MATRIXSYNTH: Thursday, April 29, 2021

Thursday, April 29, 2021

Super Rare Waldorf Wave Shadow -32 Voice- 76 Keys for Sale

video by Borish Electronics

Listed for sale on Reverb here.

"For sale is an ultra rare 32 voice 76 key Waldorf Wave Shadow! You won't ever see another one like this for sale again. There were only 300~ made and probably less than 100 have these options!"

Listed at $39,999, so $40k.

This one was spotted and sent in via Soviet Space Child.

Details via the auction

"Ultra rare 32 voice 76 key Waldorf Wave Shadow! You won't ever see another one like this for sale again. There were only 300~ made and probably less than 100 have these options!

This Wave was formerly owned by Drew Neumann and he took very good care of it. His friend's signatures can be seen on the back panel under the face plate.

There are almost no issues with this synth. There are 3 LEDs out and the display is dim - that's it. I purchased some replacement LEDs but would need to modify the circuit board to match the intensity of the originals. The owner and I decided it was not in our best interest to change them, so they have been left alone. The LEDs that are out are the -1 OCT footing for OSC 1, the -2 OCT footing for OSC1, and the HOLD LED in the manager panel. I can include the replacement leds in the sale. Unfortunately, there are no replacement options available for the back light on the display. The ELP can be replaced, but it is very very risky. Again, we decided to leave it alone.

The hydrolics that hold up the back panel fail all of the time. I just replaced them last week. Also, a new pair is included in the sale.

The original disk drive has been replaced with a 16GB USB drive.

The internal battery was replaced last week and the operating system was updated to OS 1.910. More info can be found here about the new OS:

I went through the entire self test menu. All buttons, sliders, and potentiometers are working perfectly without glitches or data skips. All potentiometers move smoothly and feel fresh. You can see from the pictures that all of the self tests came back OK. You can also see that 32 voices have been installed and are working perfectly."

Note the last image of the display below shows Board 3 not installed and a Failed message. I'm guessing that's one of the slave boards that would bring it up to 48 voices, referenced here.

Waldorf Micro Wave w/ Waldorf Soundset #1 Card

via this auction

Roland MC-4 Hack demo - Vivaldi Four Seasons, Spring Movement

video by dnigrin

"Roland MC-4 playing 4 track sequence of Spring Movement of Vivaldi's Four Seasons, programmed using MC-4 Hack, software created by Defective Records Software."

The MC-4 is sitting on an Analogue Solutions Colossus no less. Apparently the video is of Jesper Kouthoofd, CEO of Teenage Engineering.

dnigrin is the man behind Defective Records, who brought us the Fauxmo Ensoniq Fizmo editor / librarian, Cyclic sequencer in collaboration with Mutable Instruments, the M-185 software sequencer, and Klee software sequencer. You can find them all in various posts here.

Roland MC-4 Hack made it's first appearance here on MATRIXSYNTH on August 18, 2011.

Round 1: Circuit Tracks jam // Novation Live

video by NovationTV

"Watch Novation’s US Product Specialist Team as they all use the same sound pack to create 5 different songs, live, on the newest member of the Circuit family: Circuit Tracks.

Round 1 will feature special guest @Gabe Miller Music​ producer and groovebox enthusiast - check out Gabe's expert demos.

Circuit Tracks is an extraordinary standalone groovebox for the modern producer. With two refined polyphonic digital synth tracks, four drum tracks, creative FX and on-the-go capabilities, it’s the perfect hands-on device for the agile music maker.

--- Discover Circuit Tracks:"

Elektron Talk: Live Resampling, iOS Sampling, Rytm Performance Template

video by EZBOT

"Live streaming Elektron ~ tips, tricks, technique, and style!"

Mike303 Robot SVC 350 (ELECTROFUNK)

video by SuperfunkOfficial

Mike303 Robot SVC 350 (ELECTROFUNK)
Sequential Circuits Prophet 5 : Bass
Oberheim Matrix 6 : Sweep & Strings & fx
Oberheim DMX : Drum Machine
Roland SVC-350 : Vocoder
Roland MC-500 MKII : Sequencer
Small Stone Electroharmonix : Phazer

Recorded live, no blue light , no synth plugins !!!!

Restored Vintage ARP Quadra Synthesizer Keyboard with MIDI

video by Synth Chaser

via this auction

"This ARP Quadra has just been professionally overhauled by Synthchaser, the foremost expert on ARP Quadras! Work done included new orange LED sliders (illumination can be disabled before shipping at buyer's request), recap of all tantalum and electrolytic capacitors, new touch sensor, keyboard refurbishment, new IC chips, reliability enhancements, and perhaps most unique of all... this may be the world's first ARP Quadra with MIDI!

While many synths are listed as "serviced" or "fully serviced", they are usually devoid of any details of what was actually done. Those that do provide details or service invoices often reveal that the synth was merely superficially serviced, and not genuinely "future-proofed". I have not only serviced this Quadra, I've taken it down to the chassis and overhauled it. Work done included:

Casio CZ-1000 w/ Original Box, Cover & Extras

via this auction

"Includes a CZ-1 ROM Cartridge RC-30, (Organ/Synth. Sound/Sound Effect). I've also added a RA-3 RAM Cartridge for loading your own sounds and manuals for creating those sounds and how to do it. There's also a COSMO SYNTHESIZER CZ-101 Operation Manual which gives you a full run down on how to use the Casio CZ-1000. These manuals also give you a complete guide as to what this synthesizer is capable of really doing. All of this in its original packaging."

Sequential Circuits Prophet-600 Analog Polyphonic Synthesizer SN 4916

via this auction

"Working Sequential Circuits Prophet-600 analog polyphonic synthesizer.

-Cosmetics pretty good for a nearly-40 year-old keyboard (see the pics).
-Control membrane switch panel fully working
-all pots & switches working appropriately
-recent battery change
-power supply electrolytic capacitors replaced in last 5 years
-all tantalum capacitors replaced with electrolytic capacitors
-new electrolytic capacitors in VCF circuits
-basic midi in & out functionality verified
-control foot switch verified"

Siel Orchestra from 1979

via this auction

You can find a demo of one previously posted here.

Dreadbox Murmux Limited Edition Synthesizer

via this auction

You can find a demo with one posted here. Note there is a V2 as well. You can find posts featuring both here.

Listing details: "Murmux Initiate - #41 The rarest of boutique analogs •Full Analog Vintage Mono Synth •2 VCOs with suboctave •Saw and square wave •4-pole 24db/oct VC Low Pass Filter •Triangle wave LFO modulation •Voltage controlled Amp •2 Envelopes ~ amp and filter •External Audio Input •Oscillator Pitch CV •Electronics by Dreadbox •Enclosure by Black Science •Completely Handmade, everything crafted by hand, with love Simple and beautiful design. This was from their original line of synthesizers, and the beginning of dreadbox history. #41 of 100 *dip switch upgraded. (Currently on midi ch.2) Includes original power supply Includes rare murmux t-shirt (m) Includes laminated user manual Includes Dreadbox warranty card Includes new original user manual *Does not include original packaging"

Oberheim Matrix 6R - Rack Mount Synthesizer SN K65 1358

via this auction

Tape Delay HAWK - test after repair and replacing tape to VHS with Oberheim Matrix 1000

video by Alexey Taber

ST Modular - SLOPES (Slopes Mix-Output on a Mini-Screen)

video by Stefan Tretau

"This is just a short walk through some slopes of the mix output shown on a mini oscilloscope. It is supposed to demonstrate the different types of CV shapes you can create with SLOPES.
In order not to bother you with annoying bleeps throughout the video, I have included a little meditative track I recently made. Enjoy!"

ST Modular - SLOPES

video by Stefan Tretau

00:05​ AR Envelope
00:59​ Four Slopes
01:59​ Slow Fours Slopes
03:04​ Creating Kicks with SLOPES, FRANZ and GIVE II
04:22​ Slopes as FM Modulation Source
05:07​ Slopes´n Rings with external Clock

ST Modular - ENVELOPE (Envelopes on a Mini-Screen)

video by Stefan Tretau

"This is just a short walk through some envelopes shown on a mini oscilloscope. This is just to demonstrate the different types of envelope shapes you can create with ENVELOPE.
In order not to bother you with annoying bleeps throughout the video, I have included the track "About the Room" from my current album "Ostinato Modulare" as background music (surreptitious advertising off) :-)"


video by Stefan Tretau

0:00​ Loop Mode / Shapes / Long / Short / CV pots
1:33​ Manual Gate
1:42​ External Gate / Internal Modulation
3:40​ Rise Fall CV External Modulation
4:14​ External & Internal Modulation
5:28​ Internal VCA
5:54​ Trig In AR Envelope

Korg Opsix - Sensitive FM Keys Presets (Demo/No Talking)

video by Anton Anru

"Welcome to the soundset for Korg Opsix - Sensitive Keys.
It is a collection of 50 beautiful keys presets: pianos, plucks, mallets, bells, stabs, synths, organs, brasses, clavinets, and others. This bank of presets will give you a wide palette of sounds: gentle and rough, dry and wet, acoustic-like and electronic, soft and clicky, short and sustained.

🔔 Get "Sensitive Keys" soundset:

All the presets are very lively and expressive. Velocity controls envelope, tone, effects, etc. This gives an illusion of a real acoustic instrument articulation.
ModWheel adds new colors to each timbre. Movement: tremolo, vibrato, or filter modulation; brightness and power, new layers and effects; attack and decay behavior.

Opsix parts are composed and performed by Dmitry Chemyrev.
For some presets we chose a 5-octave midi keyboard to play parts with wider notes range.

00:00​ Smooth Strike
00:54​ Miraculous, Languid, That Organ
01:50​ Lame Bottom, Gentle Words, Resonant Highs, Ultra Tap
02:21​ Enigmatic, Wah Clavi, Water Pipes
03:01​ Distorted Story
04:09​ Saturated, Gentle Words, Taste of Nature
04:53​ Intimate Night, Clicky
05:29​ Ancient Cave
06:37​ Harmonica
07:01​ Warm Motherland, Universal EP, Languid
08:18​ Bright Bottles
08:54​ Piano for Kids, Glider
09:46​ Major Mood, Soft Brass, Dreamy Plucks
10:31​ Unison Organ
11:10​ Midnight Sorrow
11:47​ Postponement, Sharp Mallets
12:18​ Gentle Words
13:10​ Toy Keys, Organic Stab, Faraway Country, Wide & Round
14:32​ Rich Warmness
15:16​ Bright Pluck
15:43​ Digital Aftertaste"

Moog Subharmonicon Tutorial. Part 4. Pitch Modulation. Difference between VCO and VCO SUB inputs.

video by Anton Anru

"The shortest episode of the series, and it demonstrates a curious thing: the difference between VCO and VCO SUB pitch modulation. One behaves regularly, while the other gives an unexpected result. And this effect is a nice tool to create entirely different timbres.

🎛️ Presets for Moog synths:"

Moog Subharmonicon Tutorials by Anton Anru

TRIPLE X SNAXXX - Press/Play Mini Documentary (Live at Citizen Vinyl, 2/28/21)


This one is in via supporting member, Alex M of TRIPLE X SNAXXX.

"We recently did a durational in the record pressing plant as our record was being pressed. We set up three cases of modular, a Moog Source, Minitmoog (rare), Roland RS09, some Roland boutique stuff, and an SCI Six Trak. It took place at Citizen Vinyl, in Asheville NC. We used recycled vinyl so each one looks different. Pinks, Lilacs, splatters, marbled Grey with clear windows. No two are alike. They are for sale through our Bandcamp site:"

Video description:

"TRIPLE X SNAXXX played three sets in the plant while their record was being pressed.
*TRIPLE X SNAXXXX plays MYYYLR DBBBO DGGGR FLYYYBY* drops April 30th on Moroderik Musik. Available at and can be streamed on all of the services. The four songs on it were written, recorded, and mastered in 2020.
Pressed from recycled vinyl gathered from previous projects, no two copies will be the same. Colors range from splatter pink, to mixed orange, marbled grey, and anything in-between. Copies are unmarked. It's a surprise until opened.
Information about how to obtain a copy can be found at

Copies are also available at Coda (Citizen Vinyl's record shop), Schoolkids Records, All Day Records, Harvest Records, The Pour House Record Shop, and the Moog Store.

All music used in this video is from the live performance.
Edited by Jason Axel Summers of Magic Umbrella
Footage shot by Jeffrey Delannoy
Special thanks to Peter, Gar, Seth, Colby, and the entire staff of Citizen Vinyl

(c) 2021 TRIPLE X SNAXXX and Moroderik Musik
All songs written and performed by TRIPLE X SNAXXX (Alex Maiolo and Patrick O'Neill)

Special thanks to Jason Sullivan for the A(d)SCII(vice)"

PPG wave 2.2 Wavetable Synthesizer (1982) Dreamy Soundscape

video by RetroSound

"(c)2007-21 by RetroSound
supported by UVI:

❤️ Support #RetroSound​​ channel:

all synthesizer sounds: PPG wave 2.2 Wavetable Synthesizer (1982)
drums: KORG KR-55B (1982)
recording: multi-track without MIDI, played by hand
fx: reverb and delay

RetroSound synthesizer demo videos since january 2007.
Everything is free. If you like my work, you can also support me with the purchase of my merchandise (shirts, bags, mugs, stickers) or one of my music albums. Thank you!"

Building a Fairlight CMI: Episode 5 (Part 2)

video by Syntaur

"Cris Blyth is a brave man. He has a dream of taking a Fairlight MFX and upgrading it to a Fairlight CMI Series III. In this episode, Cris breaks a CMI that he has borrowed, gets out of trouble using a 3D printer, then drills and files his way to getting lots of things hooked up."

Building a Fairlight CMI Episodes

Resonant Lpg for gotharman instrument V1 [Sound demo]

video by Meska

"I juste finish the resonant Lpg, for gotharman instrument, after receive the last part i was needed. Capture is a bite dark, but you can see the value on screen ;) !
Here a complete sound demo, just remenber due to vactrol eatch board will have sithly diferent responce. i'm now waiting the last part for the wavefolder beford assembling the first filterboard :)

if you have some question or sugestion about the designe feel free to leave a coment or to join the muff tread :

Thank you for watching. My name is Meska of the statik collective . I've been making mostly "dark and expérimental" music for more than ten years now, i'v learn so much online, now it's time for me to share my knoledge, my exploration and this channel is a place to talk about the tools, sound design and techniques to make music with.
i'm tattooist at day jobs and you can found my work here :

You can stream my albums and EPs at"

Yamaha RS7000 screen exchange and short demo

video by Floyd Steinberg

"The #yamahasynth​ RS7000 is a #groovebox​ released in 2001, running Yamaha's AWM engine (that's sample based synthesis). It's also a #sampler​ with up to 64MB RAM which translates to roughly 6 minutes of stereo samples. I found this on ebay for a good price, with a broken display, which I exchange for a new one in this video.

Table of contents

00:00​ Hello
00:30​ exchanging the display
06:23​ demo
14:18​ bye

The LCD:
My Spotify page:
My patches & sample sets:

Novation Ultranova Demo

video by Synthesizer Revolution

"Sound demo of the Novation Ultranova virtual analog synthesizer."

Novation Supernova II Pro-X (48 voices, OS 2.0)

via this auction

The room matches the synth. See the last pic.

Roland SH-32

via this auction

Like a NASA summer synth.

Roland SH-101 Synthesizer SN 281762 w/ Blue Logo Case

via this auction

Sequential Circuits Six-Trak SN 002907

via this auction

"Sequential Circuits Six-Trak Polyphonic 48-Key Analog Synthesizer

Synthesizer is in excellent condition, with some minor wear, scratches and signs of use, overall top condition! Tested and works great, this synthesizer does a lot of neat stuff and is fun to play."

DIY Analog Synthesizer Demo

video by wuukaa

"🎹 It's my Монофоникс !

This analog synthesizer is my first big project, it still has lots of things yo work on (unstable tune, noise module, MIDI2CV, ...) I made all the PCBs(manufactured by JLCPCB) and the case myself, just have to work on the labelling of each pots, becausee it looks like a kids project lol :)

On this demo I used my trusty power supply to feed the volage in the CV input of the 2 VCO because my MIDI to CV board is reeeally bad (I suck at coding lol). So the gate signal was always on which makes the enveloppes completely useless in this setup but don't worry I'll try to fix that later on!

And if you can help me with the code of the MIDI to CV I'd be really greatful because mine is pure shi* :3"

How to use the ESK32-30617 HT32F61357 Music Synthesizer MCU development board?

video by Jessica Ca

You might remember the Holtek HT36A4 8-Bit Music Synthesizer from this post.

"📌HT32F61357 Music Synthesizer MCU development board ESK32-30617
💻More Information

00:00​ 00:04​ Opening
00:05​ 00:10​ HT32F61357 Music Synthesizer MCU development board ESK32-30617
00:11​ 00:15​ Layout
00:16​ 00:40​ Development Environment
00:41​ 00:48​ Hardware Connect
00:49​ 01:52​ Audio Workshop software Setting
01:53​ 02:40​ Demo ESK32-30617
02:41​ 02:53​ ESK32-30617 with MuseScore3
02:54​ 03:46​ MuseScore3 Software set up
03:47​ 03:56​


The ESK32-30617 is a development board for Holtek Music Synthesizer MCU HT32F61357. It is convenient for users to develop MIDI / sound-related products with the Holtek music development platform Audio Workshop.

The Audio Workshop has internal integrated a wide variety of editing functions, such as MIDI, Sound, Effect, Sentence, etc., which can be quickly configured to generate target code. With the Audio Workshop, users do not need to write the program codes. The Audio Workshop provide tone editing function. Users can replace with their own tone for tone ADSR parameter adjustment to update tone parameters and simulate tone effects in time.

The MIDI / sound effect evaluation and simulation can be quickly implemented when users connect the micro USB of the ESK32-30617 to computer and work with the Audio Workshop.

◆Power supply by USB
◆Editable MIDI
◆The Audio Workshop contains loading and editing MIDI functions (not includes MIDI2)
◆Audio output configuration and MIDI interface configuration
◆Tone parameters editing and replacing
◆With the Audio Workshop, users do not need to write the program codes

✒Product Information
◆Dimensions : 139 x 64 x 13 (mm)
◆Packing List :
- HT32F61357 development board ESK32-30617 x 1
- Nylon hexagon posts x 4

*Development platform : Audio Workshop
*Development board : ESK32-30617
*MCU : Holtek HT32F61357, 32-bit Arm® Cortex®-M0+ Music Synthesizer MCU, including datasheet, package dimension, etc.

🏢 Best modules corp.
🔗NO. 3, Creation Rd. II, Science Park, Hsinchu 30077, Taiwan

Innovative Instruments: Vongon Paragraphs - a musical demo of this gorgeous modulation pedal!

video by Joel Negus

"I took the Vongon Paragraphs for a spin around my home studio with the Teenage Engineering OP-1, the Arturia Polybrute, and my 1977 Rhodes. Listen to how this beautiful instrument interacts!

0:00​ Introduction
2:32​ OP-1 w/ Paragraphs
3:42​ Polybrute w/ Paragraphs
4:43​ Rhodes w/ Paragraphs"

"Paragraphs is an analog four-pole resonant low pass filter with an attack, decay (AD) envelope generator designed with focus on simplicity and flexibility.

Low Pass Filter

The heart of the filter circuit is the AS3320 analog chip — a modern replica of the same component used in analog classics like the Sequential Prophet 5, Pro-One mono-synth, Elka Synthex, and the LinnDrum. Cutoff spans the full audio spectrum and resonance starts to self-oscillate at about seventy percent.

The envelope generator offers modulations in an uncommonly wide range of frequencies — starting as low as 0.05 hz for slowly evolving 20 second long cycles, and reaching up to (and past) the audio threshold at 300 hz for a wave shaping effect similar to sounds found on west coast style synthesizers (“think Buchla”).
Flexible Gain Stages

Paragraphs accepts instrument and line level signals. Dedicated controls for input (drive) and output level make it easy to move between a crystal clear clean tone and and a clipping fuzz. A multi-color LED provides a visual representation of the signal level. Red indicates clipping. Orange flashes indicate the start of overload. Green indicates the presence of signal at or below the nominal level.

Inputs for Control Voltage (CV) and midi are available to remotely trigger the envelope generator. This enables your Paragraphs to stay in rhythmic synchronization with external systems like midi sequencers, euroracks, and digital audio workstations."

Baloran The Pool: First tests with integrated effects

video by Laurent Baloran

"First tests with the integrated effects. For the moment it's the same The Triko as The River, but it's possible that it will change ;)"

Erica Synths Introduces the Black BBD Eurorack Module

video by Erica Synths

"The Black BBD is one of a kind analogue delay module - it features two BBD lines - short 1024 stage, and long 4096 stage that work simultaneously and you can smoothly fade between those two thus creating distinct multi-tap effect. Furthermore, an advanced BBD clock noise cancellation circuit is implemented that reduces unwanted BBD noise without filtering higher frequencies of the audio signal.


00:00​ Patch 1 "HATS"
Pico Drum 2 hi-hat algorithm through BBD in short mode

01:02​ Patch 2 "SNARES"
Pico Drum 2 snare algorithm through BBD in long mode

02:51​ Patch 3 "MULTI-TAP BEAT"
Pico Drum through BBD in mixed tap mode

03:36​ Patch 4 "FM RADIO 1"
ADDAC FM radio through BBD

04:10​ Patch 5 "KARPLUS 2000"
Pico Voice Karplus Strong algorithm through BBD

05:03​ Patch 6 "STEREO DRUMMER"
Pico Drums 2 with randomly selected algorithms send through two hard panned BBD's and modulated with Black Octasource

06:13​ Patch 7 "EASY PADS"
Sample Drum playing a pad sound through BBD in long mode

07:14​ Patch 8 "DRUMBREAK"
Sample Drum playing a breakbeat sample through BBD in short mode

09:02​ Patch 9 "STEREO SYNTH"
Pico Voice Fold algorithm sent through two hard panned BBD's

10:02​ Patch 10 "FM RADIO 2"
ADDAC FM radio through BBD

10:51​ Patch 11 "LPG BLASTER"
Black LPG in self oscillating setting sent through BBD which WET out is sent back into the BBD. everything is modulated by the Octasource in random mode

12:17​ Patch 12 "FEEDBACKER"
BBD pinged with pulsewave from the Black VCO 2"

"The Black BBD is one of a kind analogue delay module - it features two BBD lines - short 1024 stage, and long 4096 stage that work simultaneously and you can smoothly fade between those two thus creating distinct multi-tap effect. Furthermore, an advanced BBD clock noise cancellation circuit is implemented that reduces unwanted BBD noise without filtering higher frequencies of the audio signal. Most of parameters are voltage controlled, which allows to integrate the module in complex modular setups.

Full analogue design
Two BBD lines (1024 and 4096 stages)
Smooth crossfade between BBD lines
Built in LFO
CV control over Time, Feedback and Dry/Wet mix

RRP: 260 EUR (VAT excl.)

UNO SYNTH PRO Review and tutorial - Pros and cons for IK Multimedia's new synth

video by loopop

0:00​ Intro
1:20​ Overview
3:30​ Workflow
5:20​ Synth guts
6:40​ Connectivity
7:50​ Oscillators
8:40​ Mixer
9:50​ Osc x mods
11:40​ Paraphonic
14:05​ Filter
17:00​ Series/Parallel
19:15​ Effects
22:20​ Mod matrix
27:45​ Arpeggiator
29:20​ Sequencer
32:40​ Song mode
34:45​ Scales
36:00​ Pros & cons
41:05​ 128 Presets
1:02:50​ Outro...

Patch n Tweak

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