MATRIXSYNTH: Sunday, October 19, 2025


Sunday, October 19, 2025

Photosynth by Reco-Synth


video upload by Arthur Joly

10.19.2025 Serge Paperface '78 [06]


video upload by batchas

"Images taken from 'Voyage to the Planet of Prehistoric Women' (1968) science fiction film."

Rest In Peace Jon Andersen


video upload by Jon Andersen

Friday morning classical guitar and strings

video upload by Jon Andersen



This one is in via John L Rice who had the following to say:

"'Just me' on ModWiggler spotted this Facebook post of Jon Andersen’s family seeking help and information on selling his Synthesizers.com modular. They posted a link to a video of his from 5 years ago of a performance he did with his modular and a couple keyboards. He only had one other video where he plays guitar and a keyboard."

Both videos are featured above.

Click through the Facebook link if you'd like to help or just leave your condolensces.

Sequential Fourm at Sequential in San Francisco


video upload by Taichy Westwood Nishimory

"touching polyphonic aftertouch (P-AT) of a new synthesizer, Sequential Fourm at Sequential in San Francisco in October 2025"

YAMAHA MODX M Tutorial (M6, M7, M8)


video upload by Woody Piano Shack

"YAMAHA MODX M tutorial applyying to the MODX M6, MODX M7 and MODX M8 and to some extent the YAMAHA MONTAGE M."



"Lesson packs also available for one-time purchase on Patreon.

MORE WOODY PIANO SHACK
https://woodypianoshack.com"

Soma Laboratory Documentary | Voltage Labs


video upload by Voltage Labs

"SOMA Laboratory creates instruments that don’t just make sounds - they start a dialogue. From the Lyra-8 to the Pulsar-23, Vlad Kreimer’s philosophy of 'romantic engineering' challenges convention, inviting chaos, unpredictability, and a deeper human connection with machines."

Montage M8X after one year: Can I sell all my other synths now?


video upload by Floyd Steinberg

"I've owned a Montage M8X for a year. Here's a video of 'this is cool and this still needs some work' impressions, as they came to my mind.

HÄLP ZIS CHANNEL
https://www.patreon.com/floyd_steinberg
https://floydsteinberg.gumroad.com/
https://floydsteinberg.bandcamp.com/"

The video I used for making my main point is this one;"

Hazel's Epic Brass Pad - UDO Super 6

video upload by UDO Audio

Find more from Hazel here: https://www.hazelmills.com/

Electro-Harmonix Memory Man - Solid State Echo/ Chorus - Serviced w/Restoration & Original Box

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


via this eBay listing

Additional Analog U.S. Listings

"This set is in excellent condition and working 100%. It has just been professionally serviced and with some restoration. As you can see, it does include the original box. This is the Memory Man V3, EH-7310, and uses the Panasonic MN3005 BBD. It will be properly packaged when sold and will arrive in the condition as stated. Not sold as-is! Proof of the actual shipping cost will be provided if needed. Although this listing is marked as a US sale only, I will ship to most countries."

Salamander Music Sytems Voice 400 s/n 14 not perfect

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


via this Vemia listing

Click the auction link on top when you get there for additional listings.

This appears to be the first one featured on the site. Pics of the inside below.

via the listing:

"SMS (Salamander Music Systems - sorry for the typo in the title) Voice 400 - Programmable analogue mono synth with 2 VCOs and analogue delay line. Seems to work all OK EXCEPT the modulation generator (LFO) is not working. Condition is average. Has USA plug on, but can be switched between 110v/240v on rear. Also see the next lot."

Yamaha CS30 SN 4145

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


via this Vemia listing

Click the auction link on top when you get there for additional listings.

Pic of the inside.

"Released in 1977, the Yamaha CS30 is the flagship of their CS Monophonic range. It is as close to a modular synthesiser that Yamaha ever made and its modulation and routing options are extensive.
This one plays and sounds great. The synthesiser responds to all the pots and sliders as it should and it's ready to use and create weird and wonderful noises and textures. However, to get it to 100 percent functionality the synth requires a service to fix a few issues. Neither the combined 1+2 audio jack nor headphone output work, though the individual 1 and 2 jacks are fine. The sequencer works when switched to Manual and steps through by pushing the red button. However, the 'Clock' function only works when the synth has been powered on for a while and has 'warmed-up'.

Cosmetically the synth is in pretty good shape with nothing broken or missing. There are lots of very small dots of blistered paint, some with a hint of surface rust. The most noticeable ones are at the top of the control panel but these have not increased in size or number over the past decade-or-so. They don't look too bad, in my opinion. Inside is clean and dry with no signs of damp. One of the C keys has a cigarette burn (WHY??!!!) which has melted the plastic slightly. However, all keys are secure and function correctly. The case has a few marks here and there, but overall it looks good.

The case was designed to make servicing very easy. The front control panel is hinged at the back and can be opened by removing just two screws from each side panel. This then reveals a very neat collection of boards and wiring.

The CS30 can be easily integrated into a modern MIDI studio setup. By using an appropriate converter you can interface various features of the synthesiser via its numerous control inputs and outputs:

Foot Controller (CV) for volume in.

Sequencer CV and Trigger (gate) out.

Key Voltage (pitch CV) in and out.

Trigger (gate) in and out.

External (audio to the filter) in.

It features two voltage controlled oscillators (VCOs), two voltage controlled filters (VCFs - both featuring low-pass, band-pass and high-pass options), two voltage controlled amplifiers (VCAs) and three envelope generators. It also sports a ring modulator and a voltage controlled low-frequency oscillator (LFO).

It is fairly unusual for a hard-wired synthesizer in that it features a variety of switches which allow the user to re-route the signal flow from the usual VCO-VCF-VCA convention. For example, VCO 1 can output a square wave through VCF 1 whilst also outputting a high-pass filtered sawtooth wave through VCO 2. Another example is that the envelope generators can be assigned to any of the VCO, VCF and VCA modules and can also be inverted. Because the LFO is voltage controlled, the oscillating speed can be governed by an envelope generator and different waveforms can be applied to the other modules all at the same time. The CS30 also features an external signal input for filtering other musical instruments and audio sources, which can also be used as a modulation source. It includes an onboard eight-step analogue sequencer."

Original Black Oberheim TVS Two-Voice System

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


via this Vemia listing

Click the auction link on top when you get there for additional listings.

"One of very many items from Calum Hunter's superb home studio - and probably the jewel in the crown. This is a rare black version of Tom Oberheim's classic original Two-Voice synth. Cosmetically it looks a bit tatty at first glance - but on closer inspection, the bad areas where the paint has come off in places are all just on the chassis surrounding the SEMs and sequencer. Oberheim's preparation of these areas was obviously not up to their usual standard. Those pieces are usually white, and they simply over-sprayed them without preparing the surface well enough. In contrast, look at the black section immediately above the keyboard, which is really good.
All the modules (the important bit) are actually in extremely good condition - and apart from the sequencer having four little knob caps missing, near mint.

It would be simple to respray the bad chassis bits if you wanted. The tolex, keys and case hardware are pretty good for their age. There is no lid. The mains socket has been replaced with a safer IEC one. Voltage (TBC) is UK /European.

It has been tested by Audiocircus and is sounding great."

PWM Malevolent Semi-Modular Analog Keyboard Synthesizer

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


via this listing

Additional Perfect Circuit listings

Moog Source Analog Keyboard Synthesizer SN 2041

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


via this listing

Additional Perfect Circuit listings

Korg SB-100 Synthe-Bass SN 750076

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


via this Reverb listing

"I bought this from analogia.pl (i.e., Maciej Polak, check out his album 1977!) in 2022, serviced and converted to North American power. This synth is a little limited, but it sounds great and the portability can't be beat. It also has two features that (as far as I know) are unique to this model among early Korgs: the "bender" buttons and the "Phaser" waveform. As far as I can tell "Phaser" is a very nicely dialed-in pulse width modulation that sounds especially nice in the lower registers.

No major issues in testing, but two notes:

The output jack was a little intermittent when I started testing, but after working a 1/4" plug in and out of it the signal is solid. Guessing it was a little dirty and could eventually use a cleaning if you're handy. The "Traveller" slider is a little stiff around the center of its travel. All audio passes great, so this is really a "feel" thing and something I've also noticed on some (but not all) other early Korgs. In great cosmetic shape overall, but there are many little blemishes and signs of wear, which I tried my best to capture in the photos."

Rare Vintage KORG KEIO (?) CHECKMATE Drum Machine

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



via this Reverb listing

This appears to be the first one to be featured on the site. It looks a bit like the Wexler ROCKMATE. Teisco made a CHECKMATE keyboard. You can fhand a handful of posts mentioning CHECKMATE here.

Details via the listing:

"A vintage Checkmate drum machine, a true gem from the early days of rhythm boxes. This unit is as much a visual statement as it is a piece of music history: with its golden front panel and large knobs, it’s a guaranteed eye-catcher in any studio or collection.

Fully serviced: all electrolytic capacitors have been replaced, ensuring reliable operation.

Everything works as it should – all rhythms, switches, and controls have been tested.

Runs on a single 9V battery inside the unit, making it portable and hassle-free.

About the Checkmate

The Checkmate belongs to the family of early preset rhythm machines from the late 1960s/early 1970s, often linked with Korg’s DoncaMatic line. These units were designed for accompaniment but quickly became collectible for their quirky analog character and stunning design.

Limited but charming selection of preset rhythms.

Simple analog sound circuitry with a warm, nostalgic tone.

Rarely seen today, making it highly desirable for collectors of vintage drum machines.

Why You’ll Love It

While it won’t replace a modern drum computer in terms of versatility, the Checkmate delivers something unique:

A rare piece of music history that shaped the early years of electronic rhythm.

Unmatched aesthetics – the gold panel and oversized knobs look fantastic both in use and as a display piece.

Collector’s must-have – these machines are increasingly hard to find in good working order.

If you’re a vintage synth/drum machine enthusiast, this is a rare opportunity to own a serviced and working Checkmate drum machine. Perfect as a collector’s item, studio conversation piece, or source of authentic retro rhythms."

MFB 501 Analog Drum Machine – 64 Presets, Rare Odd-Meter Rhythms, Works Perfectly

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


via this Reverb listing

Mode Machines Seq-12

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


via this Reverb listing

"corners of the face plate are crushed. still able to be installed into a rack space without issues. Otherwise flawless. Comes with eu power supply and us adapter.

This is such an awesome sequencer. perfect solution for sequencing multiple channels of a drum synth or expander. Each channel has its own cc parameter lock style sequencing and pattern chaining capability. It’s a good balance of intuitive, quick, and deeply complex."

Octave Electronics Cat SRM/II w/ Original Box & Manual

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


via this eBay listing

"Cat SRM/II by Octave Electronics 1983
Vintage, monophonic analog synthesizer with three-octave keyboard.

Two analog VOC's for creating thick, rich sound.

VCO 1 with mixable saw, square, and triangle wave with sub-octave. Square wave has LFO-controlled pulse-width modulation.

VCO 2 with mixable square and triangle wave with sub-octave."

Gorse Lathe - Drone demo


video upload by Synamodec

"GORSE LATHE is a handcrafted experimental synthesizer designed to explore the border between chaos and harmony. In this demo, we dive into its drone capabilities — sustained textures, evolving feedback, and harmonic movement that feels alive and unpredictable.

No sequences. No presets.
Just electricity, movement, and time.

🎧 Best experienced with headphones.

'Every drone is a landscape — you just have to listen long enough.'"

Also see Noise Sculpting with the Synamodec - Gorse Lathe.

Check with dealers on the right for price and availability.

Strymon SuperKar+ (Part 4) Chord Voice w/ Magneto, BitBox Micro, XPO, and ZPO


video upload by Rheyne

"The ‪@strymon‬ SuperKar+ Chord Voice through a Strymon Magneto. Percussion is from a BitBox Micro, bass is from a Make Noise XPO, and the background synth voice is from a Steady State Fate ZPO.

Loops are from Ableton Live, with a Korg SQ-64 acting as a MIDI to CV converter. Ableton's clock is randomized by CV Tools stepped-random LFOs. The Strymon Magneto is clocked by the kick drum trigger. Reverb is from Ableton Live. Recorded in one take.

SuperKar+ is a Eurorack voice module that uses Karplus-Strong synthesis to create the sound of plucked or bowed strings, struck or blown pipes or tubes, or a suite of other sounds."

Mini Analog Sequencer & Matrix VCF: Changing Filter Type Per Step & More #eurorack


video upload by AJH Synth Official and DreamsOfWires

"Using the new @DoepferMusikelektronikGmbH Mini Analog Sequencer to change filter modes on the Matrix VCF, whilst also providing a melody for the VCOs. Ideally, a separate sequencer would be used for each purpose, but just for fun I wanted to see what I could creating using the same sequencer CV to create both a melody, and change filter type on the Matrix. This is made much more viable using the CV MIX module, to adjust the range of CV to cover the modes I wanted to use - predominantly those at the bottom, including 4-pole low pass, band pass, all pass, and the combined 3-pole all pass & 1-pole low pass mode.

Stereo Panning per step also features towards the end (headphones recommended), using the Triple Cross module to pan the mono sequence between 2 outputs, which is sent to a stereo input on the Cosmic Pro. The Tap Tempo VC-LFO is providing sample & hold-style random stepped voltages, which go to the Triple Cross module, modulating the amount of stereo panning between left and right on each sequencer step. I didn't increase the panning amount to maximum, because the result was just too extreme for my delicate ears! It's a great effect though."

TTMC Sequencer Card , Syncussion SY-1 , Buchla Music Easel


video upload by Tokyo Tape Music Center

Pocket Scion / Plinky+ / Modular


video upload by Grain Blanc

"First session with the Pocket Scion from ‪@instruo‬ and Plinky+ from ‪@MakingSoundMachines‬ & ‪@bluespoonery‬ Plinky synth and Modular friends."

Korg Microkorg - Vintage lofi synth sounds


video upload by Cosmo Jones Music

"My Microkorg has none of its original sounds.
It is full of beautiful vintage lofi sounds.
Here are just a few. Enjoy."

Lazy Sunday Jam With NORNS + EP133KOII + iPAD


video upload by Perplex On

"Paired the #monomenorns with the #ep133koii today to see where it goes. The always mighty #awakescript sequences some samples on the #ep133 (using a #widibudpro to send midi over BT to the iPad and from there to the EP133 via USB) while being spiced up with #klevgrandwalls, #kdevicesfauve and #kdevicesttap on the iPad."

Roland GAIA 2: The Vaporwave Synth | Best Features


video upload by MR TUNA Music

"The GAIA2 is still a super synthesizer in 2025 and I think its underrated and overlooked especially when it comes to some cool and wispy vaporwave sounds, and it's USB-C interface.

Here's today's random thoughts on the Roland GAIA 2"

Ambient Drone | AKAI S-950 & Make Noise Strega


video upload by Akihiko Matsumoto

"A cinematic atmosphere made of sound, not melody.
https://akihikomatsumoto.sellfy.store...
This is not a collection of loops. It is a carefully curated archive of long-form drone textures, each exceeding five minutes, sculpted for those who create without the need for rhythm, harmony, or resolution.
Designed for deep listeners and sound designers.
From seasoned ambient producers to experimental filmmakers, this pack speaks to those who understand that sound can live and breathe without a beat. Built from legendary hardware units and bespoke digital tools, these drones are not simply sounds. They are environments.

Stereo Field 皮肤感应噪声盒,入驻合成少数派!


video upload by 合成少数派 Synthesis Minority

"Stereo Field 来自于非常有想象力和崇尚乐器美学的品牌 landscape.fm 它是一个基于触摸的混沌电子乐器,可以用来发出噪音、做效果器处理外部音频,还可以给你的模块合成器做 CV 控制源。Stereo Field是首款入驻合少的代理乐器,我们非常开心把它介绍给你!"

"Stereo Field comes from the imaginative and aesthetically pleasing brand landscape.fm. It's a touch-based chaotic electronic instrument that can be used to generate noise, process external audio as an effects pedal, and even serve as a CV control source for your modular synthesizer. Stereo Field is the first instrument to be featured on Heshao, and we're thrilled to introduce it to you!"

Ambient with Pelle Mode Nord Lead & OP-1 field : Fluvial Terrace 2025-10-19 by atnr


video upload by atnr

"A piece created with the ‪@NordKeyboards‬ Nord Lead and ‪@teenageengineering‬ OP-1 field — an ambient track built from distorted tones generated in the Nord Lead’s Pelle mode and lo-fi synth pads.

The Nord Lead, when set to Pelle mode, produces an unusually aggressive tone. Its output passes through the ‪@strymon‬ NightSky for reverb and filtering.

On the OP-1 field, a 16-bar synth loop was recorded and played back at a slower tape speed, layering additional sounds during performance. The output is processed through the ‪@ChaseBlissAudio‬ Lossy to achieve a lo-fi texture.

================
How to Enable Pelle Mode on the Nord Lead 1

1.Set Program A to 19 and Program B to 65.
2.Hold down SYSTEM, then press SHIFT.
3.While keeping both buttons held, press SET, then press PERF. MODE.
(Keep SYSTEM and SHIFT held the entire time.)

If you hear a clicking sound, Pelle Mode has been successfully activated.
If the program number displays 75, the attempt failed — this happens when CLEAR is pressed instead of SET."
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