MATRIXSYNTH: Wednesday, April 19, 2023

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Wednesday, April 19, 2023

Prism Circuits - Quasar System Patch

video upload by Prism Circuits

"The Prism Circuits Quasar System is an organic esoteric living organism. Being that this system has no sequencing capabilities it forces you to create moving compositions in the sound domain."


Love Hultén's TEGEL - Biodata to MIDI

video upload by Love Hultén

"Sound sculpture based on biodata"

See the Love Hultén label below for more.

PVP Wall Meets Serge VCFQ

video upload by SetonixSynth

"Had lots of fun making this generative patch. 5 SetonixSynth/Tidbit Audio Psychedelic Voltage Processors are chained together and controlling one of my favorite modules, the Serge VCFQ. Much of the variation comes from the precise feedback control provided by the SetonixSynth Laka, which is also mixing in a self-oscillating Marsupial filter and also controlling the VCFQ cutoff via its Sequential output.

Learn more about these and other SetonixSynth modules at"

Osmose Pressure Response - Unbelievable Sensitivity and Control

video upload by EaganMatrix Programming

"Here's a short little EaganMatrix test experiment that drives home the point that we all should be tweaking the Osmose Sensitivity parameters to best suit our playing style(s) which may change depending on the type of music we are playing. In particular, I show how you can modify Pressure and Aftertouch Sensitivity to allow you to impose a vibrato with (at least to me) reasonable and comfortable pressure without triggering Aftertouch effects that you may not want to incorporate with your vibrato. The range of sensitivity control over pressure on the Osmose is truly amazing (and bend too but did not go into that here)."

Last Call to fund flightofharmony's Facehugger Eurorack Module

flightofharmony's Facehugger Kickstarter campaign ends in 65 hours. If you have any interest in seeing it make the light of day, now is the time. Click through for full details on the module and the campaign.

Battery Powered Octatrack with Wood End Cheeks

video upload by EZBOT

"This is my daily driver. We installed a 5 hour custom battery inside my Octatrack that charges via the standard power supply. Battery made by Pat from my Discord and Patreon.

Get the wood end cheeks here:

Sign up with DistroKid and get 7% off with this link: (definitely do this)

Step up your game with 1 on 1 lessons:
Just have a few questions? Get 1:1 help from me via Xip:
Get my Octatrack Performance Template with regular updates (among other rewards) by joining my Patreon:
Get the template in it's current state at Ko-Fi:"

AMSynths 100M Module Update

video upload by AMSynths

"An update on the new AMSynths range of Eurorack modules that re-imagine the Roland 100M prototypes of 1978, and add exciting new modules and features. Seven modules are in development with release dates from May 2023. New powder coated panels with white silk screen lettering have been developed over the last few months, along with custom components."

Roland JD-XI "Organica" 40 Presets and Sequences

video upload by LFOstore

"Welcome to the world of Organic Sounds where different particles are combined in a single whole.


JD-XI is one of the complex & deep machines with great potential, affordable price & compact size from the Roland's modern range.

By Nick Klimenko aka Chronos, a creator of "Organica" for Waldorf Blofeld & "WS Universe" for Korg Wavestation.

40 organic presets & sequences ready to breathe new colors into your music and inspire creativity.

Every patch of our soundset is musical & can be immediately used in your tracks & production.

Inside the pack:


Instructions of How To Load are inside the pack.
Enjoy and may the music come with you!"


video upload by MAKEN0ISE

"Strega sometimes has a reputation as a noisy or even harsh synthesizer. But is it capable of pleasant ambient tones? Let’s patch it up with a 0-CTRL and a 0-Coast and find out!"

Behold the power of the DB-01 triangle

video upload by Richard DeHove

"Saw is everyone's friend, square is famous, so where does that leave triangle? The quiet one of three three, but beautifully formed and hides many talents. This is sort of a jam video, a tribute to the triangle but also a way to demonstrate a few different techniques to use when playing live.

First, the triangle is the only primary waveform used here to generate all the sounds. That varies from the cute little plinky sounds of a pure high triangle to the almost brassy sound when the sub-oscillator is layered in. The pattern consists of just three notes spanning three octaves so it's incredibly basic. But the contrast between the low hits and high plinky-plonks going through the Nemesis delay rhythmic setting creates the illusion of a much richer - even layered - pattern with drums. But of course it's all just one layer on the monophonic DB-01.

I'm playing the DB-01 arpeggiator over the top of the pattern and this causes the pattern notes to sometimes be "overwritten" and drop out which appears like a pattern variation. Then by varying the length of the arpeggiator gate you can get apparent note length differences between the pattern and the arp. The LFO synced to a 6-beat loop on a saw shape adds to the variations.

As usual there are no other effects used or DAW processing. But I did do some chopping up of the piece to trim it back from its magnificent 18-minute original :)

Images are all original creations on the theme of triangles using the Stable Diffusion AI platform.

Lots of downloads for supporters on Patreon:
Many thanks to my kind patrons who keep this channel ad-free
My website:"

Zaturn Filter In Urano!

video upload by gotharman

"The original Zaturn analog filter is now available as a filter board!"

Loscha Opens: Roland 100m 180 CV/Gate keyboard.

video upload by Edward Jones

Inside a Roland 100m 180 CV/Gate keyboard controller.

Moffenzeef Modular Stargazer Limited Run of 75 - Red

via this auction

"Moffenzeef Stargazer, a monster of a self contained synth that… well if you’re reading this you get it. Scare the hell out of your neighbors or destroy the sound system at a local club,. This thing is not for the faint of heart, a sci-fi soundtrack in a box! This is from the limited run of 75 In red a few years ago but as you can see in extremely good condition with all original packing and swag."

Yamaha DD-14 w/ 25 Point Patch Bay Mod

via this auction

"Rare 1993 MIDI drum machine with a custom 25 point patch bay. This modification generates an array of original sounds, effects and rhythmic variations. Making a single connection on the patch matrix can dramatically alter the output but applying multiple connections produces an increasingly complex, sometimes aleatoric range of fractured, reversed, tonal, bit crushed, flanged, distorted, aliasing and delayed effects, 16-bit arcade sounds and digital noise, alternative rhythmic patterns and additional accents. The five included patch cables can also be stacked for further sonic manipulation.

The patch bay affects the 100 tempo adjustable onboard rhythms and tracks in addition to the pads and scraper which produce some great degraded digital effects and percussion hits.

8 velocity sensitive drum pads.
A 'scraper' ribbon controller for the performance of preset instruments, scratching and rolls.
100 preset rhythms with instrumental accompaniment options.
75 PCM percussion and effects sounds.
30 percussion sets.
Selectable roll, flam and echo effects.
Auto bass/ chord function.
Three user song memory.
608 mm x 281 mm x 105 mm."

Dave Smith Instruments Poly Evolver PE SN 00743

via this auction

"This is the PE (potentiometer edition) with brand new knobs. Also comes with brand new power supply."


via this auction

Oberheim Matrix-1000

via this auction

"MIDI programmable Oberheim Matrix Module loaded with 1000 presets. Each of its 6 voices have two DCO's (digitally controlled analog oscillator), a low pass filter, 2 VCA's, 3 envelope genertators, 2 LFO's, and 2 ramp generators. The Matrix 1000 provides an excellent source of pads, textures and ambient sounds. Made in the USA. Some rack rash on top and bottom of chassis."

Oberheim OB-8 SN C33318 w/ MIDI & New Fatar Keyboard

video upload by Douglas McKendrick

"Klassic Keys quick demo of our 1984 Oberheim OB-8"

via this auction

"Does it get any better than this? An immaculate example of an original analogue Oberheim OB-8, looking like its just emerged from the small LA factory in 1984 39 years ago. No mods. No hatchet repairs etc, with MIDI, new Fatar keys and (copy) owner's manual. Arrived from Switzerland March 2023, double-checked/serviced/calibrated by our TOP OB back with us in the E.Midlands. There are now some wicked sounds on board.... be warned, this synth sounds staggeringly good..."

Picks of the inside below.

Two channel CV Gate Attenuator for 3.3V/5V logic with an arrow indicator or voltmeter

video upload by DeftAudio

"An overview of the CV/Gate attenuator with various options. Available here:"

"Deftaudio Two Channel CV Gate Attenuator for Eurorack
Two channel gain and max voltage passive attenuator with three options available:

Basic version, two channel with 3.3V, 5V limits, precise adjustment and LED control
Indicator version, two channel with 3.3V, 5V limits, precise adjustment with a vintage arrow indicator per channel
Voltmeter version, two channel with 3.3V, 5V limits, precise adjustment with a single digital LED voltmeter

This is simple and efficient board to adjust voltage level when interfacing between Eurorack gear and to the outside world. It's specifically important for Gate levels, which exceed typical voltage level of 3.3V or 5V and go all the way up to 12V. While modular gear typically designed to handle those voltages, other instruments such as sync or arp inputs on vintage synths may not have a protection at all.

This board designed in mind with three modes of operation which are not available in other products:

3.3V logic limit. This mode is protected by a Zener diode and meant for interfacing to 3.3 logic gear, such as microcontrollers, Arduino, Teensy, etc.
5V logic limit. This mode similarly has a Zener diode circuit for 5V logic of the majority synthesizers sync, arpeggiator and other various trigger inputs.
Attenuation. In this mode multi-turn potentiometer sets the attenuation ratio. While two other modes set the max voltage limit, in this mode the output voltage is linearly scaled down to the attenuation ratio set.
Purchasing options:

PCB only: Only PCB board is included, other parts, such as connectors, diodes, resistors and LEDs are sourced by a buyer.
DIY Kit: Comes with all parts including arrow indicators or digital voltmeter per selected option. Soldering is required.
Assembled board: this option is NOT planned at the moment."

Star Wars Theme played on GSi Mini Orchestra

video upload by

The sound comes entirely from the App GSi Mini Orchestra running on the iPad. No sequences, entirely played live with two hands on that 61-key controller."

MOTOR SYNTH MKII jam by the incredible @juliabondarmusic ⚡️⚡️⚡️ #modularsynth #synthesizer

video upload by Gamechanger Audio

Motor Synth MKII jam by @photosinferno 👏#motorsynthmk2 #gamechangeraudio #modularsynth

video upload by Gamechanger Audio

YAMAHA CK61 Demo & Review

video upload by musictrackjp

DEMO by Katsunori UJIIE.

Korg Drumlogue // First Touch // Tweaking Factory Bank D // Part FOUR // No Talking

video upload by LESINDES

LESINDES Korg Drumlogue demos

"In FIRST TOUCH with KORG DRUMLOGUE and trying to hack through the menues and features of the machine.
This is the PART FOUR of the session.

Min. Chapter
00:00 Intro
00:14 Donca Rock
08:05 Checkout
11:03 Triplet Pops
12:21 Credits"

modular sketch 4-18-23

video upload by brandon logic

Hollasynth Scanner - Low-Gain Electronics experiments

video upload by LowGainElectronics

"Just playing around confirming functionality of this Hollasynth Scanner pcb behind the Low-Gain Electronics panel. :)"

Details on the Hollasynth

"The Hollasynth four-channel scanning VCA is a version of Jurgen Haible’s Interpolating Scanner idea, in 4U Serge-compatible format, complete with a beautiful front panel by Loudest Warning

It is a four-channel voltage controlled crossfader. As the scan CV is swept from 0V to 5V, the mix output fades from channel 1, through a mix of channel 1 and 2, to channel 2, then fades to channel 3 and finally channel 4. In addition to the main mix output, there is an individual output for each channel. Front panel knobs provide an offset and attenuversion on the scan CV.

The gain of each channel is also individually controllable, so the module can be used as a four channel VCA as well. A switch allows the scanning control to be disabled so that only the VCA CV affects channel gain. Finally there are attenuator for the gain CV and initial gain knobs on the front panel.

What can I do with it?
Probably more than I can! But try some of these:

Crossfade between the wave shapes of a VCO for voltage-controlled morphing, e.g. from sine to saw to triangle to square and back. Like this.
Crossfade between up to four audio sources under voltage control. Like this.
Voltage controlled CV mixing. The inputs and outputs are DC coupled so you can use the module to mix and morph between CV sources
Voltage controlled signal switching. By appying stepped CV to the scan input, e.g. from a sequencer, you can switch between signals rather than fading… if you get the CV set up just right! Like this
Audio Waveshaping. Patch fixed voltages or LFOs or whatever you like into the signal inputs. Send an audio rate 0-5V sawtooth into the scan CV. Use the mix output as am audio signal. Like this. Or like this. (Thanks, Loudest Warning!)
How does it work?
The scanner contains four linear VCAs, one per channel, based on the LM13700 IC. Each VCA is controlled by the sum of two CVs: the direct VCA CV and the scanning CV. The scan CV is provided by a version Don Tillman’s beautiful scanner implementation, used with his kind permission. (But please don’t bug him if you have issues with the module!)"

Patch n Tweak
Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

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