"Totem is a multimode voltage controlled filter with 16 different filter modes based on the 3109 OTA chip used in classic synths like the Roland SH-101, MC-202, Jupiter-8 and others. $129 USD, Fall 2025
Features:
Massive drive control for endless tone variety CV control via attenuator CV control via attenuverter V/OCT control with half and negative half scaling Filter Modes:
"The ARKARION is a complete analog synthesizer voice, housed in a Eurorack module, with digitally controlled signal routing. It combines the tactile experience of analog patching with the generative potential of randomized patches, all controlled via a single button or external gate signal.
Inspired by a fictional "DNA synthesis" concept, the ARKARION interprets a virtual genetic code to define routing schemes for CV and audio. This allows complex, evolving sound design with minimal patching.
This synthesizer is designed for users seeking a unique blend of structure and chaos, combining traditional subtractive synthesis elements with a digitally modulated signal flow. Whether played from a MIDI source, sequencer, or by hand, the ARKARION delivers a wide range of timbres, from tightly controlled tones to wild and unpredictable textures.
"Control your eurorack system with just a touch. Generate control voltages and gates from the capacitive touch pads and route them to play your system.
Some things just can’t be sequenced……
The module has two touchpads, one to generate CV outputs and the other for gates. There are separate outputs for the pressure CV, velocity CV and Gate.
The pressure touchpad has been designed to be expressive. The pressure CV is proportional to how hard you press the panel, contact surface area and position.
The increasing separation of lines in the pressure touchpad result in an inverse relationship to its response so that depending upon where you touch you will get a sensitivity.
The top of the touchpad is more sensitive. The sensitivity decreases going down the panel.
Using just the tip of your finger the output CV can be controlled by slide it up and down the panel.
The RGB LED in the top left displays the level of each output.
Green = Pressure Blue = Velocity Red = Gate The pressure CV output ranges from 0-6V
The module has been fitted with an offset null trimmer which can be adjusted when the module is mounted in your rack to set the Pressure CV back to exactly 0V.
The offset null can be adjusted through the panel with a small flat head screw driver.
Chapters:
0:00 - Intro
0:52 - Setting up a Multitrack Recording
3:28 - Recording
5:09 - Transferring Stems to a Computer
7:07 - Mixing and Editing
7:38 - Final Mix
8:01 - Outro
"The 'Stem Ripper' is a compact 8 channel audio recorder designed for immediate full patch recording without the need for external hardware. Capture all audio stems of a patch with ease.
In this video we multitrack a basic patch using the Stem Ripper then copy the stems to a computer for basic mixing and editing in Logic Pro.
Patch stems are recorded directly to a micro SD card which can then be easily transferred to a computer to mix, edit or archive patches. Each input is recorded as an individual track in a 16bit 44.1kHz multichannel date stamped WAV file. Record time is limited only by SD Card size. Two additional tracks within the output WAV contain a configurable stereo mix down of the inputs. The module has large 20Vpp per input headroom with LED clip indication if exceeded.
An optional 2HP 'Thru' output expander duplicates the 8 inputs to a row of unbuffered outputs, eliminating the potential need for stacking patch cables at the expense of more case real estate.
A suitable 64Gb SD card is included with the unit."
"Deuxd (DUDE) is a dual filter that encourages stereo audio-rate modulation, experimentation and can easily be configured in number of ways.
• 2 Completely Independent LP/HP VCFs • True stereo VCF with global cutoff control + offset per channel • Mono to stereo signal processor • Stereo to mono signal processor • Variable width bandpass filter with dual resonant peaks • Freaky feedback machine with 2 flavors of overdrive and FM • Stereo pingable-thing • Dual FM Oscillator / Drone
Audio Input 1 (left side) is normalled to Audio input 2 (right side). This let's you easily process 1 signal with two separate filters. Audio 1 is also normalled to FM input 2. To break either connection, simply patch a cable into the respective input jacks. Similarly, Audio input 2 is normalled to FM input 1. This means that each signal input is ready to frequency modulation the opposite side's filter cutoff. (pre XFM)
The top Frequency controls (top right and top left) act as the primary cutoff for each side's filler. Use the global Cutoff (large knob top center) to offset the position of both filter's cutoff position at the same time. The global cutoff control can be used in one of two modes: SYNC - This will change the filter's cutoff of both sides in parallel with one another. OPPOSE: when switched to Oppose, the right side filter will receive inverted control voltage from both the large cutoff knob and signal patched into the Cutoff jack.
When using the Sum (mono) output, you can switch between two flavors of diode clipping (Dirty and Filthy) :)
For bandpass operation, switch one side to High-pass and the other side to Lowpass (results change depending on which side is LP/HP) patch a signal into either filter's audio input, then patch the output the starting filter to the input of the other filter. You can now pull your audio from either the 2nd filter’s output or the SUM output for added harmonics.
The X-mod knob is hardwired, this circuit isolates the output from each side, sends one signal to the cutoff of the opposite side, and visa versa. (post XFM)
For dual pinging fun, patch a slow moving square wave into the audio inputs. the resonance controls should be at about 10:00, just before self oscillation. You will get different results depending on how the internal FM circuits are set. also experiment with pinging while in dual resonant peak bandpass config."
SYNTH-WERK introdcued the BODE Barberpole Phaser in rackmount format back in 2024, additional posts including demos here. It is now available as a 5U module.
"The BODE Barberpole Phaser, now available as 5U Module for modular systems. Price 2.900 Euro plus tax"
"The BODE BARBERPOLE PHASER offers 9 phase stages and various sound manipulation features. The option to insert an additional effect into the feedback loop or one of the two audio pathes is one of them.
The main feature of the BPP/product is infinity phasing. Infinity phasing is a psychoacoustic effect based on the Shepard scale, which was introduced in 1964 by the psychologist Roger N. Shepard. It creates the illusion of an infinitely ascending or descending scale that never exceeds the limit of one‘s hearing.
The combination of the various features like left-right panning or the transfer of a monofonic input signal into a stereo output signal and modulation of the phaser creates a sonic soundstage in the tradition of Harald Bodes ”Klangumformer” principal. If you think you know the sound of a Phaser, you need to listen to the Barberpole Phaser to understand the possibilities of a 'Klangumformer'"
"GATED RANDOM outputs a random CV level and thru gate probability with every gate input.
The range of the CV output is adjustable between 0 and 10v.
The level of the CV output can be shifted with the SHIFT control or a CV or audio source. The SHIFT control can shift the random level completely to 0v: which sets the probability of a random level of happening from 0 to 100%.
The GATE in is always passed thru to one of two GATE outs with probability control that either follow the gate length or latch/unlatch with every gate to that output.
The SAMPLE input allows an external level to be sampled, replacing the internal noise circuit.
Quality all analog circuitry
LED display of the output gates
LED display of the output LEVEL at 0v and 5v
control over gate probability
control over base LEVEL voltage
control over LEVEL range"
"I got carried away checking out a couple of new modules from SCRAPCODE MODULAR: AXIOM and WONK. What started as a quick initial test and exploration, turned into this full 140bpm set with techno and psytrance vibes.
I'll play the set for a bit, then go over the entire rig, and explain what does what and how it all works together."
1. AXIOM - Euclidean Rhythm Generator - Product Overview
2. AXIOM - 9/8 Jam
3. AXIOM - Long Pattern
AXIOM is a Eurorack module based on the popular concept of the Euclidean Rhythm, where a defined number of HITS is evenly distributed throughout a sequence.
It allows two CV inputs for each if its four lanes – one for the number of HITS in each lane, and a second for either the number of STEPS in each sequence or for an OFFSET to its starting position.
Each sequence can be assigned a different length, causing the rhythms in each lane to move in and out of phase with one another. A pattern of up to 21,840 steps is possible before repeating if the right settings are chosen!*
An internal clock or external CV trigger can be used to progress the sequencer.
AXIOM is available as either a DIY Kit or as a fully assembled product.
For more information please visit www.scrapcode.co.uk
*Hint – use STEPS MODE and set the STEPS values to 13, 14, 15 and 16.
"An overview of the features of WONK by Scrapcode Modular."
00:00 Intro
00:17 Attack-Release Envelopes
00:38 Wonkification
01:21 Hold-Release Envelopes
01:53 Looping Mode
03:05 Jam with Axiom, Moog and 808
04:51 Outro
WONK is a four lane envelope generator with a twist!
Each lane shares the same Attack and Release controls, but these can be further modified by the Wonk parameter:
More Wonk will make the top envelopes longer and the bottom envelopes shorter.
Less Wonk will make the top envelopes shorter and the bottom envelopes longer.
WONK can run in Attack-Release, Hold-Release or Looping modes, and is available fully built or as a DIY kit.
Additional demos:
Ambient Filter Jam - Modular Eurorack Bleeps and Bloops using Doepfer Quad Poly Filter A-105-4
"A little ambient dawless jam exploring the Doepfer Quad Poly Filter (A-105-4) alongside modules from @scrapcodemodular, @behringer and @Dreadbox-synths.
00:00 0) Intro and overview
04:33 1) sequencer using ping
14:15 2) echo effect through tcpdump
13:00 3) helicopter sounds from tcpdump
14:05 4) link saturation by traffic amplification
16:20 5) terminal sounds through ssh
19:02 6) remote desktop forwarding xeyes
20:30 7) remote desktop forwarding browser
24:48 8) accidential drone synth from 2048.org
28:05 9) what google maps sounds like
30:13 10) listen to bitmap images in the browser
38:39 11) translate .wav samples to NSA's native format by a sigma delta upconverter"
what is it
the NSA selector is a eurorack module with two ethernet jacks and one audio output. any bit on the network will be sent to the audio output.
what it's not
this is not an "audio interface". we do not play back any "format" such as RTP or MP3 or WAV ot the like. the eurorack module does not "speak" any protocol. all traffic is forwarded from one network jack to the other unmodified. it's just tapped, intercepted to convert it to audio.
"Introducing MEMS Mic - a 2HP Microphone Module for Eurorack. Bring outside sounds into your system with a tiny omni mic component hidden behind the panel. Record, sample, process, or even use audio as a modulation source.
In this video we do a quick tour of MEMS Mic with some patch ideas to try."
"What’s MEMS?
MEMS Microphones are constructed with a Micro-Electro-Mechanical System (aka MEMS) component, placed on a printed circuit board and protected by a mechanical cover. They are extremely small, and can be found in many modern electronic devices e.g. phones, tablets, cameras etc. Despite their compact size, they have a very flat response across a large frequency range (~ 6hz to 20kHz.) which makes them excellent for musical applications."
"In this video, we take another look at UTF-8 SAMPLIFIED – the fully open-source 8-bit Eurorack drum module I released with ASCII Synth. It’s made its way into racks all over the world, and even into DIY workshops like the one run by mzourack at Noise Kitchen in Prague.
Now it’s getting even better:
Thanks to a pull request by community member poetaster, three new kits have been added: 808, Jungle, and Beatbox – plus a handy wav2c.py script that lets you convert your own samples into custom kits!
"In this video we are building a tiny - almost credit card sized - drum machine called UTF-9 SAMPLIFIED. It is based on the bleep drum. Check out my version on GitHub:
You might remember the stand alone version of OVUM from previous posts here. OVUM has now been ported to eurorack.
Press release follows:
Introducing OVUM for Eurorack - analog oscillator bank
August 6, 2025 - Crows Electromusic, a small synth company fromVancouver, Canada, is thrilled to introduce OVUM for Eurorack, a modular adaptation of our standalone synth OVUM. OVUM for Eurorack is a powerful, all-analog, drone and modulation source designed for exploratory sound synthesis, ambient, drone, and noise music. With five individually controllable and individually routable triangle-core oscillators, OVUM for Eurorack gives you a bank of raw material ready for use in your modular system - as droning dissonance, thick chords, or slow swelling modulation signals.
Features:
• 100% analog circuitry • Five triangle-core oscillators • Crossfade between triangle and square waves • Switch each oscillator to audio-rate or LFO rate • 4 individual outputs, normalled to 1 main output • One-control-per-function interface • 20hp, 3U eurorack standard • Handmade in Canada
OVUM for Eurorack is our third release, and our first Eurorack module.
It builds on what we’ve learned making standalone products; the palm-sized FM drone box Lore, and the original OVUM. The main challenge of adapting a standalone synth to modular is: how does this fit into a modular context? Five more oscillators is always useful, but with OVUM for Eurorack we’ve built something that can be more than that - an instrument with space available to interact with, either as the voice of your composition, or as the control center for your modulations. We hope OVUM for eurorack will be the place your hands go first when you’re performing a patch.
While it’s designed with ambient, experimental, noise and drone music in mind - we think OVUM for Eurorack is going to be at home in virtually any type of modular system.
OVUM for Eurorack is available now for $150 USD / $200 CAD.
Crows Electromusic is a small synth company based in Vancouver, Canada. Started by Cory Alder in 2023. Crows’ goal is to develop new hardware instruments that challenge the established ways we interact with sound and music creation. Their first product, OVUM, was released in 2023, and their second product, Lore, was released in early 2025.
For more information, please visit Crows’ website at https://crowselectromusic.com/ or follow us on social media (Instagram, Bluesky) at @crowselectromusic.
"Ready to explore a new kind of resonance?
HALOS is a physical modeling synthesizer by Behringer, designed to bring strings, membranes, and tubes to life — right inside your Eurorack.
🎧 From deep organic tones to shimmering, evolving harmonics, HALOS turns any trigger, envelope, or noise source into rich, expressive soundscapes.
🚀 Why HALOS?
• Inspired by Mutable Instruments RINGS*
• Three resonator modes: Modal, Sympathetic Strings, Non-linear/Dispersion
• Advanced physical modeling algorithms for strings, membranes, and tubes
• Pseudo-polyphony up to 4 notes
• High-resolution CV control with 16-bit accuracy
• Compact 14 HP format — ideal for modular rigs
✨ Perfect for experimental artists, Eurorack enthusiasts, and sound designers looking to add realism and depth to their modular system.
🎬 Watch the video. Redefine your resonance.
🎶 HALOS is here — and it’s alive."
"Some great sound atmospheres and effects created by our new NOISE BANK Eurorack module.
It features 150 types of noise, various trigger options, and pitch control."
"It's been ten years since I first heaved a Molten Music Monthly into the world. I've done it every month since and through thick and thin there's nothing I enjoy more. The summer is always a bit slow but I've pulled together some nice bits and bobs to mull over while applying sun cream or hiding in our synth caves.
This Monthly is sponsored by DF Audio who make fabulous modular and synth-friendly desktop patch bays:
https://dfaudio.com.au/"
Index - 0:00
DF Audio - 3:17
Sequential Take-5 and Oberheim TEO-5 Desktop Modules - 6:30
Shakmat Bishop's Miscellany Mk2 - 9:55
Arcane Devices Caress of Stars - 13:01
X Audio Systems XTRIKE - 14:15
Error Instruments Kharper - 17:01
Rob Papen WirePluck - 19:23
Signs Modular csf - 20:56
WORNG Electronics Quiver - 22:43
Pittsburgh Modular Local Florist 2, Double Helix and Crow 3 - 24:37
B:art Instruments b:efuddle - 27:12
Schlappi Boundary Layer - 28:23
Gig Performer Essentials - 29:38
Molten Synth Picnic Popup - 31:50
Coming up - 36:14
"I was doubtful whether sensors would be fun tools to create music with - beta-testing the Koma Elektronik Field Kit sensors taught me otherwise. They are ideal creative tools in that they make you think differently and far out of the box. Perfect for breaking writer's block or pure musical enjoyment."
Press release for the new Sensei module follows:
"Berlin-based synth makers KOMA Elektronik introduce Sensei, a new Eurorack module designed to connect your modular system with the world around you. Whether it's light, movement, heat, or touch, Sensei lets you patch your environment. "Originally based on the Sensor Interface from the KOMA Field Kit, Sensei is a standalone Eurorack module built for artists, experimental musicians, and installation creators who want to go „beyond the knob“. Two sensor inputs (one for continuous signals, one for triggers and switches) allow for expressive, non-traditional control over CV and gate signals. From subtle environmental fluctuations like heat or wind to pulsing club energy fired by strobe lights, Sensei makes your surroundings part of the music.
Users can choose from KOMA's established lineup of Field Kit Sensors currently available:
- Light - Temperature - Sound - Touch - Movement (Accelerometer) - A Micro Sequencer with three modes - Softpotentiometer - Ball Switch - Button / Jack Input or plug in their own Arduino / DIY sensors with standard three-pin connectors. And even without sensors, Sensei offers creative functionality: it doubles as a re-triggerable saw/triangle envelope, voltage processor with gain and offset, or a simple CV source. Key features:
2 sensor channels: one continuous, one switch/gate style Built-in analog processing (offset & gain) Re-triggerable envelope mode (saw & inverse saw, gate & inverse gate) Works with KOMA and standard 3-pin sensors Perfect for installations, generative patches & sound experiments
With Sensei, modular becomes tactile, responsive, and alive. Your modular just grew a few more senses! KOMA is currently running an introductory sale on their Sensors that you should grab if you are interested! Product page and more info: https://koma-elektronik.com/new/product/sensei MSRP: €169,- Available now through KOMA Elektronik and selected dealers."
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.
"The CS-80 is renowned for its rich, expressive sound, and its filters play a crucial role in that. Here are the key characteristics of the CS-80's filters:
Dual Filter Design Per Voice
This is a standout feature. Each of the CS-80's eight voices boasts two independent filters:
1. High-Pass Filter (HPF): With adjustable cutoff frequency and resonance.
2.Low-Pass Filter (LPF): Also with adjustable cutoff frequency and resonance.
These two filters can be used simultaneously, enabling unique band-pass effects and exceptionally flexible sound shaping. The cascading of these filters results in a very characteristic, mid-range-focused sound."
"Checking out Servo, a unique new module from ADDAC Systems. It can turn knobs or trim pots on a modular, synth, pedal, mixer, or anything else that’s small and cylindrical and that lacks a cv input. Perfect for when your hands are busy doing other things, or for when you want slow LFO-style modulation, or for when you want super precise stepped adjustments.
"At ADDAC we always admired the geniality of Neil Young’s Whizzer, way ahead of it’s time, a great example how great ingenuity and engineering can come together to make something great. Inspired by it’s motor controlled method we created a 4HP solution to control any knob that doesn’t have a CV input, while also possible to use for other gear as well (within certain distance constraints).
We use a Servo motor which is a specific type of motor that can be digitally controlled to go to a precise angle. This motor is controlled by a microcontroller that also receives an incoming CV voltage from 0 to +5v and lineary converts this voltage range to the 270 degree Servo motor range.
Using a spring wire and metal couplers the motor shaft is then attached to the target knob to be controlled which will turn as the Servo turns. Two other knobs [MAXIMUM ANGLE] & [MINIMUM ANGLE] further allow to control the “sweet spot” of the target knob, setting a smaller Servo range.
Raising the [MIN ANGLE] knob above the [MAX ANGLE] knob inverts the Servo range.
We can't stress enough how important it is to read the whole User's Guide thoroughly for this one!
Note: All specifications and features are subject to change without previous notice."
