MATRIXSYNTH

Monday, February 02, 2026

Vintage Korg Lambda ES-50 48 Key Polyphonic Synthesizer SN 234587

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


via this eBay listing

"***has some issues. Please read fully before purchasing.

I'll start by saying the ENSEMBLE section of this synth sounds incredible and works 100%. The ENSEMBLE section is where the Brass, Strings, Chorus (think synth choir, not a chorus effect), and organ sounds are found. These are the bread and butter of this synth. Huge, fat sounds found in this section, and they all work excellently.

The PERCUSSION section is where the more "transient" sounds are found and they all work on each of the 4 settings (Electric Piano, Clavi, Piano and Harmonics). However, the "B" key in each octave either doesn't sound at all, or just makes a faint sound that is not at all like the others. The "TREMOLO" effect in the PERCUSSION section does not work at all, and if you select it, it effectively mutes all the sounds in the percussion section.

The Chorus modulation on the stick is very very faint, and sometimes not really audible at all. The pitch bend however works flawlessly, and the spring to return it to center is in tact and working 100%. The "CHORUS/PHASE" effect buttons work but the effect sounds underwhelming, but it does work. I don't know enough about the architecture of this keyboard, but I'm assuming the CHORUS/PHASE effect buttons and the CHORUS PHASE control on the stick are related.

Everything else works like it should. And even with these "issues" named above, this is still a very functional synth with some killer sounds that just don't sound like anything else.

Fully polyphonic! ALL notes. Its wild.

Cosmetically it is in very nice condition. There is one light colored scratch down the left side of the wood case (pictured).

I have not made any attempt to service this keyboard. Therefore, this could be a simple contact cleaning for some of these issues to restore some, if not all of its original functionality."

Roland JD-Xi 37-Key Analog/Digital Crossover Synthesizer SN Z1F092

Note: links to listings are affiliate links for which the site may be compensated.
video upload by Roland Perez



via this eBay listing

Roland JX-3P Analog 61-Key Synthesizer with PG-200 Programmer

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


via this eBay listing

"The Roland JX-3P Analog 61-Key Synthesizer is a pro-grade keyboard synthesizer designed for music production and performance. With its classic analog sound and 61 synth keys, this Roland model offers a versatile range for creating unique and dynamic music. The included PG-200 programmer allows for even more advanced customization and control over your sounds, making it a valuable addition to any musician's arsenal. Ideal for professionals and hobbyists alike, the Roland JX-3P provides a high-quality and expressive playing experience for creating a wide variety of musical styles."

Super 8 Patch Build With Hazel Mills: "SIGIL"


video upload by UDO Audio

"Join Hazel as she walks us through how some of the Super 8 patches were created for her recent performance video, 'SIGIL'." [posted here]

More from Hazel here: https://www.hazelmills.com/

Cosmotronic MESSOR PEDAL / a serious COMPRESSOR for the studio or the stage / extensive playthrough


video upload by BRiES

"In this video we discover what the reinvented MESSOR pedal by Cosmotronic can do to a variety of sound sources. We also have a look at all the controls.

Want to know more?
Cosmotronic Messor Pedal webpage: https://cosmotronic.nl/modules/messor...

0:00 intro
2:30 features explanation
17:07 drums and loops
34:47 sidechain example
41:53 full mix and stems
55:23 closing thoughts
57:09 thank you for watching!
57:22 outro"




A COMPACT ANALOG COMPRESSOR

Messor is a fully analog stereo feed-forward VCA compressor designed for studio, modular, and live systems. The architecture is derived from the original Cosmotronic eurorack module, with extended headroom, improved channel matching, and a revised sidechain topology optimized for wide dynamic ranges.

HIGH HEADROOM

The internal ±12 V regulated power rail provides substantial headroom and consistent operating conditions for both line-level and modular-level sources. It reliably handles high-transient material from synthesizers, drum machines, and percussion-heavy sources without premature clipping. High-impedance inputs and balanced outputs simplify interfacing with modular systems, samplers, and balanced studio equipment.

Signal flow begins with a low-noise stereo preamplifier offering up to 18 dB of gain, followed by a pair of matched VCA control blocks. The feed-forward topology provides predictable transient behavior, accurate envelope shaping, and stable stereo imaging. A post-VCA conditioning stage adds tube-like saturation, introducing controlled harmonic content when driven into overload.

Schlappy #202day jam


video upload by SCHLAPPI ENGINEERING

"It's #202day ! The MC-202 is one of my all time favorite synth so I wanted to build a patch around it using the Schlappy Patching system.
Only the bottom row is used (apart of a Mixswitch to mix the voices).
MC-202 to Angle Grinder for additional filtering.
MC-202 gate out to two Nibblers for drum sequencing and stepped modulation.
Kick drum by two channels of the Boundary Layer.
HiHats by a feedbacking BTFLD in a Boundary.

Have fun!!

More infos on all modules at:
https://schlappiengineering.com"

On Giant’s Shoulders


video upload by Deep Forest

"While playing the bass line, a blast from the past came back to me.
Psychedelic vibes. Inspiration always comes from our roots.
Standing on the shoulders of giants.
Recorded just to capture some ideas — not a proper recording session.
#ModularSynth
#Buchla
#PinkFloyd
#DavidGilmour

Follow Deep Forest :
| Website : http://www.deep-forest.fr/"

Two Oberheim Buchla OB-MX's and a Waldorf Wave in the background.

Serge Modular Study 28 / Nirvana Strings (with Empress Effects Zoia 10K)


video upload by takao_kurokawa

"Voices:
Serge Modular by Random*Source Tantra & MANTRAII

Effects:
Empress Effects Zoia 10K

#sergemodular #modularsynth #ambientmusic #experimentalmusic"

Unlocking the Full Power of the Leviasynth Sequencer


video upload by Scott's Synth Stuff

"The ASM Leviasynth sequencer is far deeper than it looks—and in this video, we explore everything it can do. From real-time and step recording to probability, rules, macro automation, rhythm tap, and even turning sequences into arpeggiator phrases, this is a full hands-on walkthrough for musicians who want to go beyond basic patterns.

You’ll see how to build evolving sequences, edit every note in detail, perform with tracks live, automate macros, and creatively blur the line between sequencer and arpeggiator. Whether you’re new to Leviasynth or already programming patches, this video will unlock powerful workflows you probably didn’t know were possible.

If you love deep synth engines, creative sequencing, and performance-ready sound design, this one’s for you."

0:00 Intro
0:34 Initializing the Sequence
1:37 Overview
2:07 Track Parameters
5:06 Track Settings
7:55 Other Sequencer Controls
8:58 Realtime Recording
10:37 Editing the Sequence
15:39 Step Recording
16:32 Recording Macros
18:09 Performing the Sequencer
18:53 Sequencer to Arpeggiator

700 Function Processor Patch #3 | One Module, More Patch Space


video upload by Gm Xe

🌐 Website: https://gmxe.org

Additional 700 Functiion Processor posts
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