Showing posts sorted by date for query spotted and sent in via M Me. Sort by relevance Show all posts
Showing posts sorted by date for query spotted and sent in via M Me. Sort by relevance Show all posts
Wednesday, June 17, 2026
OBERHEIM FVS w/ Custom Patch Panel by Analog Sweden
This one was spotted and sent in via
M Me.
"Vintage Oberheim FVS-1 (Analog Sweden patchbay mod!!)
Fully functional.
It is a fully functional and—aside from the mod—completely original Oberheim 4-Voice FVS-1.
It was modified by the geniuses at Analog Sweden to be "fully patchable," but the original output board (including the faceplate) is tucked away inside the synth, so it can be restored to its original state if desired!"
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Analog Sweden, custom, Oberheim
LABELS/MORE: Analog Sweden, custom, Oberheim
Tuesday, June 09, 2026
COMPUTALKER SPEECH SYNTHESIZER

You can find a demo of COMPUTALKER in this previous post from back in 2008.
Here are some pics and additional info on the COMPUTALKER via this reddit thread where you'll find a dropbox link to additional docs including some source code. Note the poster on reddit is looking for help on gettig it going. If you can help, reach out there.
This one was spotted and sent in via
M Me who also found some addtional info here.
From the reddit thread:
"The Computalker CT-1 was one of the earliest commercially available speech synthesizers for personal computers. Introduced in late 1976 and shipped beginning in 1977, it was developed by D. Lloyd Rice and Jim Cooper in Santa Monica, California through their company, Computalker Consultants.
Unlike simpler speech devices that played back recorded sounds, the CT-1 was a 9-parameter formant speech synthesizer. A host computer generated control data describing pitch, formant frequencies, fricatives, aspiration, and other speech characteristics, while the CT-1 generated the actual voice waveform in hardware."
"My goal, (which I do think may end up being completely impossible) is to get this up and running and hear it speak. Among the photos, there are some shots of the inside. I understand that this was originally designed for the S-100 bus going as far back as the Altair 8800. Serial number inside and out is 7001 and I can see that a previous owner likely replaced the older capacitors already.
This variant however, In all my searching I cannot seem to find a single reference to anywhere. My best guess with the information I have is that this could be a prototype version that was meant for later computers and perhaps it's missing some type of interface card for maybe an Apple II or TRS-80?
Here is a dropbox link to all of the information I have collected so far. I have found the manual, the software manual (With source code?!) and all sorts of little information. Also there's a lot more photos....
https://www.dropbox.com...
Maybe someone out there has seen this before? I am super excited to keep collecting information on this! Thank you for checking this out!"
Some pics of the inside below.
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Computalker, exclusive, exclusive2026, Speech Synthesis, synth guts
LABELS/MORE: Computalker, exclusive, exclusive2026, Speech Synthesis, synth guts
Tuesday, June 02, 2026
Emu SP1200 & SP12 OTBElec SP MIDI Interface w/ Original Box
via this eBay listing
Here's an interesting device from the recent past. According to the listing details below the final batch came out in 2017. It's from OTBElec and this appears to be the first post to feature them on the site. The www.otbelec.com website is no longer live.
This one was spotted and sent in via
M Me.

via the listing: "I bought this new & it was part of the final batch made in 2017. I stored it away because my SP12 required servicing & the interface subsequently was never used (or even unwrapped). This may be the only brand new OTB MIDI in existence.
"The SP MIDI converts non-standard MIDI messages from the SP-1200 to regular MIDI. One such message is note off, which is required to set the length or duration of sequenced notes. The SP MIDI also translates the pitches of bank D to a continuous range of notes to store and sequence external devices. When recording it is necessary to set rec mode.
Internal mode is used to select up to three samples which then have their 16 pitch levels mapped out over the keyboard. Now supporting note off you can play like you would normally expect, where the sample mutes when the key is released. Excellent for looped samples, i.e. bass lines.
External mode is used to sequence other instruments. It uses bank D1-D6 to record notes on one MIDI channel and D7-D8 on another channel. D1-D6 is mapped to a full note range by pad number and pitch, making it possible to play a melody using the pads. Also note off is sent as you hit the pads a second time, unless F1 oneshot is selected. D7-D8 is combined together to give a full range of note numbers and is best used with a keyboard.
Dynamic velocity is maintained, if not Full Level is selected.
The SP MIDI firmware can be updated using a computer with a MIDI interface.
These features also allow pitching and using the loop function on a S950."
Sunday, May 31, 2026
AKAI MPC3000 SP Custom
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
Also see this one with a custom Overdub button & wood frame.
via this eBay listing
This one was spotted and sent in via
M Me.
Also see this one with a custom Overdub button & wood frame.
Friday, May 29, 2026
Vintage Yamaha DX7 Synthesizer Keyboard Keychain 1986
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
via this eBay listing
This one was spotted and sent in via
M Me.
Sunday, May 03, 2026
LCD 647B Loop Maker
Note: links to listings are affiliate links for which the site may be compensated.
video upload by bogushokus1980
Note the video above is from 17 years ago. The listing below was spotted and sent in via M Me.
It was also available in Red:
loop maker toys by struktur. beat square
video upload by flao raphael
via this eBay listing
"We are offering this super rare LCD 647B Loop Maker, a truly unique and hard-to-find vintage electronic instrument designed for beat creation, sequencing, and hands-on performance πΆπ₯
This is not just a simple loop player ❌
It’s a programmable drum machine & sequencer that lets you edit individual rhythm parts and shape your grooves in detail.
✨ Special Features:
• π️ Full rhythm programming & editing
• π§ Built-in scratch wheel function for DJ-style effects
• π Deep, bass-heavy, highly distinctive sound
• πΉ Built-in speaker for standalone use
• π️ Audio input for extra creative possibilities"
video upload by bogushokus1980
Note the video above is from 17 years ago. The listing below was spotted and sent in via M Me.
It was also available in Red:
loop maker toys by struktur. beat square
video upload by flao raphael
via this eBay listing
"We are offering this super rare LCD 647B Loop Maker, a truly unique and hard-to-find vintage electronic instrument designed for beat creation, sequencing, and hands-on performance πΆπ₯
This is not just a simple loop player ❌
It’s a programmable drum machine & sequencer that lets you edit individual rhythm parts and shape your grooves in detail.
✨ Special Features:
• π️ Full rhythm programming & editing
• π§ Built-in scratch wheel function for DJ-style effects
• π Deep, bass-heavy, highly distinctive sound
• πΉ Built-in speaker for standalone use
• π️ Audio input for extra creative possibilities"
Roland TR 606 / TR 608 / TR 808 Mod
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
One was previously listed on Vemia.
"Modified Roland TR-606 / by Filippo Samore / TR-608 > as used by Hainbach on YT [posted here].
The TR-606 in 808 territory and beyond, with tuning, decay and tone mods.
' This Drummachine is on a another level and is a lot of fun (you become very creative) '
' The mod is high-quality and truly enhances the sound engine of the 606
without compromising its handy form factor. It is almost like a TR-808 now,
except maybe a little more interesting, because it is still a charmingly shuffling 606 at its core.'
Examples:
Visit the phunkydesk dot com Domain / > the files after the slash (/) are as follows:
608_BD.wav, Loop1.wav, Loop2.wav
(there is no distortion/overdrive or clipping converters!)
The main modification in this revisited classic is the complete redesign of the kick drum circuit
with a lot of borrowed technology from the 808!
+ Kick: Tune, env Control, tone and decay.
You can also send the kick through the second output separately!
+ The Kick can also have "almost infinite" decay
+ Snare: same borrowed technology from the 808 but with an improved decay length.
It gives access to tune, snappy and decay.
+ L.H Toms: Tune independent from each other and cuts out the annoying noise present in their circuit.
+ Hi-Hats: Tune and decay, separate for both open and closed hats
++ Original Roland TR 606 carrying case
++ Device is serviced (while Mod)
++ Device checked in endurance test
(Batteries or the 9V TR-606 power supply)"
via this eBay listing
This one was spotted and sent in via
M Me.
One was previously listed on Vemia.
"Modified Roland TR-606 / by Filippo Samore / TR-608 > as used by Hainbach on YT [posted here].
The TR-606 in 808 territory and beyond, with tuning, decay and tone mods.
' This Drummachine is on a another level and is a lot of fun (you become very creative) '
' The mod is high-quality and truly enhances the sound engine of the 606
without compromising its handy form factor. It is almost like a TR-808 now,
except maybe a little more interesting, because it is still a charmingly shuffling 606 at its core.'
Examples:
Visit the phunkydesk dot com Domain / > the files after the slash (/) are as follows:
608_BD.wav, Loop1.wav, Loop2.wav
(there is no distortion/overdrive or clipping converters!)
The main modification in this revisited classic is the complete redesign of the kick drum circuit
with a lot of borrowed technology from the 808!
+ Kick: Tune, env Control, tone and decay.
You can also send the kick through the second output separately!
+ The Kick can also have "almost infinite" decay
+ Snare: same borrowed technology from the 808 but with an improved decay length.
It gives access to tune, snappy and decay.
+ L.H Toms: Tune independent from each other and cuts out the annoying noise present in their circuit.
+ Hi-Hats: Tune and decay, separate for both open and closed hats
++ Original Roland TR 606 carrying case
++ Device is serviced (while Mod)
++ Device checked in endurance test
(Batteries or the 9V TR-606 power supply)"
Tuesday, April 21, 2026
Spectrum Shifter Surrey Electronics Phazing Unit RARE Studio Gear Frequency FX
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
It appears to have an original red Surrey Electronics case, compared to this racked one. You'll find a spec sheet there as well.
"Surrey Electronics Spectrum Shifter
Uses the same principle as Bode frequency shifter. Ostensibly for 'Howl Reduction' but capable of some very interesting effects. Essentially, unlike a pitch shifter, a frequency shifter does not preserve the harmonic relationships in the input signal. In practice this means the output quickly starts to deviate from what is going in and extra tones are added which then interact and interfere with the source producing new harmonics and drones. Very good with other fx. Great studio addition as you can plug allsorts in not just for vocals.
31cm x 27cm x 24cm
240v unit
Mono input and output via 1/4" jacks on the rear. (standard 'guitar' Jacks)
some scuffs and slider plastic is missing, did not replace as does not affect use. See photos."
This one was spotted and sent in via
M Me.
via this eBay listing
It appears to have an original red Surrey Electronics case, compared to this racked one. You'll find a spec sheet there as well.
"Surrey Electronics Spectrum Shifter
Uses the same principle as Bode frequency shifter. Ostensibly for 'Howl Reduction' but capable of some very interesting effects. Essentially, unlike a pitch shifter, a frequency shifter does not preserve the harmonic relationships in the input signal. In practice this means the output quickly starts to deviate from what is going in and extra tones are added which then interact and interfere with the source producing new harmonics and drones. Very good with other fx. Great studio addition as you can plug allsorts in not just for vocals.
31cm x 27cm x 24cm
240v unit
Mono input and output via 1/4" jacks on the rear. (standard 'guitar' Jacks)
some scuffs and slider plastic is missing, did not replace as does not affect use. See photos."
This one was spotted and sent in via
M Me.
Tuesday, April 14, 2026
PPG Wave 2.3 w/ New Display
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
"The Ultimate PPG Wave 2.3 – Serviced & Refurbished – Collector's Condition
via this eBay listing
This one was spotted and sent in via
M Me.
"The Ultimate PPG Wave 2.3 – Serviced & Refurbished – Collector's Condition
Saturday, March 21, 2026
TR1000 New Skin debut - New Project Premier
video upload by Teddy Rock Steady
A clearer view of the TR-808 skin for the TR-1000 featured in this previous post. This one was spotted and sent in via M Me.
From the video:
"sample chop preview, new project premiere track featuring the voice of one of the most influential and inspirational speakers of our time, Shahid Bolsen
Get TR1000 skinz https://synthskinz.com
Shout out to Synth Skinz"
EVA Maestro Oberheim Ring Modulator RM-1A Clone
Note: links to listings are affiliate links for which the site may be compensated.
This one was spotted and sent in via
M Me.
via this eBay listing
"We've received a used EVA/Maestro Oberheim Ring Modulator RM-1A Clone, which reproduces the sound of the Maestro Oberheim Ring Modulator RM-1A as faithfully as possible.
This is a highly specialized custom-made unit.
Created in response to requests from enthusiasts, this is the ultimate clone ring modulator designed to recreate John Lord's organ sound.
The layout of the input/output jacks, faders, and pin switches has been designed to closely match the original. Condition: B+: No issues for normal use"
This one was spotted and sent in via
M Me.
via this eBay listing
"We've received a used EVA/Maestro Oberheim Ring Modulator RM-1A Clone, which reproduces the sound of the Maestro Oberheim Ring Modulator RM-1A as faithfully as possible.
This is a highly specialized custom-made unit.
Created in response to requests from enthusiasts, this is the ultimate clone ring modulator designed to recreate John Lord's organ sound.
The layout of the input/output jacks, faders, and pin switches has been designed to closely match the original. Condition: B+: No issues for normal use"
Wednesday, December 17, 2025
Vintage Silver ROLAND Koffer Case
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
I've never seen one of these before.
Curious what it originally held. If you know, feel free to comment.
via this eBay listing
This one was spotted and sent in via
M Me.
I've never seen one of these before.
Curious what it originally held. If you know, feel free to comment.
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, exclusive, exclusive2025, Roland, Synth Bling
LABELS/MORE: Auctions, exclusive, exclusive2025, Roland, Synth Bling
Saturday, December 06, 2025
Vintage Roland MPU-401, CM-32L, CA-30, CN-20, CP-40, & CF-10 System
Note: links to listings are affiliate links for which the site may be compensated.
This one was spotted and sent in via
M Me.
via this eBay listing
1 pic of the inside below.
"Includes
Roland MPU-401 Midi Processing Unit SN 873387
Roland CM-32L LA Sound Module SN Z803461
Roland CA-30 Intelligent Arranger SN Z802892 with Roland Music Style Card TN-SC1-10
Roland CN-20 Music Entry Pad SN ZA92670
Roland CP-40 Pitch to Midi Converter with CP-40M Microphone (untested) SN Z881503
Roland CF-10 Digital Fader SN Z803213
(1)Roland Boss AC Adaptor Model PSA-120T
(2) Roland Boss AC Adaptor Model ACA-120
(1) Roland Boss AC Adaptor Model PSA-120
(1) Roland AC Adaptor Model ACB-120"
This one was spotted and sent in via
M Me.
via this eBay listing
1 pic of the inside below.
"Includes Roland MPU-401 Midi Processing Unit SN 873387
Roland CM-32L LA Sound Module SN Z803461
Roland CA-30 Intelligent Arranger SN Z802892 with Roland Music Style Card TN-SC1-10
Roland CN-20 Music Entry Pad SN ZA92670
Roland CP-40 Pitch to Midi Converter with CP-40M Microphone (untested) SN Z881503
Roland CF-10 Digital Fader SN Z803213
(1)Roland Boss AC Adaptor Model PSA-120T
(2) Roland Boss AC Adaptor Model ACA-120
(1) Roland Boss AC Adaptor Model PSA-120
(1) Roland AC Adaptor Model ACB-120"
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, Roland, synth guts
LABELS/MORE: Auctions, Roland, synth guts
Wednesday, November 19, 2025
Rare Ensoniq 14 Sound Disk Set #4-17 + Sound Lab For The Mirage NOS Sealed
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
"RARE NOS 14 factory sealed (stapled) 1985 Ensoniq sound disks all featuring different sounds for the Mirage Digital Sampling Keyboard. Disks #4-17
Also included is a factory sealed Ensoniq Sound Lab for Apple Macintosh and the Mirage Digital Sampling Keyboard
All disks are 3.5” floppys"
via this eBay listing
This one was spotted and sent in via
M Me.
"RARE NOS 14 factory sealed (stapled) 1985 Ensoniq sound disks all featuring different sounds for the Mirage Digital Sampling Keyboard. Disks #4-17
Also included is a factory sealed Ensoniq Sound Lab for Apple Macintosh and the Mirage Digital Sampling Keyboard
All disks are 3.5” floppys"
Saturday, October 25, 2025
Superlative SB01 (Roland SH 101 Clone) w/ Original Box
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me. "This is the Superlative SB01, a clone of Roland's SH101 80's mono synth. I backed this on Kickstarter many years ago, it has just arrived and I no longer have a need for it. it comes in original packaging, it's just the Synth, no cables as it does not come with any. Use any charging USB C cable to power/charge as it has a built in battery."
via this eBay listing
This one was spotted and sent in via
M Me. "This is the Superlative SB01, a clone of Roland's SH101 80's mono synth. I backed this on Kickstarter many years ago, it has just arrived and I no longer have a need for it. it comes in original packaging, it's just the Synth, no cables as it does not come with any. Use any charging USB C cable to power/charge as it has a built in battery."
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Auctions, eBay, Superlative
LABELS/MORE: Auctions, eBay, Superlative
Monday, October 13, 2025
SEQUENTIAL CIRCUITS SCI MODEL 64 SEQUENCER Interface Cartridge fΓΌr COMMODORE 64
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
From the listing (Google translated):
"The case shows virtually no signs of wear.
As far as I can tell, nothing appears to be damaged.
This is an absolute rarity!
Please note - Unfortunately, I cannot technically test the device, as I don't own a Commodore 64.
For this reason, I must sell the SEQUENTIAL CIRCUITS Model 64 as 'untested' or 'unreviewed'! This sale is non-returnable!
There is some information about this device online - for example - https://www.muzines.co.uk/articles/sci-model-64-sequencer/7891"
via this eBay listing
This one was spotted and sent in via
M Me.
From the listing (Google translated):
"The case shows virtually no signs of wear.
As far as I can tell, nothing appears to be damaged.
This is an absolute rarity!
Please note - Unfortunately, I cannot technically test the device, as I don't own a Commodore 64.
For this reason, I must sell the SEQUENTIAL CIRCUITS Model 64 as 'untested' or 'unreviewed'! This sale is non-returnable!
There is some information about this device online - for example - https://www.muzines.co.uk/articles/sci-model-64-sequencer/7891"
Sunday, October 12, 2025
Quasimidi Gigacard 512 Styles fΓΌr Roland E-35/E-36/E-56/E-70
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
Rare Quasimidi Gigacard, 512 Styles for Roland E-35/E-36/E-56/E-70.
This is the first one to be featured on the site.
via this eBay listing
This one was spotted and sent in via
M Me.
Rare Quasimidi Gigacard, 512 Styles for Roland E-35/E-36/E-56/E-70.
This is the first one to be featured on the site.
Wednesday, September 17, 2025
ATAK Special Rhythm Player, Vintage 19inch Drumcomputer
This one was spotted and sent in via
M Me.
From this listing
"ATAK special rhythm player, a vintage 19-inch drum machine.
Works and sounds great.
I think it's from the 80s, made in Turkey.
I can't find any other information about it online, so it's quite a rare drum machine."
See dealers on the right for pricing and availability on gear.
LABELS/MORE: ATAK, exclusive, exclusive2025, New Old
LABELS/MORE: ATAK, exclusive, exclusive2025, New Old
Friday, August 22, 2025
Digigram MidiMic Audio to MIDI Converter Microphone
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
This one was spotted and sent in via
M Me.
"π€ Rare Vintage 1988 Digigram Midimic – MIDI Microphone – Made in France – Fully Working! πΆ
A truly innovative π§ MIDI microphone made in π«π· France in 1988!
This is an ultra-rare collector’s item and a fascinating piece of studio gear: a microphone that outputs MIDI data! πΌ
Perfect for vocals or wind instruments π·πΊ, and also features an RCA aux line input π️ to convert line-level sources into MIDI, or use as a THRU to route audio to another channel π️.
π‘ Incredibly useful in the studio: this mic lets you record your voice or instrument directly to a DAW as MIDI data for unlimited editing possibilities! Use it with hardware or software synthesizers πΉ, expanders, or samplers.
You can literally sing or play your melody and transform it into MIDI notes — ideal for sax, clarinet, violin, solo guitar, and more π»πΈ.
π― Whether you're a singer looking to explore MIDI, or a composer with ideas that outpace your playing skills, the Midimic is a creative game-changer!
π§ Key Features:
✅ Fully working and in excellent cosmetic condition for its age
π Powered by a brand-new 9V battery (already installed)
π Includes a PDF copy of the original Owner’s Manual (English)
π§‘ A real vintage gem and collector's item!
π️ You can sing into it and control your synth or sound module with your voice — if you’ve ever dreamed of humming a melody straight into your MIDI sequencer, this is your moment! ✨"
via this eBay listing
This one was spotted and sent in via
M Me.
"π€ Rare Vintage 1988 Digigram Midimic – MIDI Microphone – Made in France – Fully Working! πΆA truly innovative π§ MIDI microphone made in π«π· France in 1988!
This is an ultra-rare collector’s item and a fascinating piece of studio gear: a microphone that outputs MIDI data! πΌ
Perfect for vocals or wind instruments π·πΊ, and also features an RCA aux line input π️ to convert line-level sources into MIDI, or use as a THRU to route audio to another channel π️.
π‘ Incredibly useful in the studio: this mic lets you record your voice or instrument directly to a DAW as MIDI data for unlimited editing possibilities! Use it with hardware or software synthesizers πΉ, expanders, or samplers.
You can literally sing or play your melody and transform it into MIDI notes — ideal for sax, clarinet, violin, solo guitar, and more π»πΈ.
π― Whether you're a singer looking to explore MIDI, or a composer with ideas that outpace your playing skills, the Midimic is a creative game-changer!
π§ Key Features:
✅ Fully working and in excellent cosmetic condition for its age
π Powered by a brand-new 9V battery (already installed)
π Includes a PDF copy of the original Owner’s Manual (English)
π§‘ A real vintage gem and collector's item!
π️ You can sing into it and control your synth or sound module with your voice — if you’ve ever dreamed of humming a melody straight into your MIDI sequencer, this is your moment! ✨"
Thursday, May 29, 2025
AViC KV-04 RYUICHI SAKAMOTO & KV-01 Seifuku Part1 ROM Cartridges for Yamaha DX7
Note: links to listings are affiliate links for which the site may be compensated.
AViC Keyboard Voice ROM KV-04 RYUICHI SAKAMOTO Cart via this eBay listing
AViC KV-01 Keyboard Voice ROM Seifuku Part1 Cart via this eBay listing
These were spotted and sent in via
M Me.
AViC Keyboard Voice ROM KV-04 RYUICHI SAKAMOTO Cart via this eBay listing
AViC KV-01 Keyboard Voice ROM Seifuku Part1 Cart via this eBay listing
These were spotted and sent in via
M Me.
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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









































