Saturday, June 21, 2025
ellitone instruments' groov-e device #01
video upload by ellitone instruments
via ellitone instruments
the ellitone groov-e firmware v1.0 is a fun and mysterious interactive drum-machine and polyphonic-synthesizer engine that automatically generates musical “grooves”
A “groove” consists of 3 individual sound layers: a drum-machine layer, an ambience-sample layer, and a synthesizer sequence layer. Each of these 3 sound layers can be individually tweaked and swapped to find the right mixture of sounds to make you say “WHOAH, that’s funky!”
The magic behind the groov-e firmware lies within the sequencing and rhythm creation engines. Rhythms and note sequences are NOT simply selected from a list of premade patterns, groov-e generates one-of-a-kind rhythms and note patterns using a series of decision-trees and probabilities. A NEARLY INFINITE number of possible note patterns and rhythm combinations are possible. To make things even more mysterious, these one-of-a-kind note patterns and rhythms are all temporary. Once you make the decision to generate a new drum pattern or synth sequence, the old pattern is gone FOREVER! The temporary nature of the grooves you discover makes them precious. You will NEVER hear the same combination of sounds twice while using this device. Cherish your grooves!
Noisebug - Powered Base Case Test - Experimental Jam
video upload by NOISEBUG
https://www.noisebug.net/
"Today we’re showcasing the Acoustical Apparati powered 104HP Base case with a ten minute experimental jam. This beautiful new line of powered Eurorack cases are available now at Noisebug. The Powered 104 Base (along with many other size options) is at the intersection of form and function, beauty and affordability. The elevated tabletop base section has a sizable, smooth working surface area. Perfect for including your favorite drum machine, effect pedals, keyboards or, staking additional 104HP cases. Build the tabletop eurorack tower of your dreams with this beautifully affordable new line of Eurorack cases. Unpowered skiffs and larger cases are also available. These cases were commissioned by Noisebug and constructed by Acoustical Apparati. Head to noisebug.net to learn more. Or come into the shop and check them out for yourself."
Acoustical Apparati at Noisebug
KORG MINILOGUE BASS Special Sounds Ft. MASCHINE
video upload by Woody Piano Shack
"Demo of the presets only available on the KORG MINILOGUE BASS, which otherwise apart from controversial black and red color scheme (see my separate videos!) is the exact same as the regular KORG MINILOGUE. Although these exclusive presets are superb, no, it is not possible to export and load them on the regular MINILOGUE or MINILOGUE XD.
Featuring NATIVE INSTRUMENTS MASCHINE+ STANDALONE GROOVEBOX."
"Lesson packs also available for one-time purchase on Patreon.
MORE WOODY PIANO SHACK
https://woodypianoshack.com"
Sequential Circuits Prophet VS Vector Synthesizer - Some presets
video upload by Mikus Pilatus
"Digital Oscillators + Analog Filter + Analog Chorus .
Excuse my lame playing - I get stage fright
Shows off its tone , which is unique - I’m not sore if it’s great or not .. I keep changing my mind ."
Oberheim SEM Patch Panel SN 0846
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"This is the 2007 reissue of the Oberheim SEM (Synthesizer Expander Module) with the Patch Panel edition, hand-crafted under the direction of Tom Oberheim himself. A faithful recreation of the original 1974 SEM, this version adds extensive CV patching capabilities, making it perfect for integration into modern modular and analog setups.
- Classic discrete analog circuitry with the unmistakable SEM tone
- Beautifully musical multimode filter (lowpass, bandpass, highpass, notch)
- Fully patchable: CV/Gate control over every major function
- Designed for modular systems, Eurorack expansion, or standalone use
- Compact, rugged metal housing with vintage aesthetics
This SEM is a favorite for its warm, punchy sound, effortless musicality, and the ability to serve as either a raw tone source or a characterful processor. Perfect for analog purists, modular enthusiasts, or collectors of classic synth gear.
This unit is practically new, never used, in its original box.
I have another identical SEM, also never used, but it's not in its original box. Enquire if you want two of them."
via this Reverb listing

- Classic discrete analog circuitry with the unmistakable SEM tone
- Beautifully musical multimode filter (lowpass, bandpass, highpass, notch)
- Fully patchable: CV/Gate control over every major function
- Designed for modular systems, Eurorack expansion, or standalone use
- Compact, rugged metal housing with vintage aesthetics
This SEM is a favorite for its warm, punchy sound, effortless musicality, and the ability to serve as either a raw tone source or a characterful processor. Perfect for analog purists, modular enthusiasts, or collectors of classic synth gear.
This unit is practically new, never used, in its original box.
I have another identical SEM, also never used, but it's not in its original box. Enquire if you want two of them."
Korg MiniKORG 700S SN 00110 w/ Extras
Note: Auction links are affiliate links for which the site may be compensated.
video uploads by Vintage Synthlab
Playlist:
1. 1974 MiniKorg 700s K2, vintage analog synthesizer for sale in Portland, Oregon - Demo 1 (Pop Songs)
via this Reverb listing
"All items that come with this sale:
* 1974 Korg MiniKorg K2 / 700s
* Kenton CV Upgrade (adds 3 CV input jacks/sockets on backside of synth)
* Kenton Pro Solo Mk2 (MIDI-CV convertor)
* Custom Flight Case
* USB to 2-channel MIDI convertor box + long USB cable
Demo video # 1:
Demo video #2:
This 1974 MiniKorg K2 / 700s works and sounds great. It has the Kenton CV upgrade, a hardshell case, and I’m throwing in a Kenton Pro Solo Mk2 MIDI-to-CV converter, a USB to 2-ch MIDI convertor, long USB cable.
Everything works great and is ready for any modern studio DAW, or adaptation to your external MIDI capable hardware!
The Kenton CV upgrade “3 socket” kit has three 3.5mm ports (easily interfaces with modular synthesis architecture!) or a MIDI-to-CV convertor (which I am including for free with this sale). The 3 inputs are: CV (pitch in), GATE (note on/off), FILT (filter control).
The synth has been with me for about 14 years. I serviced vintage synth and pro-audio gear for the last 30+ years, and this was one that I restored, upgraded, used for recording, and cared for. Every key contact works great, all adjustments have been calibrated, it stays in tune, and every feature works."
video uploads by Vintage Synthlab
Playlist:
1. 1974 MiniKorg 700s K2, vintage analog synthesizer for sale in Portland, Oregon - Demo 1 (Pop Songs)
This is Demo 1 (1 of 2 videos) highlighting the sound and character of the 700s / K2 synthesizer in action. This video contains 3 short pieces from 3 famous songs that were written and recorded during the 1970s using the 700s / K2 synthesizer.2. 1974 MiniKorg 700s K2, vintage analog synth for sale in Portland, Oregon - Demo 2 MIDI Bach BWV 565
1. The Cure - A Forest
2. The Cars - Just What I Needed
3. The Normal - T.V.O.D."
1974 MiniKorg 700s K2, vintage analog synth for sale in Portland, Oregon - Demo 2 MIDI Bach BWV 565
This is Demo 2 (2 of 2 videos) highlighting the sound and character of the 700s / K2 synthesizer in action, and showing the external control of DAW, via MIDI, into a MIDI-to-CV convertor, connected to the CV inputs on the back side of the 700s. The MIDI songs has multiple organ and harpsichord tracks. The MIDI output to the 700s is one of the main tracks for this piece, panned to the RIGHT side of the stereo field, to help discern the 700s sound. The point of this video is to show the capability of DAW control, given all the external hardware interfaces, which comes with the sale of the 700s as one package.
via this Reverb listing

* 1974 Korg MiniKorg K2 / 700s
* Kenton CV Upgrade (adds 3 CV input jacks/sockets on backside of synth)
* Kenton Pro Solo Mk2 (MIDI-CV convertor)
* Custom Flight Case
* USB to 2-channel MIDI convertor box + long USB cable
Demo video # 1:
Demo video #2:
This 1974 MiniKorg K2 / 700s works and sounds great. It has the Kenton CV upgrade, a hardshell case, and I’m throwing in a Kenton Pro Solo Mk2 MIDI-to-CV converter, a USB to 2-ch MIDI convertor, long USB cable.
Everything works great and is ready for any modern studio DAW, or adaptation to your external MIDI capable hardware!
The Kenton CV upgrade “3 socket” kit has three 3.5mm ports (easily interfaces with modular synthesis architecture!) or a MIDI-to-CV convertor (which I am including for free with this sale). The 3 inputs are: CV (pitch in), GATE (note on/off), FILT (filter control).
The synth has been with me for about 14 years. I serviced vintage synth and pro-audio gear for the last 30+ years, and this was one that I restored, upgraded, used for recording, and cared for. Every key contact works great, all adjustments have been calibrated, it stays in tune, and every feature works."
Ciat-Lonbarde Clicker
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
You can find a demo of one previously posted here.
via this Reverb listing
You can find a demo of one previously posted here.
Arturia Origin Desktop Virtual Analog Synth SN 08351000166
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"The Arturia Origin is a flagship desktop synthesis workstation, marking Arturia’s transition from software emulations to standalone hardware. Designed as a “modular virtual analog” synthesizer, it employs Arturia’s proprietary TAE (True Analog Emulation) engine, based on powerful DSP chips, to recreate the character of vintage synth hardware in a flexible digital environment.
It's quite a magnum opus of a synthesizer in "spared no expenses" approach to virtual analog emulation. Combine a CS80 filter with an ARP 2600 oscillator? No problem. It's an amazing synth and I am sad to let it go.
This unit has had its power management module (internal) replaced, so it's in great shape and works perfectly.
Comes with power supply and power cable.
It also has wood sides and front "lip", and they are in my storage unit. Cannot guarantee that they are included but I am fairly certain I'll be able to find them for you."


via this Reverb listing
"The Arturia Origin is a flagship desktop synthesis workstation, marking Arturia’s transition from software emulations to standalone hardware. Designed as a “modular virtual analog” synthesizer, it employs Arturia’s proprietary TAE (True Analog Emulation) engine, based on powerful DSP chips, to recreate the character of vintage synth hardware in a flexible digital environment.
It's quite a magnum opus of a synthesizer in "spared no expenses" approach to virtual analog emulation. Combine a CS80 filter with an ARP 2600 oscillator? No problem. It's an amazing synth and I am sad to let it go.
This unit has had its power management module (internal) replaced, so it's in great shape and works perfectly.
Comes with power supply and power cable.
It also has wood sides and front "lip", and they are in my storage unit. Cannot guarantee that they are included but I am fairly certain I'll be able to find them for you."
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH