via this eBay listing
"This is a one of kind RARE MOOG 4 Track. There were very few made. This one turns on but I don't have a way of testing out its full functionality."
Wednesday, March 25, 2026
RARE MOOG Four Track track tape machine one of a kind!
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
"This is a one of kind RARE MOOG 4 Track. There were very few made. This one turns on but I don't have a way of testing out its full functionality."
via this eBay listing
"This is a one of kind RARE MOOG 4 Track. There were very few made. This one turns on but I don't have a way of testing out its full functionality."
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, exclusive, exclusive2026, MOOG, New Old
LABELS/MORE: Auctions, exclusive, exclusive2026, MOOG, New Old
Roland System 700 Block 1 (main unit)
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.
"Roland System 700 Main Unit / Block 1 Very rare and a truly amazing synthesiser. Excellent cosmetic condition and working order. With its lid. 230V"
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"Roland System 700 Main Unit / Block 1 Very rare and a truly amazing synthesiser. Excellent cosmetic condition and working order. With its lid. 230V"
EMS Synthi AKS _vintage 100% serviced
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 pic of the inside below.
EMS Synthi AKS!
* Vintage original. Fully serviced and restored! *
Original Synthi from the 70's with KS keyboard sequencer & cables.
The Synthi and KS have been together from new so they have matching serial numbers.
Recently serviced by specialized EMS tech. Ready for another future!
Nice condition. See pictures and make sure to click 'expand' and scroll for full detail.
Just ask if you'd like larger pictures or details.
Here's a list of the mods and extensive work done:
--------------------------------------
Caps replaced
Trimmers replaced
Vernier dials replaced : 3x
Envelope lamp replaced
Filter slew/unslew (push-pull)
Trapezoid polarity switch
VC Waveshape of Osc 1 and 2 via reverb mix column
Osc sync 3x + sync amount pots
Osc3 hi/lo range
Portamento
KS service
Calibrated
--------------------------------------
Fully working and technically great original Synthi AKS. This is a real instrument!
The recap, new trimmers and verniers should keep it going smooth for many years.
The very useful mods like Osc sync, portamento, envelope ±, controlled waveshape make it so much more versatile! Filter slew/unslew also a must on Synthi's. :)"
via this Vemia listing
Click the auction link on top when you get there for additional listings.
One pic of the inside below.
EMS Synthi AKS!* Vintage original. Fully serviced and restored! *
Original Synthi from the 70's with KS keyboard sequencer & cables.
The Synthi and KS have been together from new so they have matching serial numbers.
Recently serviced by specialized EMS tech. Ready for another future!
Nice condition. See pictures and make sure to click 'expand' and scroll for full detail.
Just ask if you'd like larger pictures or details.
Here's a list of the mods and extensive work done:
--------------------------------------
Caps replaced
Trimmers replaced
Vernier dials replaced : 3x
Envelope lamp replaced
Filter slew/unslew (push-pull)
Trapezoid polarity switch
VC Waveshape of Osc 1 and 2 via reverb mix column
Osc sync 3x + sync amount pots
Osc3 hi/lo range
Portamento
KS service
Calibrated
--------------------------------------
Fully working and technically great original Synthi AKS. This is a real instrument!
The recap, new trimmers and verniers should keep it going smooth for many years.
The very useful mods like Osc sync, portamento, envelope ±, controlled waveshape make it so much more versatile! Filter slew/unslew also a must on Synthi's. :)"
EMS Synthi A
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.
"A brand new Synthi A. Shipped Dec 2024 by EMS Cornwall after 4 years on the waiting list. Mods done by Robin Wood of EMS: - Oscillator stabilisation on Osc. 3 - Dual transistor upgrade for Osc3 if Hi/lo fitted - Oscillator Sync on Osc2 – variable with depth pot - VC Shape fitted to Osc2 and Osc3 - Hi/Lo frequency range - switchable (on all three oscillators) - X10 Envelope Attack/Decay time multiplier - 10-turn pot on Input Channel 1 - Centre-zero trapezoid - Patchable voltage inverter - Filter unslew switchable - Papageorgiadis Sample & Hold Built in a (vintage) Spartanite case (+ matching keys) and including all EMS documents (manual, invoice)."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"A brand new Synthi A. Shipped Dec 2024 by EMS Cornwall after 4 years on the waiting list. Mods done by Robin Wood of EMS: - Oscillator stabilisation on Osc. 3 - Dual transistor upgrade for Osc3 if Hi/lo fitted - Oscillator Sync on Osc2 – variable with depth pot - VC Shape fitted to Osc2 and Osc3 - Hi/Lo frequency range - switchable (on all three oscillators) - X10 Envelope Attack/Decay time multiplier - 10-turn pot on Input Channel 1 - Centre-zero trapezoid - Patchable voltage inverter - Filter unslew switchable - Papageorgiadis Sample & Hold Built in a (vintage) Spartanite case (+ matching keys) and including all EMS documents (manual, invoice)."
Future Retro Revolution Analog Synthesizer + Sequencer (White Model)
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
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, Future Retro, Perfect Circuit
LABELS/MORE: Auctions, Future Retro, Perfect Circuit
Mattel Synsonics Drums Performance Drum Machine
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
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, Mattel, Perfect Circuit, Synsonics
LABELS/MORE: Auctions, Mattel, Perfect Circuit, Synsonics
SEQUENTIAL TRIGON-6 POLYPHONIC ANALOGUE SYNTH (DESKTOP)
Note: links to listings are affiliate links for which the site may be compensated.
via this listing
Additional Signal Sounds listings
"We say...
A pre-owned Sequential Trigon-6 in very good condition. It comes with original packaging and power cable
Manufacturer's description
Experience the Power of Three Oscillators and a Ladder Filter with the Trigon-6 Module
The Sequential Trigon-6 desktop module delivers the same massive sound and hands-on sonic control as the Trigon-6 Keyboard. It features the same pure analog signal path with discrete oscillators and filters, and the same high-quality digital effects. It also has the same intuitive layout with full-sized knobs and switches that make it quick and easy to shape new sounds.
The Trigon-6 module sounds huge — just like the keyboard, because it is the same six voice polyphonic instrument, just in a smaller form factor. And if you want even more polyphony, you can use the poly chain feature to link any two Trigon-6s for a stunning twelve-voice synth!
A Sound That is Bold and Familiar
The Trigon-6 is Sequential’s polyphonic take on the classic, thick and creamy, 3-oscillator-plus-ladder-filter analog sound that defined the dawn of the synth era. It’s a sound that bridges genres and styles — now refined and redefined with Sequential’s own modern imprint.
via this listing
Additional Signal Sounds listings
"We say...
A pre-owned Sequential Trigon-6 in very good condition. It comes with original packaging and power cable
Manufacturer's description
Experience the Power of Three Oscillators and a Ladder Filter with the Trigon-6 Module
The Sequential Trigon-6 desktop module delivers the same massive sound and hands-on sonic control as the Trigon-6 Keyboard. It features the same pure analog signal path with discrete oscillators and filters, and the same high-quality digital effects. It also has the same intuitive layout with full-sized knobs and switches that make it quick and easy to shape new sounds.
The Trigon-6 module sounds huge — just like the keyboard, because it is the same six voice polyphonic instrument, just in a smaller form factor. And if you want even more polyphony, you can use the poly chain feature to link any two Trigon-6s for a stunning twelve-voice synth!
A Sound That is Bold and Familiar
The Trigon-6 is Sequential’s polyphonic take on the classic, thick and creamy, 3-oscillator-plus-ladder-filter analog sound that defined the dawn of the synth era. It’s a sound that bridges genres and styles — now refined and redefined with Sequential’s own modern imprint.
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, Sequential, Signal Sounds
LABELS/MORE: Auctions, Sequential, Signal Sounds
OBERHEIM OB-X8 POLYPHONIC ANALOGUE SYNTHESISER (DESKTOP)
Note: links to listings are affiliate links for which the site may be compensated.
via this listing
Additional Signal Sounds listings
"We say...
A pre-owned Oberheim OB-X8 (Desktop) in very good condition. It comes with original packaging and power cable.
Manufacturer's description
NEW functionality now available with OB-X8 OS v2.0 featuring:
Instant binaural mode pans individual voices hard left and right for true stereo operation
Simultaneously selectable waveshapes for each oscillator extends timbral variety
New 4-Pole low pass filter type with fuller bass at high resonance
New VCO 1 and 2 level LFO modulation destinations for independent timbral mixing
Arpeggiator clock sync now has selectable note division values for expanded rhythmic control
Twice the Split and Double memory locations, including program storage directly in the new banks for 512 more stored sounds
Separate MIDI channels for lower/upper split bi-timbral operation
Poly chain for up to 32 voices with 4 connected instruments
MPE for new levels of expressiveness
via this listing
Additional Signal Sounds listings
"We say...
A pre-owned Oberheim OB-X8 (Desktop) in very good condition. It comes with original packaging and power cable.
Manufacturer's description
NEW functionality now available with OB-X8 OS v2.0 featuring:
Instant binaural mode pans individual voices hard left and right for true stereo operation
Simultaneously selectable waveshapes for each oscillator extends timbral variety
New 4-Pole low pass filter type with fuller bass at high resonance
New VCO 1 and 2 level LFO modulation destinations for independent timbral mixing
Arpeggiator clock sync now has selectable note division values for expanded rhythmic control
Twice the Split and Double memory locations, including program storage directly in the new banks for 512 more stored sounds
Separate MIDI channels for lower/upper split bi-timbral operation
Poly chain for up to 32 voices with 4 connected instruments
MPE for new levels of expressiveness
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, Oberheim, Signal Sounds
LABELS/MORE: Auctions, Oberheim, Signal Sounds
ROLAND SH-09 SYNTHESIZER SN 983105
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
"IT HAS JUST BEEN FULLY INSPECTED/SERVICED AND IS READY FOR A NEW HOME!
The following services were just done, which cost us over $650!
IF you find another one for less than what ours is selling for, and since most of the used ones out there, that are supposed to be "fully functional", turn out NOT to be; you will then need to find someone who would work on these (which is very hard nowadays), and then who knows how much it would cost to make it fully functional??! CONDITION IS EVERYTHING!
SERVICES DONE:
Full inspection
Load tested for 2 hours
Entire keybed completely taken apart, fully serviced, lubricate, and restored. So it triggers like a new one once more.
Volume POT serviced
Joystick serviced/restored
Power switch serviced/restored
All sliders fully serviced/restored
All outputs serviced
All knob switches serviced
All switches fully serviced
All contacts cleaned
Cleaned inside and out
Originally (in late 70s) it sold for $795, which in today’s money it mounts to over $3700!!! So, at this price, and in this condition; IT IS A BARGAIN!!!"
via this eBay listing
"IT HAS JUST BEEN FULLY INSPECTED/SERVICED AND IS READY FOR A NEW HOME! The following services were just done, which cost us over $650!
IF you find another one for less than what ours is selling for, and since most of the used ones out there, that are supposed to be "fully functional", turn out NOT to be; you will then need to find someone who would work on these (which is very hard nowadays), and then who knows how much it would cost to make it fully functional??! CONDITION IS EVERYTHING!
SERVICES DONE:
Full inspection
Load tested for 2 hours
Entire keybed completely taken apart, fully serviced, lubricate, and restored. So it triggers like a new one once more.
Volume POT serviced
Joystick serviced/restored
Power switch serviced/restored
All sliders fully serviced/restored
All outputs serviced
All knob switches serviced
All switches fully serviced
All contacts cleaned
Cleaned inside and out
Originally (in late 70s) it sold for $795, which in today’s money it mounts to over $3700!!! So, at this price, and in this condition; IT IS A BARGAIN!!!"
Vintage UNIVOX MINI-KORG SN 2548
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
via this eBay listing
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
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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
