Djupviks Spektrum // What is a 'Switch Capacitor Filter'?

video upload by Lesjamusic

"🎛️ Djupviks Spektrum: The Filter That Clocks Itself 🎛️

Spektrum isn’t just another Eurorack filter. It’s a switched capacitor stereo filter that uses your input signal as its clock, turning audio into rhythmic glitches, stutters, and pulsing textures you won’t find anywhere else.

In this video, we break down:
✅ What a switched capacitor filter actually is (in plain English)
✅ How Spektrum turns your audio into patterns and sequences
✅ The unique stereo behavior and control layout
✅ Patch examples to unleash Spektrum’s chaotic beauty

Spektrum reacts to everything you feed it — arpeggios become glitchy basslines, noise turns into crunchy percussion, and waveforms transform into evolving rhythmic patterns.

If you’re looking to add a truly unique, reactive, and chaotic filter to your rack, Spektrum might just be the perfect machine.

Spektrum is available to buy as a kit from Thonk in the UK and Europe, SynthCube and Modular Addict in the US. SynthCube will be stocking some pre-built versions soon too.

00:00 - Intro
01:54 - Walkthrough
08:32 - Stereo patch
11:48 - Drone patch
14:51 - Deep modulation patch
18:51 - Chords patch
20:33 - Chord patch extra
21:56 - Final thoughts & ambient patch"

LiveStream Synth Explorations : Esu's Trifecta by Ali Modular

video upload by Ken Flux Pierce Fluxwithit

"In beta now , so this is pre-release firmware. Just exploring it and having some fun with its triple effects layout.

0:00 - intro , modular audio is not direct
14:00 - audio gets fixed up. direct modular. bask in the glory
44:36 musical demo with Hydrasynth through Esu's Trifecta"

via Ali Modular

"The power of Esu

🔹 Craft your custom FX chain Run any 3 stereo effects per preset—your choice, your order. Choose from 20+ high-quality FX: reverbs, delays, filters, dynamics, modulation, pitch, and more.
🎚️ Hands-on control 4 knobs × 2 modes = 8 parameters per effect. Fast navigation + performance-focused shortcuts keep you locked in flow.
🔁 Modulate everything 8 assignable CV inputs = full control over all 24 parameters across your FX chain. Or use CV to switch presets in real-time—perfect for the stage.
🕒 Clock + Duck Inputs Keep your time-based FX in sync with your system clock. Add rhythmic punch or sidechain-style dynamics using the Duck input.
🎵 Studio-grade sound. Live-ready design. Whether you’re mangling soundscapes or dialing in polished finesse, Esu’s Trifecta adapts to your vibe, your workflow, and your vision.
Effects

Dynamics & Distortion

Compressor • Distortion • CrushTone
Filters & EQ

Ladder Filter • Filter Sweeper • EQ
Modulation

Auto Pan • Chorus • Flanger • Phaser • Pitch Shifter • Tremolo • Ring Mod
Delays

Delay Designer • Tape Delay • Dub Delay • Ping Pong Delay • Reverse Delay • Professor X Delay
Reverbs

Esu's verb • Esu's Shimmer • Storm Verb • Shimmer Storm
About Ali Modular

Ali Modular builds creative, performance-ready audio tools for artists who want control, power, and flexibility in their rack."

Mnemonic Devices MD-003 MIKADO - Lorenz Chaos Preview

video upload by mnemonic devices

MD-003 MIKADO - Lorenz Chaos Preview. This is the sound of piano controlled with chaos waveforms; generating trigger events via derived velocity, pitch from the x-component and velocity from the z-component.

This is a late stage prototype and what you see may deviate from the final release ✨✨"

This one was spotted and sent in via Meska.

Mnemonic Devices MD-004 Tonic

video upload by mnemonic devices

"Announcing MD-004 Tonic, a 4HP expansion module for MD-001 Juniper that provides an octave keyboard and performative transposition controls. Tonic unlocks Junipers quantization potential. Sign up to our mailing list at www.mnemonicdevices.io to get early access."

Mnemonic Devices MD-001 Juniper


Playlist:

1. MD-001 Juniper - Preview from 2022

Juniper is an 8 channel clocked LFO and cross modulator, allowing for complex waveform generation through a powerful internal modulation matrix.

Juniper allows for the modulation of all parameters of a channels waveform generation, including Amplitude, Offset, Frequency, Width / Morph and more, resulting in mind bending complex waveform generation.

https://www.mnemonicdevices.io/

2. MD-001 Juniper - Recorders from 2022

A demonstration of the recording feature of MD-001 Juniper, which features 8 separate channel recorders enabling recording of waveforms and external CV. More information at www.mnemonicdevices.io

Patch details:
Juniper Outputs 1, 2 and 3 feed into the Rings Strum, Dampen and V/oct inputs respectively.

3. MD-001 Juniper - Sample and Hold from 2022

A demonstration of the Sample and Hold feature of MD-001 Juniper. The Sample and Hold can be triggered by any of the internal channels, or the external inputs, and the threshold can be fine tuned. There are 8 Sample and Hold units, one for each of Junipers output channels. More information at www.mnemonicdevices.io

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

video upload by Pittsburgh Modular Synthesizers

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

https://pittsburghmodular.com/

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

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

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

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

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

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

nonlinearcircuits IMMIX 1 | googoomux 1 | demux phaser 1 | path filter 1

video upload by cirtcele

"SSI2190 based VCA/mixer with inverting and non-inverting inputs"

googoomux 1

video upload by cirtcele

"DG408 based mux / demux; either feed one input and route to 8 outputs or 8 inputs routed to one output"

demux phaser 1

video upload by cirtcele

"gate controlled pahser"

path filter 1

video upload by cirtcele

"Unusual path filter, somewhere between a phaser and switching filter."

Introducing Mörser: Djupviks’ Stereo WASP Filter with Digital Noise // Part 1

video upload by Lesjamusic

"Part 1 of a 2 part series introducing the Mörser filter from ​⁠​⁠​⁠‪@vikingsade‬ Djupviks Elektronik.

Mörser takes the wildest analogue synth filter from the the EDP Wasp, and dials up the noise, grit and chaos to 11. In stereo.

Mörser is a stereo filter with low pass, band pass, independent resonance and shared cutoff (and CV). There’s distortion outputs for some extra gnarl, and a clocks digital noise source, hardwired to both the inputs and the CV.

This video explores the basic sounds and functions paired with an analogue VCO. I’ll share a video next week with some more creative patching and different sound sources."

Unknown Devices Eisei - Quad satellite processor | Available for Preorder

video upload by Unknown Devices

Playlist:
1. Eisei - Quad Satellite Processor - Preorder Now!
2. Unknown Devices Eisei - Demo 01 [from one year ago]
3. Making music from space | Unknown Devices Eisei Devlog 01 [from one year ago]


via Unknown Devices

Eisei is our take on spectral processing and polyphonic voicing for eurorack format. It is packed with really unique features, focused on complex timbre shaping and entangled harmonic rhythms, knit upon a smart and playful orbit based UI.

Eisei can filter, process, harmonize, shape and resynthesize anything coming across. Its core are 4 satellites, each equipped with a 20 bands filterbank, a pulse wave oscillator and dedicated IN & OUT.

Eisei is up for preorder now.

For more info visit https://unwn.dev/shop/modules/eisei/

Preorder ends July 8th.

———
SPECS

Dimensions
height – 3U
width – 18HP
depth – 18mm

Connectivity
6x CV inputs
3x trig/gate inputs
3x audio inputs
1x REC input

4x audio outputs
1x audio sum out
i2c port

Features
Unique UI
Datum sampling™
8x spectral presets (datum)
4x 20 bands filterbanks
4x internal oscs
4x Warp modifiers
based on esp32 + daisy 2
127x127px monochrome OLED display
48khz 16bit audio

———

Company
Unknown Devices was founded by Ciro Caputo in 2020 and has ever since
released 2 eurorack modules Sawari (preamp/EF/eq/contact mic/drive) and
Raiju (Envelope/LPG + internal voice). UNWN puts its focus in developing
engaging UI and combining different features into innovative
instruments.

Introducing Boundary Layer by Schlappi Engineering

video upload by SCHLAPPI ENGINEERING

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

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

Check with dealers on the right for availability.

8 Patches with Boundary Layer by Schlappi Engineering

video upload by Stazma

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

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

Have fun!"

Schlappi Engineering BOUNDARY LAYER / triple function generator / extensive playthrough

video upload by BRiES

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

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



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

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

Features

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

Check with dealers on the right for availability.

Expanding Intellijel Atlantix - featuring the Atlx 1U Expander

video upload by Intellijel

"While Atlantix sounds fantastic as a standalone synth voice, there are numerous ways to expand its potential with other modules. We've put together a few patches that add new elements to Atlantix, also featuring Atlx 1U expander module."

Patches:
00:00 - Intro: Atlantix Sounds
00:35 - 1. More Envelopes feat. Tangrams
02:30 - 2. Ringmod feat. Atlx Expander
04:32 - 3. Filter Mixing feat. Amps
06:16 - 4. Chords feat. VCO 1U
07:47 - 5. Wavefolding feat. Bifold

Check with dealers on the right on availability.

Beyond the Knob: Infrared Gesture in Electronic Performance [LUMIN - SYNSO] 星际飞船指挥家

video upload by Sonic Seed

"Enhance your modular performance with new gesture controls using infrared technology, making your show more dynamic and visually engaging

SYNSO is a modular synthesizer brand from Hangzhou, China, specializing in the design and development of digital-based modular synthesizers with innovative and unique interaction methods.

Order now: https://sonic-seed.com/products/lumin...

SYNSO's design philosophy emphasizes digital and parametric thinking to simplify the interaction logic of traditional modules.

6HP

Contactless Interactive CV Generator"

Module X – A Modular Synthesizer based on Sunvox

video upload by Marco Antonio Müller Lopez

"Module X is an extremely flexible modular synthesizer with an interface that adapts to a wide range of needs. The system is powered by a Raspberry Pi, an Arduino Due, and a 192 kHz audio interface from Pisound. It uses the open-source software SunVox for sound synthesis. With SunVox, users can create any number of virtual synthesizer and effect modules, making the sonic possibilities virtually limitless."

6HP OF OSCILLATOR GOODNESS | TEIA Synthesizers RipWave

video upload by DANIELE

This is RipWave by TEIA Synthesizers, a compact 6HP analog VCO designed for rich sonic exploration in a small footprint!"

0:00 Intro
0:37 Transform and sine output
1:05 Triangle output
1:35 Saw output
1:07 LFO Out
1:59 Octave switch and LFO
2:17 Square output
2:37 Layering outputs and stereo VCO
2:52 Triangle + Saw
3:06 Sine + Saw
3:37 Sine + Triangle
4:06 Square + Triangle
4:43 Square + Saw
5:26 Square + Sine
5:44 Linear FM

RipWave is a compact 6HP Analog VCO designed for rich sonic exploration in a small footprint. At the heart of its design is the Transform knob: a unique, voltage-controllable parameter that shapes the character of each waveform. It offers a wide range of timbral variation, from saturation to wavefolding, harmonic morphing, and pulse width modulation, all in a single control.

Features:

Four classic waveforms: sine, triangle, saw, and pulse.
Unique Transform knob shapes each waveform differently.
Voltage-controllable Transform with dedicated CV input.
Octave switch.
LFO mode.
Linear FM input.
Triangle core.
Modern temperature and tuning stability.

Specs:

Width: 6HP
Depth: 45mm
Power consumption: 90mA +12 / 80mA -12
Eurorack Format
Doepfer power connection

Price: 195€

Shadows of Saturn Dual / Paraphonic VCO From Recovery Effects

video upload by recoverysounds

"Shadows of Saturn is a dual oscillator module with a paraphonic twist. Each oscillator can operate independently or together using a single CV source. This allows for intuitive interval tuning, perfect fifths, octaves, subtle detuning, and more, unlocking rich melodic textures and sound design possibilities.

Each channel offers four selectable waveforms (triangle, saw, sine, and square), navigated via a dedicated scroll button. It is housed in a compact 10HP format ideal for space-conscious Eurorack systems.

Whether you need a reliable pair of oscillators or are venturing into paraphonic synthesis with individual outputs, Shadows of Saturn brings flexibility, depth, and character to any modular setup.

Designed and assembled in Seattle, Washington. Includes a one-year limited warranty if registered within 30 days of delivery.

Features:
Four waveforms per oscillator: triangle, saw, sine, square
Independent or paraphonic operation with dual outputs
Bipolar signal operation
Frequency range: 20Hz – 20kHz
1V / octave tracking"

6/14/25 (abhorrent) Roland System 100m + Metasonix R-54 + Zerosum Inertia Horripilation + (…)

video upload by Cfpp0

This is the first post to feature the Zerosum Inertia Horripilation.

"6/14/25 (abhorrent) Roland System 100m + Metasonix R-54 + Zerosum Inertia Horripilation + Peavey 1300 + Alesis MIDIVERB II

Some sludgy Sample & Hold. Pamela’s New Workout clocks the Roland System 100m 150 module’s S&H, which sends its clock out to the 140 envelope and its S&H out to both 110 VCOs, both 110 VCFs. The 140 envelope controls both 110 VCAs. The 150 LFO and the 140 LFO also modulate the VCFs on the two 110 modules. The upper 110 runs through the Zerosum Inertia Horripilation module, which is also modulated by the 150 S&H. The lower 110 runs through the Metasonix R-54, modulated by the 150 S&H signal. The R-54 runs through the Peavey 1300 and is panned center. The Horripilation signal is panned a bit left. Both signals receive some room reverb from the Alesis MIDIVERB II."

Synthetic Sound Labs - Geo-Grüvn and Lowpass Gate

video upload by NOISEBUG

"Two new releases from Synthetic Sound Labs that happen to play very well together. The SSL-1015 Lowpass Gate and, the Model 1655 - Geo-GrüVN
Add some Euclidean variation and snappy west coast percussive melodies to your 5U/MU systems. Head to noisebug for more info
#umodular #synth #modularsynth #synthesizer

https://www.noisebug.net/collections/..."

CLICK FOR MORE »

TRIX - 4 Channel Polyrhythmic Trigger Sequencer for Eurorack Synthesizer

video upload by NoisyFruitsLab

"Trix is a 4 channel, 32 steps trigger sequencer with individual step length, probability, swing, one knob filling methods per channel and 16 banks for saving patterns.

An excellent partner for polyrhythmic and swinging beats.

Knob controlling beat creation with different modes for filling / unfilling patterns.

Each channel has an individual pattern length from 1- 32 steps with visual feedback on the display, changing dynamically between 16 and 32 steps.

Probability per channel in percentage provides random triggering and brings static patterns generativly alive. Shuffle / swing per channel makes it groove as hell!

Individual filling methods per channel to adjust how your knobs create or interact with patterns. Choose between standard, euclidean and random.

Encoder for adjusting the tempo in BPM, dialing through patterns and start / stop.

LED buttons for direct triggering, adding or deleting steps and for indication of triggers. Packed with additional functions using the shift button.
Flexible clock input to capture all common clock resolutions.

Clock and reset output.

RGB color changes per pattern, to change the mood of your sequencer.

Specs

14HP
Depth: 28mm
+12V 100mA
Output 5V
MCU RP2040

noisyfruitslab.com"

Introducing Pip Filter & Pip LFO by ALM

video upload by ALM TV

"The 'Pip Filter' is a compact 4HP voltage controlled 2 pole low-pass filter with resonance and built in VCA. Here we take a look at all the features of the module.

The filter cutoff is controlled via both knob control and dual CV inputs with a built in attenuverter. Resonance is manually controlled and will reach into self oscillation with rough V/Oct tracking. A trigger input allows the filter to be pinged for percussive plucked type sounds. Finally, a built in VCA (normalled open) allows for additional independent amplitude control of the filtered signal.

The “Pip Filter’ provides a classic lowpass filter sound in a small form factor with many useful features for sound sculpting."

Introducing Pip LFO

video upload by ALM TV

"The 'Pip LFO' is a compact 4HP all analogue low frequency oscillator with a wide frequency range, voltage control, numerous outputs, reset input and a VCO mode. Here we take a look at all the features of the module.

The frequency of the Pip LFO is set via a manual control and voltage control input. The module features a unipolar square wave output along with both bipolar and uni-polar triangle, saw and sine waveform outputs. When VCO mode is activated, the frequency jumps to audio range and will track V/Oct for approx 5 octaves. A reset input allows the LFO waveform cycle to be reset and produces hard sync functionality in VCO mode.

The Pip LFO’s compact design makes it easy to add a modulation source and an analogue voice into any system."

DIY eurorack modular synth | MOD2 Sample Player : RP2350 based drum module

video upload by HAGIWO

"This module is an open source general-purpose Drum module based on Seeed XIAO RP2350.
Thanks to AI-friendly hardware design, it's easy to create software variations using generative AI.
With general-purpose components and a simple circuit, this module is affordable and DIY-friendly.

Sample player:
WAV sample player.
It is possible to save audio files up to a total of 20 seconds / 18 files.

working documents
https://note.com/solder_state/n/nce8f...
https://note.com/solder_state/n/na31f...

Code with WAV samples included
https://www.patreon.com/posts/code-fo...

PCB gerber data & PCB assy production data Download
https://www.patreon.com/posts/mod2-rp..."

GND Compendium

video upload by Todd Barton

"I've had the Gaston [Nonlinear] Dynamics system for just a week. Here is a little compendium of some of my explorations and experiments. This is truly 'next level' modular synthesis design and vision. A cohesive and deep system which encourages experimentation, curiosity and discovery!
https://ryangastonmusic.com/hardware
My Patreon: / synthtodd"