Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"Original vintage SERVICED Yamaha DX1 in absolutely stunning, collector condition, perhaps the finest example extant. Only 140 of these digital monsters were ever produced, and this paragon is their queen.
She functions flawlessly. Every key, control, parameter and voice is 100%, and she sounds…. Just wow. So huge. So powerful. Scary deep."
Monday, January 12, 2026
S8jfou Peeps Music Box
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
You can find demos here.
"Inspired by the legendary Buchla Music Easel. Built by a guy who lives in a wooden cabin in the mountains! Here's his website () It's not really modular or patchable but there are some switches which are based on some of this guy's favourite patches on the Music Easel.
Features
2 Oscillators: First the Mod-Osc is a triangle-wave just a bit sinefolded. Second the Complex-Osc is a sine-wave with a powerful Wavefolder. Mod-Osc can modulate the
Complex-Osc and switch between FM & AM with depth for both. Both Oscillators can be Hard sync for FM synthesis. The Mod-Osc Pitch is bipolar & can go really low to act like an LFO. The Complex Pitch is unipolar. Both have Finetune for AM and not-synced FM harmonic research or perfectly tuning them together.
• 1 LFO Can be sine-wave or random sample&hold. Can act to the pitch of each oscillators & as the clock master for the sequencer.
•2 Lowpass gate One for the Mod Osc & second one for the Complex osc.
2 Lowpass filter One for the mod Osc & second one for the Complex osc.
• 1 Attack Applied to both Osc.
4 Step sequencer Can be set to each Osc & to the Wavefolder. Can run up or up&down. All step can be switched off.
• 2 Channel mixer One channel per oscillators.
• 1 Reverb With mix & time.
•1 Touch sensitive keyboard 13 keys with octave switch up & down which can act on each oscillators.
• 3 Touch plates With their own adjustable pitch.
• 1 Arpeggiator In order mode. Can be sustained, even on several switched octaves. Can be sync to the sequencer or have his own clock"
via this Reverb listing
You can find demos here.
"Inspired by the legendary Buchla Music Easel. Built by a guy who lives in a wooden cabin in the mountains! Here's his website () It's not really modular or patchable but there are some switches which are based on some of this guy's favourite patches on the Music Easel.Features
2 Oscillators: First the Mod-Osc is a triangle-wave just a bit sinefolded. Second the Complex-Osc is a sine-wave with a powerful Wavefolder. Mod-Osc can modulate the
Complex-Osc and switch between FM & AM with depth for both. Both Oscillators can be Hard sync for FM synthesis. The Mod-Osc Pitch is bipolar & can go really low to act like an LFO. The Complex Pitch is unipolar. Both have Finetune for AM and not-synced FM harmonic research or perfectly tuning them together.
• 1 LFO Can be sine-wave or random sample&hold. Can act to the pitch of each oscillators & as the clock master for the sequencer.
•2 Lowpass gate One for the Mod Osc & second one for the Complex osc.
2 Lowpass filter One for the mod Osc & second one for the Complex osc.
• 1 Attack Applied to both Osc.
4 Step sequencer Can be set to each Osc & to the Wavefolder. Can run up or up&down. All step can be switched off.
• 2 Channel mixer One channel per oscillators.
• 1 Reverb With mix & time.
•1 Touch sensitive keyboard 13 keys with octave switch up & down which can act on each oscillators.
• 3 Touch plates With their own adjustable pitch.
• 1 Arpeggiator In order mode. Can be sustained, even on several switched octaves. Can be sync to the sequencer or have his own clock"
MFB 522 Drumcomputer
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"This is a rare piece. Perfect condition, recently serviced. Mini 808, sounds great!"
via this Reverb listing
"This is a rare piece. Perfect condition, recently serviced. Mini 808, sounds great!"
RHS Band Moog Prodigy w/ Custom Space Theme Skinned Keyboard
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"This relic has seen some play in its day. Good condition considering the age. There are some cosmetic wear, signage, and the keys have been wrapped with a space graphic. One of the frame screws is missing but isn't structural."
via this Reverb listing
"This relic has seen some play in its day. Good condition considering the age. There are some cosmetic wear, signage, and the keys have been wrapped with a space graphic. One of the frame screws is missing but isn't structural."
Sunday, January 11, 2026
Crumar bit 01 black CEM3328, w/ Tauntek OS & Stereoping Controller
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"It has the CEM3328 filters, sounding great.
I have installed the Tauntek firmware, allowing realtime MIDI control, especially great with the included Stereoping Controller.
The Stereoping Controller has an overlay of the G8-P edition glued and the bit 01 overlay is only thrown above, which works top notch as is and makes it even easier to dust clean (I have some other editions overlays I may include for free if interested)."
via this Reverb listing
"It has the CEM3328 filters, sounding great.
I have installed the Tauntek firmware, allowing realtime MIDI control, especially great with the included Stereoping Controller.
The Stereoping Controller has an overlay of the G8-P edition glued and the bit 01 overlay is only thrown above, which works top notch as is and makes it even easier to dust clean (I have some other editions overlays I may include for free if interested)."
Dewanatron Swarmatron Synthesizer
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
via this Reverb listing
Modded Roland TR-909 Rhythm Composer
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"Incredible modified 909. This is the most unique 909 of the 3 I've owned. As you can see in the pic it has Tune Depth, Pitch and Drive for the Kick Drum as well as Hi Hat Tune. The range of what you can do with the Kick is almost unlimited, everything from super tight tuned variation to match the key of your track to absolutely depraved, distorted low end boom. The Hi Hat tune is just that, and between both of these mods they solve the main limitations of the 909."
via this Reverb listing
"Incredible modified 909. This is the most unique 909 of the 3 I've owned. As you can see in the pic it has Tune Depth, Pitch and Drive for the Kick Drum as well as Hi Hat Tune. The range of what you can do with the Kick is almost unlimited, everything from super tight tuned variation to match the key of your track to absolutely depraved, distorted low end boom. The Hi Hat tune is just that, and between both of these mods they solve the main limitations of the 909."
Saturday, January 10, 2026
Arturia Microfreak SN 5701400503220220
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
Additional CONTROL Listings
via this Reverb listing
Additional CONTROL Listings
Oberheim Xpander Desktop 6-Voice Synthesizer
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"The legend. The Xpander is absolutely one of the Top 10 synthesizers of all time. This machine is the sound of so many amazing records. Depeche Mode. Erasure. Nine Inch Nails. The Chemical Brothers. Orbital. The list goes on. It is also one of the most flexible synthesizers with patch memory ever made. It is truly modular with vast routing possibilities. And then there is the sound. Classic Oberheim attitude.
This machine is in very good condition and passes all tuning tests. Sounds absolutely amazing. Hard flight case included."
via this Reverb listing
"The legend. The Xpander is absolutely one of the Top 10 synthesizers of all time. This machine is the sound of so many amazing records. Depeche Mode. Erasure. Nine Inch Nails. The Chemical Brothers. Orbital. The list goes on. It is also one of the most flexible synthesizers with patch memory ever made. It is truly modular with vast routing possibilities. And then there is the sound. Classic Oberheim attitude.
This machine is in very good condition and passes all tuning tests. Sounds absolutely amazing. Hard flight case included."
Roland System 100m D-Set (112,121,130,140,150,191J)
Note: links to listings are affiliate links for which the site may be compensated.
video upload by Ian Nieman
via this Reverb listing
video upload by Ian Nieman
via this Reverb listing
White Skinned Roland Boutique Series TR-08 Analog Modeling Drum Machine
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"Unit is actually the black, normal version, with a white skin on top that can easily be taken off."
via this Reverb listing
"Unit is actually the black, normal version, with a white skin on top that can easily be taken off."
Akai AKAI ME30P Programmable MIDI Patchbay & S2000 MIDI Stereo Digital Sampler
Note: links to listings are affiliate links for which the site may be compensated.
via these listings
"Akai S200 Stereo Sampler [SN C9725-01403] with AKAI system boot disk and OG manual."
"Programmable midi patch bay/router. Works 100%"
via these listings
"Akai S200 Stereo Sampler [SN C9725-01403] with AKAI system boot disk and OG manual."
"Programmable midi patch bay/router. Works 100%"
Friday, January 09, 2026
1987 Roland TR-707 Rhythm Composer Drum Machine w/ M-64C Memory Cartridge SN 715716
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
Additional SYNTH CITY Listings
"Like a small handful of other sample based drum machines of the mid 1980s, the Roland TR-707 is a punchy beatbox which still has a home in an electronic musician's toolkit. The sounds all sit wonderfully in a mix to this day, and the individual outputs make this a great machine for the most particular of producers.
This unit has been thoroughly tested, includes the M-64C memory cartridge and non-original power supply."
via this Reverb listing
Additional SYNTH CITY Listings
"Like a small handful of other sample based drum machines of the mid 1980s, the Roland TR-707 is a punchy beatbox which still has a home in an electronic musician's toolkit. The sounds all sit wonderfully in a mix to this day, and the individual outputs make this a great machine for the most particular of producers.
This unit has been thoroughly tested, includes the M-64C memory cartridge and non-original power supply."
1980s Kawai R-100 Drum Machine w/ R-50e & R-50III Eprom Mod
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
Additional SYNTH CITY Listings
"1980's Kawai R100 drum machine, loaded with some of the best sounds Kawai offered from this era. Perfect for nailing that 80's industrial sound (ie; Wax Trax!, Ministry, KMFDM, etc).
Sound mod is a single switch on the front of the machine (switch between R-50e & R-50III sounds). Works like a charm, what a beast of a machine!"
via this Reverb listing
Additional SYNTH CITY Listings
"1980's Kawai R100 drum machine, loaded with some of the best sounds Kawai offered from this era. Perfect for nailing that 80's industrial sound (ie; Wax Trax!, Ministry, KMFDM, etc).
Sound mod is a single switch on the front of the machine (switch between R-50e & R-50III sounds). Works like a charm, what a beast of a machine!"
1974 Moog Minimoog Model D 44-Key Monophonic Synthesizer SM 4844
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
Additional SYNTH CITY Listings
"Early Minimoog, circa 1974, built in the Williamsville, NY factory. For its age and heritage it's tuning is very stable, and every thing is working properly. Well worn and loved, for good reason. This is one of the better Minimoogs' we've heard come through our doors. Serial No. 4844.
One of the most influential electronic instruments of the modern era.
Service notes:
-Replaced electrolytic capacitors
-Replaced (4) failed 'tropical fish' capacitors
-Repaired cracked solder connections throughout
-Removed, opened and cleaned several sealed control panel pots
-Cleaned switches and non-sealed potentiometers
-Replaced keybed bushings and reset key positions
-Cleaned buss bars and key contacts
-Cleaned keybed
-Cleaned pcb edge connectors and sockets
-Cleaned calibration trim pots
-Calibrated, ran for several hours then rechecked calibration
-Removed and cleaned sealed bender and modulation potentiometers
-Removed old remaining film from front panel"
via this Reverb listing
Additional SYNTH CITY Listings
"Early Minimoog, circa 1974, built in the Williamsville, NY factory. For its age and heritage it's tuning is very stable, and every thing is working properly. Well worn and loved, for good reason. This is one of the better Minimoogs' we've heard come through our doors. Serial No. 4844.
One of the most influential electronic instruments of the modern era.
Service notes:
-Replaced electrolytic capacitors
-Replaced (4) failed 'tropical fish' capacitors
-Repaired cracked solder connections throughout
-Removed, opened and cleaned several sealed control panel pots
-Cleaned switches and non-sealed potentiometers
-Replaced keybed bushings and reset key positions
-Cleaned buss bars and key contacts
-Cleaned keybed
-Cleaned pcb edge connectors and sockets
-Cleaned calibration trim pots
-Calibrated, ran for several hours then rechecked calibration
-Removed and cleaned sealed bender and modulation potentiometers
-Removed old remaining film from front panel"
E-MU Systems Drumulator with Drum Pad Programmer System
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"This classic drum machine / sampler is in near mint condition and is accompanied by it’s super rare drum pad attachment for triggering sounds. Both have been newly serviced with a new power supply."
via this Reverb listing
"This classic drum machine / sampler is in near mint condition and is accompanied by it’s super rare drum pad attachment for triggering sounds. Both have been newly serviced with a new power supply."
Thursday, January 08, 2026
Aion Modular Model 15 Modular Synthesizer
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"The Aion Modular Model 15 provides everything you need for a Moog-style modular system in a Eurorack format. The filter section, the backbone of the Moog modular, includes both the classic low pass filter, passive lowpass and high pass, and a fixed filter bank, providing a myriad of sound sculpting possibilities. Three oscillators are available, two from the voltage controlled oscillator bank and another from the wide ranging voltage controlled oscillator. In addition, two noise sources, white and pink are present for adding texture or a touch of unpredictability. Two classic ADSR envelopes provide modulation and are perfectly paired with the two VCAs or with the filters. Two four channel CP-1 mixers are present at the bottom of the Model 15, which can be used to both mix channels and add pleasant warmth to them. In addition to all this analog goodness, a MIDI to CV/gate converter is included to sequence the Model 15 from external MIDI devices. The Model 15 brings the classic parts of a modular synthesizer into one package that sounds just as rich as the original
Model 15 Features
Modular system
Moog-style design
Two 902 VCAs
907A Fixed Filter Bank
904A Voltage Controlled Low Pass Filter
Two 911 Envelope Generators
921ABB Voltage Controlled Oscillator Bank
921 Voltage Controlled Oscillator
955 Attenuators
923 Noise/Filters
Two CP3 Mixers
MIDI to CV converter
Case includes lid and carrying handle"
via this Reverb listing
"The Aion Modular Model 15 provides everything you need for a Moog-style modular system in a Eurorack format. The filter section, the backbone of the Moog modular, includes both the classic low pass filter, passive lowpass and high pass, and a fixed filter bank, providing a myriad of sound sculpting possibilities. Three oscillators are available, two from the voltage controlled oscillator bank and another from the wide ranging voltage controlled oscillator. In addition, two noise sources, white and pink are present for adding texture or a touch of unpredictability. Two classic ADSR envelopes provide modulation and are perfectly paired with the two VCAs or with the filters. Two four channel CP-1 mixers are present at the bottom of the Model 15, which can be used to both mix channels and add pleasant warmth to them. In addition to all this analog goodness, a MIDI to CV/gate converter is included to sequence the Model 15 from external MIDI devices. The Model 15 brings the classic parts of a modular synthesizer into one package that sounds just as rich as the original
Model 15 Features
Modular system
Moog-style design
Two 902 VCAs
907A Fixed Filter Bank
904A Voltage Controlled Low Pass Filter
Two 911 Envelope Generators
921ABB Voltage Controlled Oscillator Bank
921 Voltage Controlled Oscillator
955 Attenuators
923 Noise/Filters
Two CP3 Mixers
MIDI to CV converter
Case includes lid and carrying handle"
Analogue Solutions Red Square
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"Not the Colossus but also not for ants. This semi-modular analog Synth is patched with 6,3mm (1/4') cables like his Moog or 4U cousins. Unlike them it can also be played via MIDI. The Red Square can also process external signals with an input at the front as well as two inputs on the back, hence the 'patchable analogue effects processor' moniker."
via this Reverb listing
"Not the Colossus but also not for ants. This semi-modular analog Synth is patched with 6,3mm (1/4') cables like his Moog or 4U cousins. Unlike them it can also be played via MIDI. The Red Square can also process external signals with an input at the front as well as two inputs on the back, hence the 'patchable analogue effects processor' moniker."
Wednesday, January 07, 2026
Moog Music - MF-108M Cluster Flux Original Manual
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing, also on eBay
See the seller's other listing for additional items.
"Original MF-108M Cluster Flux Original Manual from 2011."
via this Reverb listing, also on eBay
See the seller's other listing for additional items.
"Original MF-108M Cluster Flux Original Manual from 2011."
Korg Electribe-MX EMX-1 Music Production Station
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"Fully tested and in excellent working condition. Includes original power supply and SmartMedia card."
Additional SYNTH CITY Listings
via this Reverb listing
"Fully tested and in excellent working condition. Includes original power supply and SmartMedia card."
Additional SYNTH CITY Listings
NEXT PAGE
HOME
© 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
© 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











































