Signal Flow Podcast Ep3: Playing live with Serge & GRM Tools Atelier (in quad)

video upload by Signal Sounds and Tom Churchill

"In this episode, Luke breaks down his setup for a recent live performance at GLOSS (the Glasgow Library of Synthesised Sound), which involved GRM Tools Atelier, Max for Live, and a two-panel Serge Paperface system (hand-built by Tom). We also round up a few new arrivals in the showroom, including the UDO Audio DMNO, ASM Hydrasynth and Shakmat Modular Ballista Blast, and share a few recommendations.

Get in touch with questions, feedback and suggestions via signalflow@signalsounds.com

Some of the gear discussed:
https://www.signalsounds.com/udo-audi...
https://www.signalsounds.com/asm-levi...
https://www.signalsounds.com/shakmat-...

Recommendations
La Synthèse Humaine: / @lasynthesehumaine6932
Innis Chonnel & Loris S. Sarid: https://lorisssarid.bandcamp.com/albu...
Elori Saxl & Henry Solomon: https://elorisaxl.bandcamp.com/album/...

Chapters:
00:00 Intro
01:21 UDO Audio DMNO
03:22 ASM Leviasynth
04:44 Fairfield Circuitry Placeholder
10:11 Shakmat in-store & Ballista Blast
13:58 Luke on live performance
37:18 Tom on live performance
46:08 Recommendations & outro"

Animal Factory Dirty Mirror × Korg Monologue // Fuzz Synth Jam (No Talking)

video upload by Animal Factory Amplification

"Use headphones for this one! Animal Factory Dirty Mirror dual parallel fuzz pedal running a Korg Monologue analog synth — no talking, no post-processing, just raw tone. This was recorded in one take to bring out how the Dirty Mirror becomes an instrument in itself.

A love letter to shoegaze, noise, and harsh textures, the Dirty Mirror pairs a modified Shin-Ei Superfuzz (the "Burn" channel) with a heavily modded Big Muff Pi (the "Churn" channel), plus a pre-fuzz delay modulated by an internal LFO and envelope follower. Hand-built in Mumbai by Animal Factory Amplification and debuted at Superbooth 2025.

Here it's sculpting the Korg Monologue's aggressive analog voice into fuzzscapes, drones, seasick vibrato, and pitch-shifted square-wave chaos. Recorded dry — no EQ, no reverb, nothing but the pedal and the synth. Drums from an MFB Tanzmaus (not processed)

🎛 SIGNAL CHAIN
Korg Monologue → Animal Factory Dirty Mirror → interface"

Animal Factory Dirty Mirror Fuzz on MFB Tanzmaus | Dual Distortion Delay Jam

video upload by Animal Factory Amplification

"Use headphones or speakers with good bass! Dual fuzz chaos meets beat-driven synthesis! Watch the Animal Factory Dirty Mirror transform the MFB Tanzmaus drum machine with creative distortion and delay manipulation. This is pure experimentation—no tutorial, just sonic exploration.

Gear featured:
Animal Factory Dirty Mirror Dual Fuzz Pedal
MFB Tanzmaus Drum Machine

Not just a shoegaze and noise rock machine - the Dirty Mirror is the perfect fuzz for musicians exploring wall-of-fuzz sounds, experimental synthesis, drum machine effects processing, and unconventional gear combinations."

"The Dirty Mirror takes these two behemoths of sonic perversion and adds an extra layer of nasty – using the core circuit of our Coma Reactor Eurorack module.

This three footswitch, 15 knob pedal looks complicated – but it’s not:

The BURN Channel (left side) is based on our Chemical Burn circuit, a nastier FY-6 variant.

The CHURN channel (right side) is based on a heavily modded Big Muff Pi.

There is a short delay circuit before the fuzz circuits.

Both the fuzz circuits can switch between the input sound, 100% wet delayed sound or a blend of wet and dry.

The fuzz circuits are then mixed in parallel into a high-headroom output section.

For added sickness, the delay time can be modified by an envelope follower or LFO.

Choose your filthy reflection – from straight dual parallel fuzz textures, to seasick vibrato to long slow quasi-chorus phasey apocalyptica.

The delay can be used on its own for slapback, chorus and vibrato effects.

Yes, it can get very noisy.
No, you can’t do anything about it - so weep in pain and pleasure, and submit to the swarms of square waves that joyfully fill your room."

Introducing Cosmic Debris from WMD and Infrasonic Audio

video uploads by WMDevices

"Cosmic Debris is a powerful delay and reverb engine built for modular explorers who want more than just echoes. With 16 interactive delay lines, multiple performance modes, and a design tuned for live use, Cosmic Debris can move from precise rhythmic repeats to infinite atmospheric washes in an instant."

Playlist:
1. Introducing Cosmic Debris from WMD and Infrasonic Audio
2. 3 patches with WMD Cosmic Debris
3. WMD Cosmic Debris - In-depth overview and tutorial

See additional posts featuring Cosmic Debris here.


"A collaboration born in the Denver modular community

Cosmic Debris began as a design by Nick Donaldson of Infrasonic Audio, a fellow Denver modular enthusiast we met through our monthly Freq Boutique gatherings. Nick approached WMD for advice on manufacturing, and as soon as we heard the sounds he was creating, we knew there was something special.

From there, the collaboration took off. We worked closely with Nick to refine the design, bringing in ideas to expand the feature set, streamline performance controls, and ensure the module would be rock-solid for production. The process has been as rewarding as the results: not only has Cosmic Debris grown into a truly versatile delay and reverb processor, but we’ve had the joy of building a deeper friendship through the design journey.

Cosmic Debris is a powerful delay and reverb engine built for modular explorers who want more than just echoes. With 16 interactive delay lines, multiple performance modes, and a design tuned for live use, Cosmic Debris can move from precise rhythmic repeats to infinite atmospheric washes in an instant.

At the core, Spray transforms traditional delay taps into massive ambient reverbs, while Scatter reshapes the feedback paths and interactions between lines to create ever-changing textures. Time and it's shift function SLEW take traditional modulation and flip it on its head with huge risers, crossfading delay time changes, and hands on control over the energy of the sound caught in the buffers.

A built-in band-pass filter lets you carve space in the mix or push the signal into motion with CV modulation.

Cosmic Debris is designed with performance at its heart. Blast delivers a momentary boost into the delay input as well as 100% send level (in send mode) for explosive bursts of sound with natural tails, while Send Mode turns the Mix control into a CV-controllable send/return level, perfect for insert-style processing.

Flexible sync options include clock input, tap tempo, or free-running mode, keeping you locked in rhythm or drifting into uncharted time. A dedicated Freeze function captures audio into a timeless loop, letting you hold textures indefinitely.

Three unique processing modes, Blur, Ratio, and Warp, expand the palette even further, from smearing reverbs to pitch-shifted delays. Combined with its intuitive interface and deep modulation capabilities, Cosmic Debris is equally at home in a live performance rack or a studio sound-design system."

Playing with Parting - Old Blood Noise Endeavors & Emily Hopkins

video upload by Molten Music Technology

"Running a simple bass line through the stunning Parting glitch/ambient machine and exploring the sounds. It's a very touchy feely pedal that's wasted on guitarists and really should be a Eurorack module. Full review coming soon from a synth perspective.
I bought this pedal myself."



"Parting is a box of pleasant surprises. Moments of chance will give bursts of a glitch delay that can smear into a reverb, modulated by tremolo or vibrato, filtered, and, most importantly, dissolved into lofi aliasing or stretched out reverse. All of this may jump around in halves and octaves of itself - it’s up to you and Parting, together.
Controls

Dissolve has two functions. Below noon, it reduces sample rate, creating an increasingly degraded version of the signal. Above noon, it reverses the signal, and repeatedly cuts the reverse clock in half as the knob is turned, creating an increasingly long and degraded reverse.

Rate sets the rate of the modulation LFO, which is also the frequency of triggers for moments of chance.

Depth sets the depth of the LFO.

Shape sets the LFO shape: Sine, Square, Reverse Saw, Saw, Random Sine, Random Square, Envelope

Chance allows random bits of signal to enter the delay/reverb buffer during an LFO cycle.

Smear adds diffusion and feedback to the delay lines, turning them into a lush reverb as the knob is turned up.

Glitch creates various clock subdivisions.

Time sets the timing of the delay/reverb, as well as the reverse.

Filter sets the cutoff point of the post-dissolve filter.

Mix sets the blend of dry and wet signal.

Aux switch for tap tempo, half speed, or preset switching.

Soft-touch On/Off footswitch with relay switching for minimal switch noise"

CLICK FOR MORE »

Passive Bandpass Filters Are GOATED | AudioThing Octaves

video upload by HAINBACH and AudioThing

"Passive bandpass filters are an obsession of mine, so it was just a question of time until AudioThing and me would make a plugin of the special subset called octave filters. Octaves is out on now: https://www.audiothing.net/effects/Oc...

My Music: http://hainbach.bandcamp.com"

"Hainbach’s Bandpass Filter

Octaves is our latest collaboration with Berlin-based composer and YouTuber Hainbach. It is a filter plugin designed to take apart the audio spectrum in spreads of octaves, allowing for unique and enchanting spectral sound design effects. Octaves gives you a retro-scientific approach to sound that echoes the timeless productions created in the BBC Radiophonic workshop or the WDR Studio für Elektronische Musik by the Avantgarde masters, and modern places like Willem Twee, Strøm, and Hainbach’s own laboratory.

Octaves is available for macOS, Windows, and Linux (VST2, VST3, AU, AAX, CLAP).
It’s also available on the App Store for iOS and iPadOS (AUv3 and Standalone).

CLICK FOR MORE »

SYNTH-WERK SW 735 MK II BODE FREQUENCY SHIFTER

video upload by SYNTH-WERK

"The model 735 Mark II is, like its predecessor, the model 735, a most sophisticated and powerful signal processor. In some of its typical applications it can change known sounds with a harmonic overtone structure into new sounds with an entirely different and new arrangement of overtones through additive and subtractive frequency shift. It thus contrasts with and complements the known pitch changers (such as the HARMONIZER), which operate with multiplicative frequency shift.

At the MIX output jacks, a mixture of the OUT A and OUT B signals is obtained, which in the center position of the MIX control is that of a ring modulator.

'...I remember my father telling me that he had completed building his new Bode Frequency Shifter Mark II. This was the unit he built for himself, for his own studio. Soon after, Florian Schneider of Kraftwerk came to visit my father at his home and studio. The Bode family were all big fans and collectors of Kraftwerk music. My father was happy for Florian's visit. He was not planning to sell and part with his new Frequency Shifter. It was a nice visit. He told me, a happy Florian Schneider left with the Bode Frequency Shifter Mark II under his arm.'

Peer Bode"

Moog Model 10 Demo track. 'A Study in Discrete Voltage'.

video upload by PaulLawlerMusic

"Available to buy :



All sounds were generated using a Moog Model 10 modular synthesizer built around the revered 901 oscillators.

Recorded as a series of overdubs from a single system.
Patched by hand, no presets, no fixed signal path.
The piece evolved through small changes in voltage and routing.
What you hear is the system itself—direct and unrepeatable."

Intellijel Swells - Multi-Model Reverb Module with Swell Generator

video upload by Intellijel

"Swells is a multi-model reverb module, with a built-in modulator we call the 'Swell Generator'.

Some feature highlights of Swells include:
Nine unique studio-grade reverb models
Fully stereo signal path
Eight reverb parameter sliders
Ebb & Flow - two per-model parameters
Swell Generator - aka envelope follower with four modes.
LO-FI with Min & Max setting
Freeze, Reverse and Burst FX
20HP Module"

Intellijel Swells | Four synth explorations

video upload by Jay Hosking

"Four mostly ambient pieces with Intellijel's new reverb and other hardware.

Fair warning: Intellijel sent me the Swells and Jellymix. Take that as you will. Considering how much other Intellijel stuff I use, and considering how much I'm a sucker for reverb, I was excited to try this one out.

00:00 - Omnichord ambient
03:49 - SubH Replay ambient
08:22 - S-4 OVUM ambient
12:35 - Hexdrums jam

Undoubtedly, we're living in a golden era of reverb hardware. I've got more reverb than one human needs, but I love it so much. One thing that means, though, is that I'm looking for reverb that does new things, that isn't just good but different and textural and interesting in and of itself.

In that respect I've been very happy with Swells, and am planning to use it a bunch after this. Swells can play it straight, but the combination of self-generated modulation and great colouration options means Swells can draw attention, add unique character, and fill a role more than simply adding space. I've particularly liked pairing it with Jellymix, using Swells as a send and then using varying amounts of wet/dry across multiple instruments, creating a shared reverb environment that feels pretty glued. It's a great combo.

So do you need another reverb? Probably not. You don't need anything in hardware, honestly. But if you're looking for a hardware reverb that makes you think differently about time-based effects, and if you're looking for a reverb that sounds good in new ways, I think Swells is worth checking out.

Thanks for listening.

https://jayhosking.bandcamp.com"

Shakmat Modular masterclass | 25 March 2026

video upload by Signal Sounds

"For our first in-store event of 2026, we played host to our friends from Belgian Eurorack brand Shakmat Modular. Shakmat’s Francois showcased their modules - including the forthcoming Ballista Blast synth voice and Lancer’s Lash snare drum - in a unique live performance, before breaking down the patch and discussing the workflow. It’s full of invaluable tips for anyone performing live with modular synths!

Buy Shakmat modules at Signal Sounds:
https://www.signalsounds.com/shakmat-...

More info:
https://shakmat.com/

Chapters:
00:00 Intro & live performance
10:39 Case walkthrough & module demos
45:25: Audience Q&A"

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.

Melancholia — 6 BPM Ambient Meditation (Typhon + Parting)

video upload by The Pedalboard Orchestra

"Melancholia is a slow and meditative ambient journey built around an extremely reduced 6 BPM sequence. Subtle modulations, evolving textures and deep reverbs create a drifting, almost timeless atmosphere. Use headphones for full stereo immersion and take your time.

Created with the Dreadbox Typhon and a small chain of ambient effects.

Signal chain (stereo):
Typhon → Chase Bliss Lossy → OBNE Black Fountain Stereo → Chase Bliss Mood Mk II → OBNE Parting (Purr-Ting) → AC Noises Ricorda

If this resonates with you, feel free to subscribe for more ambient explorations.

🎥 All sounds and visuals by The Pedalboard Orchestra
🔊 Recording & mastering by The Pedalboard Orchestra
⚠️ This is not a sponsored video — all equipment was personally purchased

🎧 Listen to my music on Bandcamp:
👉 https://thepedalboardorchestra.bandca...

Get newest updates for my music on Instagram:
👉 / the_pedalboard_orchestra"

The Crow Hill Company Introduces the THE SH*T SYNTH

The Sh*t Synth - Walkthrough video upload by CROW HILL XTRAS

Press release follows:


The Crow Hill Company turns to extensive and rare collection to turn out THE SH*T SYNTH as compendium of 48 circuit-, wave- and sample-bent instruments

EDINBURGH, UK: The Crow Hill Company is proud to turn to its own extensive and rare collection of hardware to turn out THE SH*T SYNTH — available as a compendium of 48 circuit-, wave- and sample-bent instruments inspired by some of the Edinburgh-based enterprise’s eclectic musical favourites (spanning the likes of Aphex Twin, Boards Of Canada, Joe Maus, Jon Brion, Laurie Spiegel, Radiohead, Throbbing Gristle, and Yazoo) to create something that they collectively ask: is it just shit or ‘the shit’? — as of April 7…

Whatever way anyone chooses to read into the titling of THE SH*T SYNTH as the latest entry into The Crow Hill’s ongoing ORIGINS series of sample-based virtual instrument plug-ins, one thing is for sure: it readily represents a broad selection of three categories of 16 workhorse instruments each, effectively wrapped up into a single plug-in designed to bring a cohesive approach to making music more edgy, lo-fi, retro, and — swimming against the technological tide of so-called progress — decidedly AI (Artificial Intelligence) slop-free. From pianos to strings, plucks, beeps, bass, and pads, the compendium that is THE SH*T SYNTH has been lovingly sculpted by the Edinburgh-based enterprise’s media composer and ‘samplist-in-residence’ Christian Henson to take the hassle out of making existing sounds less refined, catering to those looking for an entirely new bank of Mellotron-style sounds as well as synths that have been long forgotten — for good reason, too!

CLICK FOR MORE »

Get lost in Sound Effects with Nyquist Nightmare

video upload by Robots Are Red

"Nyquist Nightmare by Modular 4 the Masses
12hp Wacky FM Synthesizer designed to emulate the sounds of scanning radio frequencies and more!"

Modular for the Masses

Nyquist Nightmare

Audio Mangling Modulator/Demodulator

This module is a modulator/demodulator. The top four knobs interact with each other to take a signal and mangle it beyond all recognition, or if you're patient and lucky, let the signal come through mostly unchanged.

What is going on there? you ask. The input is used to frequency-modulate a VCO that can oscillate beyond anybody's hearing range. The resulting (possibly ultrasonic) signal frequency-modulates a second identical VCO. This leads to the kind of signal degradation you might expect from an AM radio transmission. Or a short wave signal fighting its way through a hurricane.

The rest of the knobs control filtering; high-pass to remove the truly ground-shaking rumbles the top for knobs can generate, and resonant low-pass to get the harsh high pitches out of the signal, and emphasize (for example) the frequency range of human speech, if you want to pass old movie dialogue through this.

Also included are a wet/dry control (while prototyping this module I would sometimes spend minutes looking for the perfect knob settings to allow a signal through just to realize the signal source had stopped playing), a CV input for the low-pass filter with an attenuator knob, and a effect volume knob.

Some fun things to try:

with zero input, try to get a modem sound!
connect a simple waveform and massage the top four knobs to fold the wave in surprising ways
David Lynch. Put David Lynch through this.
turn the resonance of the low-pass VCF up and use this as a VCO (not 1V/oct, I'm afraid
Turn both "Carrier" knobs all the way down, so the VCOs are stalled, and listen to the signal bash its way through

http://hivemindsynthesis.com/m4tm

Using Step 8 with Nibbler and Maths to generate rhythms

video upload by Peter Plugs Patches

"Using patterns from the Schlappi Nibbler to control the current stage of the Joranalogue Step 8, with the Make Noise Math attenuating and offsetting the cv signal to create variations. Sounds are coming from Quad Drum, SSF Entity Ultraperc, Mutable Instruments Plaits, Winter Modular Zaps and Basimilus Iteritas Alter.

#eurorack #schlappi #modularsynthesizer #modular #makenoise #joranalogue #quaddrum #ultraperc #steadystatefate"

Peter Plugs made the Web Based Online Editor for the Original Nord Modular posted above.

New module! Dual Retro Vco

video upload by Radical Frequencies Modular

"Listen the new Radical Frequencies Dual Retro VCO playing an arpeggio , showing all waveforms and making Pulse with modulation and Hard Sync between the vcos . It goes through the RF Mixer and then to Diode Dream Vcf as it suits this oscillator perfectly! #eurorack #modularsynth #radicalfrequenciesmodular #dualretrovco #drvco #diodedreamvcf #analogsynth"

"Handmade Dual VCO of discrete core capable of internal FM cross modulations - Hard sync and Ring Modulator

• Analog discrete saw core oscillators with Saw, Pulse, Triangle and Ring Modulation wave outputs.The sound is warm and fat, emphasizing odd harmonics for this big retro sound. My purpose here is to approach the sound of classic synths from 70s, that we all loved.
• The SAW wave produces rich bass frequencies, sweet mids and smooth highs but overall, it is still well balanced across the full frequency range. The Triangle wave is almost perfect in shape with no buzzy hum sound. The pulse wave can produce that chorus-like phasing effect, when using an LFO to modulate the PWM input and does so in a very unique way, as it changes the phase of the signal as well.
• Two identical VCOs : VCO ALPHA and VCO BETA, with the ability of hard sync as each VCO syncs internally with the other. Using the attenuator knob for SYNC, you can go from zero to soft sync(11-12 o’clock) to hard sync when the knob is fully CW. For syncing you just need to turn CW, the sync knob of the VCO you want to be the slave. Don’t open both the sync knobs at the same time unless you want to make some weird sounds.
• There are external sync inputs for each VCO as well. External oscillators can be used as masters, just feed the output of the oscillator of your preference, into the sync input or either ALPHA or BETA. Just remember to feed a saw or a square wave, into the SYNC input. This is very important in order to sync the oscillator. A ramp wave it will not sync at all! (The RF DPVCO for example is a ramp out VCO and if you want to use it as master you must invert the signal first.)
• Both ALPHA and BETA track 5 octaves accurately, tempco resistors are attached to the tuning ICs CA3046 on both VCOs.
Separate voltage regulators for each oscillator can achieve the best sounding results without drift or bleed pitch, between VCOs.
• Both VCOs go from a relative fast LFO range with the coarse tuning knob fully CCW, up to high frequency oscillation.
• Octave Switches of 3 positions: 1 octave down - , zero , 1 octave up +, are available and make patching, fast and intuitive.
• There are internal normalisations for exponential as well as linear FM and both have independent EXP FM and LIN FM, attenuators.
• You can select the wave for the internal FM buss via the front panel switches .Options are Triangle and SAW. The internal FM wave, is independent per VCO as well.
• There are also internal normalisations for PWM, where each VCO modulates the pulse width, of the other and both use the triangle waveform.
• There is a PW offset, per VCO - negative phase pulse width at CCW to + positive phase at CW and 50-50 duty cycle square wave, in the middle of the knob.
• Ring Modulation section is a separate feature where X and Y inputs are internally connected with the VCOs as well. It has 2 inputs, X and Ψ and one out, RM. The inputs are internally connected to the internal FM buss switch of triangle - saw selector.
VCO ALPHA is internally connected into Ψ input and VCO BETA, into X input. You can feed the RM inputs any wave you desire from other VCOs as well .
• An external patch cable breaks the normalisation of all internal connections, via input jacks. (EXP FM, LIN FM, PWM, SYNC, X Ψ)

• Important note about tuning : The vcos need at least 30 minutes warm up before using it for good tracking. Also when you have to tune the vcos it’s better the octave switches to be in the middle position and all the fm and sync knobs must be closed (CCW)

• Large range of sounds with countless sweet spots - ultra stable tuning for FM sounds by using the FM and SYNC knobs simultaneously - fat basses, classic leads and drones. Feed the DRVCO into a good filter and you will enjoy it as it was meant to be! The VCF that I suggest is the RF Diode Dream VCF as it is a ladder filter and suits it perfectly! Of course any other filter of your taste can be used with great results."

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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Exploring unique FX with synthesisers, modular & more // TRAILS from Poly Effects [PEDALS & PATCHES]

video upload by DivKid

"Join us for an exploration of TRAILS as part of our Pedals & Patches series of videos, exploring pedal FX with modular gear, synthesizers, around the studio and with some other instruments too. Pedals aren't just for guitarists, so lets get creative with them!

Trails offers 7 FX that make your sounds sustain and grow, there's resonators (think Rings) with sympathetic strings, bell like chord generation, live and frozen buffer granular processing, a unique distortion like nothing I've used before, micro loopers, pitch shifting delays, vinyl record emulating delays and more!"

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ELEKTRON DIGITONE MKII FM SYNTHESIZER SEQUENCER GROOVEBOX

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

via this listing

Additional Signal Sounds listings

"We say...
A pre-owned Elektron Digitone MKII in excellent condition. It comes with all original packaging and accessories.

Manufacturer's description
Step into a new realm of sound with the Digitone II, an evolution of Elektron’s original FM synthesiser, now offering expanded polyphony and enhanced creative control. With 16 tracks (versus the original’s 8) and a flexible 16-voice polyphony, you can unleash complex soundscapes across synth or MIDI tracks. Digitone II introduces four selectable synth machines (Wavetone, Swarmer, FM Tone, and FM Drum) and six dynamic filter machines, providing far more sonic variety than its predecessor. The improved 128-step sequencer, along with Euclidean sequencing and advanced modulation options, invites you to explore limitless creative possibilities. Packed with powerful effects, deeper sound-shaping tools, and a modular workflow.

Expanded Polyphony and Synth Machines:
While the original Digitone offered 8 voices and 4 synth tracks, the Digitone II doubles the polyphony to 16 voices and expands the tracks to 16, allowing for far more layered compositions. In addition, the four new synthesis machines (Wavetone, Swarmer, FM Tone, FM Drum) go beyond standard FM synthesis, offering greater creative potential for crafting rich melodic, rhythmic, and percussive sounds.

Enhanced Sequencing and Performance Features:
Digitone II features a 128-step sequencer—twice the length of the original Digitone's—enabling more complex patterns and compositions. The addition of Euclidean mode per track offers a fresh approach to sequencing, making it easier to generate evolving rhythms. With individual pattern length, time scale multipliers, and enhanced trig conditions, the Digitone II’s sequencing features are a leap forward from the original, giving you deeper control over your compositions.

Advanced Modulation and Effects:
The Digitone II builds on its predecessor’s modulation and effects capabilities, with three assignable LFOs per voice (up from two in the original) and added effects like digital overdrive, bit reduction, and sample rate reduction per voice. The inclusion of master effects like the stereo compressor and overdrive means you can fine-tune your final mix, while send effects like Saturator Delay and Supervoid Reverb add depth and dimension to your sounds."

Processing Synths, Drums, and Vocals w/ The Herbs & Stones Soft Memo

video upload by Duskmos

"In this Signal Colors episode, I'm taking a much closer look at the Herbs & Stones Soft Memo - a semi-modular stereo patchable effects workstation that can help craft some WILD sounds. Hang out while I check it out with a stereo synth (OP-1F), vocals (TP-7), and a mono synth (Critter & Guitari Pocket Piano MIDI).

Soft Memo Manual: https://herbs---stones.com/wp-content..."

00:00 Intro
01:02 Layout and Control Overview
08:30 All Algorithms w/ OP-1F
01:03:17 On Vocals w/ TP-7
01:14:49 On Mono Sources w/ Pocket Piano
01:21:24 Final Thoughts

Signal Flow Podcast Ep2: Our favourite sequencers, under-the-radar modules & more

video upload by Signal Sounds

Chapters:
00:00 Intro
03:37 News roundup
07:13 Favourite sequencers
23:21 Under-the-radar modules
32:32 Current trends in Eurorack

"In this episode, Tom and Luke discuss their favourite sequencers, share some favourite under-the-radar brands and modules, and chat about some of the current trends in Eurorack, from multi-algorithmic digital powerhouses to manufacturer-specific ecosystems.

Thanks to everyone who commented on episode one! You can get in touch with questions, feedback and suggestions via signalflow@signalsounds.com

Some of the gear discussed:
https://signalsounds.com/xaoc-devices...
https://www.signalsounds.com/dannysou...
https://www.signalsounds.com/new-syst...
https://www.signalsounds.com/make-noi...
https://www.signalsounds.com/noise-en...
https://www.signalsounds.com/making-s...
https://signalsounds.com/fancyyyyy-sy...
https://alteredstatemachines.net/aris..."

The Unperson’s Rings video:

Mutable Instruments Rings is still one of the BEST modules!!

video upload by The Unperson

"Rings by Mutable Instruments is one of the few modules on my 'Never Sell' list. It will always be fun, always sound good, and always have new sounds to discover, and that is the sign of a very well designed module. Join me for 20 minutes of sound and discovery!

Please consider supporting my channel by checking out my patreon: / theunperson

#rings #mutableinstruments #eurorack

0:00 - Intro
1:35 - Overview
3:16 - Drone
7:23 - FM Synthesis!
11:51 - External Audio In
15:02 - Hidden Mode Overview
16:48 - Final Jam!"