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via this VEMIA listing
Click the auction link on top when you get there for additional listings.
VEMIA is Peter Forrest's auction house. He is the author of The A-Z of Analogue Synthesizer Books.
"First Drum Machine from ROLAND : model TR700 the grandfather of CR78. It's in very good conditions for 54 years old instrument. It has a mods for to use with 220V but still has the original plug from Japan. Fantastic sound like CR78 but BD like Tr808."
Wednesday, April 09, 2025
The Roland TR-608 - Modified Roland TR-606
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via this VEMIA listing
Click the auction link on top when you get there for additional listings.
VEMIA is Peter Forrest's auction house. He is the author of The A-Z of Analogue Synthesizer Books.

"Modified Roland TR-606 dubbed the TR-608 As used by Hainbach. Takes the humble TR-606 and supercharges it into 808 territory and beyond with tuning, decay and tone mods. Incredible modified Roland TR-606 for sale. This is the TR-608, believed to have been modded by Filippo Samore. As used and loved by Hainbach (video below) who had this to say about it: “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.” https://youtu.be/aovvoLD2BCs 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. - On the kick, It adds: Tune, env Control, tone and decay. - Similar thing with the snare, same borrowed technology from the 808 but with an improved decay length. - It gives access to tune, snappy and decay. - It adds tune for L.H toms independent from each other and cuts out the annoying noise present in their circuit. And finally the modification taps into the original circuit of the hi-hats opening the way to hands-on control of : Tune and decay, separate for both open and closed hats This example has had individual outs for kick, snare and toms added. It also has a Kenton Kadi port installed for anyone who already owns a Kadi box or a Kenton Pro with Kadi capabilities added then you are definitely cooking with gas! Voltage Information: Takes a standard 9v power supply (not included).
Lots of interest in this, so a couple of answers to questions: 1) The individual outs are Bass Drum, Snare, Toms 2) Each individual output has a fixed volume and is completely independent of the master output. You can still feed the bass drum out through the master output if you want. Or turn it down to mute it from the master volume. 3) Din Sync is untouched and works as originally intended by Roland."
via this VEMIA listing
Click the auction link on top when you get there for additional listings.
VEMIA is Peter Forrest's auction house. He is the author of The A-Z of Analogue Synthesizer Books.

"Modified Roland TR-606 dubbed the TR-608 As used by Hainbach. Takes the humble TR-606 and supercharges it into 808 territory and beyond with tuning, decay and tone mods. Incredible modified Roland TR-606 for sale. This is the TR-608, believed to have been modded by Filippo Samore. As used and loved by Hainbach (video below) who had this to say about it: “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.” https://youtu.be/aovvoLD2BCs 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. - On the kick, It adds: Tune, env Control, tone and decay. - Similar thing with the snare, same borrowed technology from the 808 but with an improved decay length. - It gives access to tune, snappy and decay. - It adds tune for L.H toms independent from each other and cuts out the annoying noise present in their circuit. And finally the modification taps into the original circuit of the hi-hats opening the way to hands-on control of : Tune and decay, separate for both open and closed hats This example has had individual outs for kick, snare and toms added. It also has a Kenton Kadi port installed for anyone who already owns a Kadi box or a Kenton Pro with Kadi capabilities added then you are definitely cooking with gas! Voltage Information: Takes a standard 9v power supply (not included).Lots of interest in this, so a couple of answers to questions: 1) The individual outs are Bass Drum, Snare, Toms 2) Each individual output has a fixed volume and is completely independent of the master output. You can still feed the bass drum out through the master output if you want. Or turn it down to mute it from the master volume. 3) Din Sync is untouched and works as originally intended by Roland."
UDO Super 6 Polyphonic Hybrid Keyboard Synthesizer - Limited Edition White SN S613224
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via this listing
Additional Perfect Circuit listings
via this listing
Additional Perfect Circuit listings
Roland VERSELAB MV-1 Song Production Studio
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via this listing
Additional Perfect Circuit listings
via this listing
Additional Perfect Circuit listings
Boss DR-202 Dr. Groove Drum Machine
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via this listing
Additional Perfect Circuit listings
via this listing
Additional Perfect Circuit listings
Black Corporation ISE-NIN DIY (Through Hole) 2022
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via this Reverb listing
"This item was purchased directly from Black Corp in Summer 2024. This is a through hole DIY version of the ISE-NIN and was assembled by the circuit board designer at Black Corp, Aleksandr Kholenko.
This unit has just returned from being serviced/recalibrated and is fully functional."
via this Reverb listing
"This item was purchased directly from Black Corp in Summer 2024. This is a through hole DIY version of the ISE-NIN and was assembled by the circuit board designer at Black Corp, Aleksandr Kholenko.
This unit has just returned from being serviced/recalibrated and is fully functional."
Grendel Drone Commander - rare V.1
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via this Reverb listing
"The very rare, and very elusive Grendel Drone Commander. The only synthesizer built out of a used 7.62 NATO ammo can. Only 750 were made and they very rarely make it to the used market. With a total of 9 knobs, the Drone Commander offers two manually-tuned oscillators and two LFOs, plus an unusually colorful and nasty filter. LFO1 is an analog variable-shape oscillator, and LFO2 is a pulse waveform that auto-synchronizes to LFO1 at a ratio of 2x, 4x, 8x, or 16x. Both LFOs can be routed to the filter for rhythmic patterns. A line-level output jack is provided for connection to amplifiers or effects."
via this Reverb listing
"The very rare, and very elusive Grendel Drone Commander. The only synthesizer built out of a used 7.62 NATO ammo can. Only 750 were made and they very rarely make it to the used market. With a total of 9 knobs, the Drone Commander offers two manually-tuned oscillators and two LFOs, plus an unusually colorful and nasty filter. LFO1 is an analog variable-shape oscillator, and LFO2 is a pulse waveform that auto-synchronizes to LFO1 at a ratio of 2x, 4x, 8x, or 16x. Both LFOs can be routed to the filter for rhythmic patterns. A line-level output jack is provided for connection to amplifiers or effects."
Acidlab Miami
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via this Reverb listing
via this Reverb listing
Syntecno Teebee Mark III
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via this Reverb listing
"BEENAW BEENAW BEENAW BEENAW
The Syntecno TeeBee Mark III BassLine beast!
This is a rare gem that does TB-303 so well and so much more.
This unit is fully functional with some minor rack mounting rash. I added detail photos of the rack rash to keep things transparent."
via this Reverb listing
"BEENAW BEENAW BEENAW BEENAW
The Syntecno TeeBee Mark III BassLine beast!
This is a rare gem that does TB-303 so well and so much more.
This unit is fully functional with some minor rack mounting rash. I added detail photos of the rack rash to keep things transparent."
Nord Modular G2 Engine Software-Controlled Rackmount Synthesizer
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via this Reverb listing
via this Reverb listing
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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

































