Friday, March 27, 2026
⌬ SÉANCE W/ POLYGENE II ⌬
video upload by Somnambule
"Hi folks!
I invite you to a séance with the #polygene II @genesynths
A slow-moving séance through shifting textures and obscure harmonics.
This ambient session with the Pogene II drifts between fragile tones and evolving atmospheres, dissolving structure into something hypnotic and otherworldly.
Headphones recommended.🖖
No audio postproduction"
Very early Synthi A -1971! s/n 4118
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.
Pic of the inside below.
"This auction is for an original 1971 Mk1 EMS Synthi A synthesiser, serial number 4118, in its Spartanite case. The case has a few marks and scratches as befitting a 55 year old instrument, but no chips or breaks. The latches, although showing some corrosion, work perfectly.
The Synthi front panel is one of the cleanest we’ve seen, being almost immaculate with virtually no panel marks and, unusually, no writing or marking absent or worn from the screen printing. In addition this example comes with the early chrome mirror finish knobs.
The internals are extremely clean and original with no modifications (see photo#4 now under the wrong thumbnail) and the unit has the genuine GE PA234 audio amplifier devices for the outputs and reverb.
The unit has been fully tested by one of the three or four people in the world who can call themselves EMS experts. It has been aligned and found to be working perfectly, and consequently given the original condition of the unit, no capacitors have been replaced. The original ones are working fine and show no signs of leakage or decay. However while the existing pots are electrically good with no scratchiness, some are a mechanically stiffer than current production models and the buyer might wish to have these replaced. This can be done at additional cost either here in the UK by EMS experts Lucid or by the buyer’s own engineer.
The Synthi comes with a full set of 20 patch pins and a new UK 240VAC mains lead (not shown). (Observant viewers may notice the absence of the usual Synthi A plastic name plate which usually adorns the outer case. This isn’t missing, but was simply never fitted as there are no holes for it, perhaps because of the early serial number. In addition the rear case is attached by four factory fitted screws and bushings, rather than the more usual arrangement of three)."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
Pic of the inside below.
"This auction is for an original 1971 Mk1 EMS Synthi A synthesiser, serial number 4118, in its Spartanite case. The case has a few marks and scratches as befitting a 55 year old instrument, but no chips or breaks. The latches, although showing some corrosion, work perfectly.The Synthi front panel is one of the cleanest we’ve seen, being almost immaculate with virtually no panel marks and, unusually, no writing or marking absent or worn from the screen printing. In addition this example comes with the early chrome mirror finish knobs.
The internals are extremely clean and original with no modifications (see photo#4 now under the wrong thumbnail) and the unit has the genuine GE PA234 audio amplifier devices for the outputs and reverb.
The unit has been fully tested by one of the three or four people in the world who can call themselves EMS experts. It has been aligned and found to be working perfectly, and consequently given the original condition of the unit, no capacitors have been replaced. The original ones are working fine and show no signs of leakage or decay. However while the existing pots are electrically good with no scratchiness, some are a mechanically stiffer than current production models and the buyer might wish to have these replaced. This can be done at additional cost either here in the UK by EMS experts Lucid or by the buyer’s own engineer.
The Synthi comes with a full set of 20 patch pins and a new UK 240VAC mains lead (not shown). (Observant viewers may notice the absence of the usual Synthi A plastic name plate which usually adorns the outer case. This isn’t missing, but was simply never fitted as there are no holes for it, perhaps because of the early serial number. In addition the rear case is attached by four factory fitted screws and bushings, rather than the more usual arrangement of three)."
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, EMS, synth guts, VEMIA
LABELS/MORE: Auctions, EMS, synth guts, VEMIA
Three Phutney EMS clone PCBs, Tuned
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.
"Set of Three Phutney PCB Cards – EMS VCS3 / Synthi A Clone A set of three fully built Phutney PCB cards for the EMS VCS3 / Synthi A. These are the highly regarded clone boards designed by Derek Revell, widely considered among the most accurate reproductions available for anyone wishing to recreate one of these classic synthesizers, or to replace cards in an original EMS instrument.
The boards were professionally assembled by an experienced audio engineer, using new old stock germanium and silicon transistors to get as close as possible to the character of the original EMS circuitry.
They have been extensively tested and calibrated in my 1975 EMS Synthi AKS. My original intention was to use them to build a VCS3 “Cloney”-style synth, but that project never materialised.
During testing, resistor values were carefully adjusted until the cards performed and sounded indistinguishable from the original EMS circuit boards.
The sale also includes: • Header and PCB solder-in edge connectors to simplify wiring during a build • A set of blue edge connectors with solder tags if you prefer the more traditional “old-school” wiring approach
All three boards are fully populated, tested, and confirmed working. As mentioned, they were bench-tested and run inside a working EMS Synthi AKS, allowing direct comparison with original EMS cards during calibration.
If you are planning to build a vintage EMS-style synthesizer, this is an excellent starting point, as the boards are already assembled, tested, and carefully tuned to match the performance and sound of a 1975 Synthi A / VCS3."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"Set of Three Phutney PCB Cards – EMS VCS3 / Synthi A Clone A set of three fully built Phutney PCB cards for the EMS VCS3 / Synthi A. These are the highly regarded clone boards designed by Derek Revell, widely considered among the most accurate reproductions available for anyone wishing to recreate one of these classic synthesizers, or to replace cards in an original EMS instrument.
The boards were professionally assembled by an experienced audio engineer, using new old stock germanium and silicon transistors to get as close as possible to the character of the original EMS circuitry.
They have been extensively tested and calibrated in my 1975 EMS Synthi AKS. My original intention was to use them to build a VCS3 “Cloney”-style synth, but that project never materialised.
During testing, resistor values were carefully adjusted until the cards performed and sounded indistinguishable from the original EMS circuit boards.
The sale also includes: • Header and PCB solder-in edge connectors to simplify wiring during a build • A set of blue edge connectors with solder tags if you prefer the more traditional “old-school” wiring approach
All three boards are fully populated, tested, and confirmed working. As mentioned, they were bench-tested and run inside a working EMS Synthi AKS, allowing direct comparison with original EMS cards during calibration.
If you are planning to build a vintage EMS-style synthesizer, this is an excellent starting point, as the boards are already assembled, tested, and carefully tuned to match the performance and sound of a 1975 Synthi A / VCS3."
ARP 2600 mod 2601, MIDI & 3620
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.
"Arp 2600 with Kenton MIDI From the mid-1970’s, around 1974-76. It has had a full service in September 2025 by Dani at Hideaway. Some time in its history, it has been modified for the installation of the Kenton MIDI kit. Both the 2600 and the 3620 have their lids. The keyboard lead is attached to the keyboard.
UK voltage. Serial number 2601-0091.
VEMIA can collect and pack: 36GBP."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"Arp 2600 with Kenton MIDI From the mid-1970’s, around 1974-76. It has had a full service in September 2025 by Dani at Hideaway. Some time in its history, it has been modified for the installation of the Kenton MIDI kit. Both the 2600 and the 3620 have their lids. The keyboard lead is attached to the keyboard.
UK voltage. Serial number 2601-0091.
VEMIA can collect and pack: 36GBP."
TTSH original ARP 2600 Clone
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 really beautiful example of the original clone (if such a thing is possible) of the ARP 2600. Pro-built, best components, magnetically shielded speakers, large reverb tank, and all in a seriously beautiful case.
The case was made by Low-Gain Electronics / MonoRocket, and has not been in production for a long time. This one was bought new in 2016 by a well-known modular synth maker but not used until after it Ithe case) was sold on VEMIA in 2020 (for over 400GBP plus shipping).
The TTSH is rev 2.4. It has been thoroughly checked for this auction, and is in full working order with a couple of quirks (similar to the original 2600s): some VCO and clock bleed, only noticeable on close listening - and which the designers say many users never notice. Packing 18GBP."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"A really beautiful example of the original clone (if such a thing is possible) of the ARP 2600. Pro-built, best components, magnetically shielded speakers, large reverb tank, and all in a seriously beautiful case.The case was made by Low-Gain Electronics / MonoRocket, and has not been in production for a long time. This one was bought new in 2016 by a well-known modular synth maker but not used until after it Ithe case) was sold on VEMIA in 2020 (for over 400GBP plus shipping).
The TTSH is rev 2.4. It has been thoroughly checked for this auction, and is in full working order with a couple of quirks (similar to the original 2600s): some VCO and clock bleed, only noticeable on close listening - and which the designers say many users never notice. Packing 18GBP."
Roland JD-990 Super JD Multi-Timbral Digital Synthesizer SN ZE81761
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, Perfect Circuit, Roland
LABELS/MORE: Auctions, Perfect Circuit, Roland
Roland Alpha Juno-1 Analog Keyboard Synthesizer
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, Perfect Circuit, Roland
LABELS/MORE: Auctions, Perfect Circuit, Roland
Dave Smith Instruments TETR4 Analog Desktop Synthesizer
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, DSI, Perfect Circuit
LABELS/MORE: Auctions, DSI, Perfect Circuit
Elektron Machinedrum
video upload by Akihiko Matsumoto
"Machinedrum Sample Pack
https://akihikomatsumoto.sellfy.store...
The Elektron Machinedrum, first introduced in the early 2000s, was not simply a drum machine. It was a digital architecture built to generate percussion with surgical precision and metallic sharpness. Its synthesis models produced results that went beyond drum programming, moving into the territory of sound design. Even today, no software plugin has managed to fully replicate its distinctive texture.
This collection captures that uniqueness. Every sample was recorded directly from the Machinedrum itself. No external processing, no layering. What you hear is the circuitry of early Elektron design, distilled into one-shots that highlight the instrument’s raw identity."
Roland TR-1000 "Melodic Mode"
video upload by Maffez Synthmods
"So the idea is to fake a chromatic mode by making a sound and copying it across all instruments, then tuning these chromatically. Kinda roundabout workflow and not quite as easy as yours truly in front of an ice cream vendor, but this way the TR1000 can do polyphonic VA, FM, PCM, and even Cowbell Synth :) trwo in some morphing slider action and you get realtime sound control too!"
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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
