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.
"PPG - PRK (Processor keyboard) (s/n 01037) In very good cosmetic condition. 72 wooden keys. Untested, powered it up but it does not light up - though not sure what it is supposed to do without the PPG Wave/Waveterm attached. So please assume not working. 110V/240V switchable on back. VEMIA can collect and pack: 36GBP."
Wednesday, October 29, 2025
ARP Odyssey Mk1
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.
"Beautiful and powerful Odyssey Mk1. One of my favourites for sheer cutting through power. This one has been in my studio for over 20 years with regular servicing by Kent Spong and James Walker whilst in UK and more recently 6 months ago by Antonus in Barcelona. It had a Kenton MIDI kit already retrofitted when I purchased it and I later added CV Gate inputs installed by Kenton in London for added flexibility. It comes with a full Flight case included, which I purchased separately from Vemia in 2017. Selling now I have retired. Not in second chance Sunday."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"Beautiful and powerful Odyssey Mk1. One of my favourites for sheer cutting through power. This one has been in my studio for over 20 years with regular servicing by Kent Spong and James Walker whilst in UK and more recently 6 months ago by Antonus in Barcelona. It had a Kenton MIDI kit already retrofitted when I purchased it and I later added CV Gate inputs installed by Kenton in London for added flexibility. It comes with a full Flight case included, which I purchased separately from Vemia in 2017. Selling now I have retired. Not in second chance Sunday."
Mellotron M4000D with 5 extra sound cards
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.
"Immaculate condition with very light studio use. Wonderful feeling wooden keybed with polyphonic aftertouch so you can really lean into the volume of the sounds just like the real thing. Also comes with five additional sound cards – 2, 3, 4, 5 and 6 which have an additional 100 sounds on each. Check out digitalmellotron.com for the full list of each as it’s too big to list here. The cost of the cards was £2,000 on their own. Boxed."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"Immaculate condition with very light studio use. Wonderful feeling wooden keybed with polyphonic aftertouch so you can really lean into the volume of the sounds just like the real thing. Also comes with five additional sound cards – 2, 3, 4, 5 and 6 which have an additional 100 sounds on each. Check out digitalmellotron.com for the full list of each as it’s too big to list here. The cost of the cards was £2,000 on their own. Boxed."
Korg T3 Keyboard Music Workstation
Note: links to listings are affiliate links for which the site may be compensated.
via this listing
Additional Perfect Circuit listings
via this listing
Additional Perfect Circuit listings
Korg M3R Rackmount Sound Module SN 003424
Note: links to listings are affiliate links for which the site may be compensated.
via this listing
Additional Perfect Circuit listings
via this listing
Additional Perfect Circuit listings
RX12 Spectr Digital Rhythm Programmer | Ultrarare Post-Soviet Drum Machine
Note: links to listings are affiliate links for which the site may be compensated.
video upload by Red Star Melodies
This appears to be the first one to be featured on the site.
via this Reverb listing
"The device was produced in Zhytomyr in early 1990s. It was not a mass-produced product, so this device is very rare.
It has 64 rhythms. You can change the tempo of each of them
Also, it has a «second pattern» mode that can add 8 additional drum brakes between drum loops
The drum machine has 10 sound turning on by pushing the buttons: timbale, tom, clap, rim, snare 1, snare 2, tom 2, closed hihat, crash (the crash does nor works)
You can control the sound of snare with a fader
Also the device has and «avt» button. By pushing it together with drum buttons you can add them to the sequence in auto mode.
The device has inputs for external drum pads."
video upload by Red Star Melodies
This appears to be the first one to be featured on the site.
via this Reverb listing
"The device was produced in Zhytomyr in early 1990s. It was not a mass-produced product, so this device is very rare.
It has 64 rhythms. You can change the tempo of each of them
Also, it has a «second pattern» mode that can add 8 additional drum brakes between drum loops
The drum machine has 10 sound turning on by pushing the buttons: timbale, tom, clap, rim, snare 1, snare 2, tom 2, closed hihat, crash (the crash does nor works)
You can control the sound of snare with a fader
Also the device has and «avt» button. By pushing it together with drum buttons you can add them to the sequence in auto mode.
The device has inputs for external drum pads."
Formanta Arton VS-34 ultrarare USSR Vokoder synthesizer | Синтезатор Артон ВС 34
Note: links to listings are affiliate links for which the site may be compensated.
video upload by Red Star Melodies
"For sale on Reverb!
Very rare synth for sale! only 50 pieces were produced
Fully working condition. The video of the work of this device is included.
The device was made by author of famous Polivoks Synth Vladimir Kuzmin.
Synthesizer Arton VS-34 (Vocal Synthesizer 3-octave 4-voice) is a modification of the Maestro synthesizer, designed specifically to imitate the timbre of the human voice.
Synthesizes the vowel sounds "A", "O", "U", "I" of the male and female voices by the formant method, can create articulatory effects. It has the same arpeggiator as the Maestro, as well as a controllable filter and a choir sound device. The joystick allows you to achieve a special expressiveness of the timbre of the voice."
via this Reverb listing
video upload by Red Star Melodies
"For sale on Reverb!
Very rare synth for sale! only 50 pieces were produced
Fully working condition. The video of the work of this device is included.
The device was made by author of famous Polivoks Synth Vladimir Kuzmin.
Synthesizer Arton VS-34 (Vocal Synthesizer 3-octave 4-voice) is a modification of the Maestro synthesizer, designed specifically to imitate the timbre of the human voice.
Synthesizes the vowel sounds "A", "O", "U", "I" of the male and female voices by the formant method, can create articulatory effects. It has the same arpeggiator as the Maestro, as well as a controllable filter and a choir sound device. The joystick allows you to achieve a special expressiveness of the timbre of the voice."
via this Reverb listing
Quick Jam with OP-XY and Vongon Replay
video upload by Ösla
"Adaptation of Afternoon by Ösla for opxy and vongon replay. Hear the full song here vvv
https://open.spotify.com/album/7mOeMf..."
Synthesizing with Moog | Lesson 4: Resonance
video upload by Moog Music
Synthesizing with Moog
"In 1964 the modular synthesizer was born, and one of its signature components was the Voltage-Controlled Filter. While different oscillator shapes could create a bed of tone and harmonics, the Voltage-Controlled Filter allowed musicians to sculpt a distinct sound out of all those harmonics and even shape that sound over time. A key component in synthesizing existing sounds, the Voltage-Controlled Filter was also capable of creating sounds no one had ever heard before, giving birth to whole new genres of music and defining the sound of electronic music to this day."
You can find additional Synthesizing with Moog | Lesson posts here.
Roland JX-03 Demo
video upload by Panu M Savolainen
"Multitracked demo of Roland JX-03 botique. External fx Eventide Space and Waves delay used."
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MATRIXSYNTH - EVERYTHING SYNTH
© 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






























