering new instruments, this one is for you!

HUGE thanks to Genki for letting me a part of this with them and showing off this super cool synth.

No money was paid, no agreements were made... these are my real thoughts on this very premium synthesizer and I will be sharing lots more."

Press release follows:


Genki Instruments announces availability of Katla as Voice Rotating Polyphonic Synthesizer inspired by its natural namesake

REYKJAVIK, ICELAND: having twice blown European musical minds thanks to show-stealing showcases at SUPERBOOTH25, May 8-10, Berlin, Germany and Machina Bristronica 2025, September 27-28, Bristol, UK, before adventuring across the pond for a repeat performance at Buchla & Friends 2026, January 24-25, LA, CA, USA, Reykjavik-based instrument developer Genki Instruments is proud to announce availability of the eagerly-awaited Katla as a Voice Rotating Polyphonic Synthesizer inspired by Iceland’s largest subglacial volcano as its natural namesake — readily representing the company’s first foray into analogue synthesis, albeit one that uniquely utilises a set of wildcard parameters to infuse it with organic, unpredictable behaviour as an instrument that is worthy of that legacy, excelling at generating rich, evolving, multi-layered textures, where each note stirs, swells, and erupts in its own distinct way — as of March 31…

Clearly Katla’s inspiration runs through its ‘volcanic’ veins. After all, it is framed by side panels and knobs forged from authentic Icelandic lava, giving each instrument a tangible connection to the volcanic forces that inspired it. That this synth should surely roar is a given. Genki Instruments inevitably chose, therefore, to kit Katla out with four independent distortion destinations, the most unruly of which is a stereo CMOS (Complementary Metal Oxide Semiconductor) Drive effect — a characterful saturation stage, pushing tones from warm and rounded to fractured and snarling.

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