MATRIXSYNTH


Saturday, August 23, 2025

Novation Bass Station Rack Analog Synthesizer

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via this listing

Additional Perfect Circuit listings

Korg miniKORG 700FS Analog Keyboard Synthesizer

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via this listing

Additional Perfect Circuit listings

Oberheim Xpander

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via this Reverb listing

"Original vintage c 1985 Oberheim Expander synthesizer module in absolutely stunning condition, SERVICED, with original flight case, perhaps the best surviving example on this lovely little planet. The superlative analog polysynth. Perfect for the pro player, collector, or studio for whom second best is not good enough."

Collector Grade: MXR Drum Computer + Custom Pelican Case

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via this Reverb listing

"This is a museum quality MXR Drum computer Model 185. It's been professionally stored in a custom Pelican Flight case (also included in the sale). At one point this was professionally serviced and fully gone through by Tech guru Jun, at Main Drag Music with the battery replaced. It hasn't been played in several years so a couple of the keys stick. If that bothers you then I'd suggest having a tech lube the contacts. Otherwise it works great and is cosmetically flawless. Those aren't scratches in the photos. A couple of stray hairs/lint seem to have floated into the shot. The individual outputs on this make it extra usable. I've had a lot of success running each sound to it's own guitar pedal or fx path for wild sounds."

Vermona 14 SN 184/222

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via this Reverb listing

"Vermona 14, as new. Original accesories, and a custom flightcase.

serial nr 184/222"

Moog Multimoog SN 2395

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via this Reverb listing

"Vintage Moog MultiMoog, one of the most expressive monophonic synthesizers from Moog’s classic late-70s era. Produced between 1978 and 1981, the MultiMoog expanded on the Micromoog with features like aftertouch, ribbon control, dual oscillators, sample-and-hold, and a powerful 24 dB/oct Moog ladder filter.

Condition:

Everything is fully functional – all keys, controls, and modulation options work as they should. It has not been recently serviced, so while it plays beautifully right now, at some point in the future it will likely benefit from a standard recap/service to keep it running at its best. Cosmetically very good for its age, with only normal wear. This MultiMoog is a rare find, offering the classic Moog sound with more modulation and performance options than most other Moog monosynths of its time. Perfect for both collectors and players looking for a unique vintage Moog with character and depth."

Vintage Korg Polysix Synthesizer SN 386166

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video upload by synthpro

"This is a video I have made going over my personal Korg Polysix. After owning it for 7 years, I feel it is time to let someone else enjoy it and perhaps take it a step further in the restoration."



via this eBay listing

Sequential Circuits Six-Trak Model 610 SN 0199 w/ Original Manual & Dust Cover

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


via this eBay listing

"This is a Sequential Circuits Six-Trak six-voice analog synthesizer. This 80's vintage synthesizer features a sequencer with 2 800 note memories, arpeggiator, 100 voice programs with 35 adjustable parameters each, and MIDI in and out."

Bad Dog Designs OSPRAY 8 Drum Synthesizer


video upload by Pro Synth Network

"I have been very privileged to test, advise, and consult with Paul at Bad Dog Designs on this brilliant drum synthesizer. Taking circuit designs that were over 40 years old, published in E&MM magazine, Paul has recreated and refined these three drum synth designs to create OSPRAY-8, a "vintage" 21st century drum synthesizer.

Four drum modules, three cymbal modules and a clap module, triggerable via MIDI or CV and with a stereo audio output or individual mono outputs per drum, this is the sound of the nascent analog drum synth of the 1980s in a beautiful handmade case.

For more information and details on how to get your hands on one, contact Bad Dog Designs to register your interest.

https://www.bad-dog-designs.co.uk/con..."

OSPRAY8 Analogue Percussion Synthesizer Demos

video upload by Bad Dog Designs

"After about 4 months on and off, I've got my percussion Synthesizer in a state where I'm happy with the look and sounds :)

All original 1980's circuit designs with just a few component changes for later IC's, and of course Midi In and through as well as individual trigger inputs.

The OSPRAY-8 ( Old School Percussion Right At Ya! ) comprises 8 individual modules, arranged as 4 X Drum modules / 3 X Cymbal modules / 1 X Handclap module. There is then a final control module that handles midi, midi channel selection and Stereo output.

The Drum Module can generate a multitude of sounds from Bass drums to Snares, Toms, Rimshots, bleeps and other weird and wonderful sounds.

The Cymbal Module can generate Open and Closed Hi-Hats, Gongs, Cowbells as well as other metallic oddness.

The Handclap does as it says, but will generate multiple claps with full control of frequency / resonance / ambience etc.

As each module has it's own line out and trigger in, you can join two together, so you can combine a handclap with a drum and get a really sharp and punchy snare for example.

The front panel is machined from a single piece of aluminium, the lettering engraved into the surface for a well engineered finish. The Casing is still in development, but you can see a mock up in the clip.
All the audio is straight out of the OSPRAY-8 with no processing."


via Bad Dog Designs

"The Ospray-8 is a fully Analogue percussion synthesizer, housed in a free standing desktop format. The sounds are produced by entirely analogue electronic modules, tailored for different percussive sound types. The Ospray-8 contains 8 modules connected together, comprising of 4 X Drum Modules, 3 X Cymbal Modules and 1 X Handclap module. There is then a housekeeping module that handles midi control, and stereo outputs."

Whimsical Patching // 4. Utility Drum Machine


video upload by Whimsical Raps

All parts here

from Dani:
"When I take inventory on why modular synths remain compelling to me, it is because the format puts one in direct conversation with _voltage_. As mentioned in other videos, every signal in a modular synth is voltage -- some of it moves quickly enough to hear, some of it moves slowly and is excellent for modulation, but pushing this common denominator to its edges often leads me to make choices that a computer or desktop synth simply cannot facilitate with the same improvisational ease. But I also love working with computers as an end-of-chain glue -- not just for editing or effects, but to bring a new set of possibilities to the playground.

This video is a supercut of two processes:

a. The core is a conversation between Cold Mac and Just Friends. Just Friends provides cycling envelopes and pulses, which run through a self-patched Cold Mac. Though Cold Mac is primarily known as a utility module, cross-patching its wavefolders and slews creates gnarly delights out of simple input signals. Adding the inherent rhythmic interrelation of envelopes from different channels of Just Friends to the mix can quickly create a fuzzed-out chaotic drum machine with low subs and bursts of noise. Modulating SURVEY, both by hand and voltage, reveals a world of timbral shapes.

b. While (a.) was exciting and revelatory, it was missing something. Whenever I sequence drums, I love to layer percussive hits with additional samples -- so I took to @kriista's Data Knot, which packages FluCoMa's real-time descriptor analysis tools into an army of useful Max/MSP objects. Data Knot allowed me to use audio from my 'utility drum machine' to crawl through slices of @natesmithdrumsofficial's Pocket Change and a Bonnie Raitt isolated vocal track, which filled things out in a really fun way.

Both the original modular-only recording and the responses of Data Knot are layered to create this hybrid result which, to me, feels really organic and fluid."
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