via this listing
Tuesday, July 29, 2025
1974 Roland SH-3 1974 Rare in Exceptional Condition
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"The SH-3 was produced for only one year- 1974, before making a filter change marketed as the SH-3a. I have heard that the 3a has the Moog style filter and the 3 has a EMS style diode filter. I think it has a character all its own. I think the SH-3 is closer to what Roland had intended to to release and it sounds fantastic."
via this Reverb listing
"The SH-3 was produced for only one year- 1974, before making a filter change marketed as the SH-3a. I have heard that the 3a has the Moog style filter and the 3 has a EMS style diode filter. I think it has a character all its own. I think the SH-3 is closer to what Roland had intended to to release and it sounds fantastic."
Vintage Crumar Spirit
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"Beautiful vintage crumar spirit. Comes with original extra vintage filterchip cem3350. i had modi implanted by Cox-electronics in the Netherlands. The hole and text where already there. Think crumar wanted it that time. It's been totally cleaned by Cox Electronics as well. Lot's of fun now with the midi and some functionality has midi cc as well. It's near mint. Sounds amazing this is not the remake but the original one made by Bob Moog."
via this Reverb listing
"Beautiful vintage crumar spirit. Comes with original extra vintage filterchip cem3350. i had modi implanted by Cox-electronics in the Netherlands. The hole and text where already there. Think crumar wanted it that time. It's been totally cleaned by Cox Electronics as well. Lot's of fun now with the midi and some functionality has midi cc as well. It's near mint. Sounds amazing this is not the remake but the original one made by Bob Moog."
Sequential Circuits Pro-One in Custom Wood Case & Clear LED Mod & Pitch Wheels SN 2594
Note: Auction links are affiliate links for which the site may be compensated.
via this eBay listing
"This one comes in a Custom Wood (Pacific Northwest Walnut made by Synthwood) and includes custom light-up modulation wheel and pitch-bend wheel. It looks really beautiful with the wood and would match perfectly with a Prophet 5 next to it. Tested and fully functional, this Pro One is a J-wire version serial #2594. There are some minor signs of wear to the synth (mostly limited to a small number of scratches on the bottom and rear), but overall it's in great shape and the top face looks very clean. It's been serviced as needed by current owner's synth tech. This is a classic Sequential mono keyboard synth great for bass, leads and effects, with a fun built-in step sequencer and arpeggiator."
via this eBay listing
"This one comes in a Custom Wood (Pacific Northwest Walnut made by Synthwood) and includes custom light-up modulation wheel and pitch-bend wheel. It looks really beautiful with the wood and would match perfectly with a Prophet 5 next to it. Tested and fully functional, this Pro One is a J-wire version serial #2594. There are some minor signs of wear to the synth (mostly limited to a small number of scratches on the bottom and rear), but overall it's in great shape and the top face looks very clean. It's been serviced as needed by current owner's synth tech. This is a classic Sequential mono keyboard synth great for bass, leads and effects, with a fun built-in step sequencer and arpeggiator."
Yamaha SS-30 with Service Manual
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"A rare gem from the golden era of string machines – the Yamaha SS-30, a fully analog string synthesizer with dual manual charm and unmistakable vintage warmth. Released in 1977, the SS-30 stands as Yamaha’s answer to the classic Solina and Logan stringers, but with its own distinct character: rich, shimmering ensemble sounds that sit beautifully in a mix or soundtrack.
This unit is in excellent working condition for its age. Attached a picture about one scratch, what is on 2 keys. Except this, all the other keys, sliders, and ensemble effects function as intended. Cosmetically in good shape with minor signs of age – as expected from a true '70s original.
Power: 220V (EU)
You can test and take with you from Hungary (Esztergom), or worldwide shipping available (need to calculate)."
via this Reverb listing
"A rare gem from the golden era of string machines – the Yamaha SS-30, a fully analog string synthesizer with dual manual charm and unmistakable vintage warmth. Released in 1977, the SS-30 stands as Yamaha’s answer to the classic Solina and Logan stringers, but with its own distinct character: rich, shimmering ensemble sounds that sit beautifully in a mix or soundtrack.
This unit is in excellent working condition for its age. Attached a picture about one scratch, what is on 2 keys. Except this, all the other keys, sliders, and ensemble effects function as intended. Cosmetically in good shape with minor signs of age – as expected from a true '70s original.
Power: 220V (EU)
You can test and take with you from Hungary (Esztergom), or worldwide shipping available (need to calculate)."
Oberheim DMX 8-Voice Drum Machine w/ Original Voice Card Boxes
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
Pics of the inside below.
"Fully functional Oberheim DMX in excellent condition.
Missing one rubber foot, and the two front screws that hold the panel down.
This unit does NOT have MIDI
Two additional sound cards included"
via this Reverb listing
Pics of the inside below.
"Fully functional Oberheim DMX in excellent condition.
Missing one rubber foot, and the two front screws that hold the panel down.
This unit does NOT have MIDI
Two additional sound cards included"
Walrus Audio MAKO R1 Reverb MKII Sound Demo with Synthesizer (no talking)
video upload by Limbic Bits
0:00 Boarder Pad
2:06 Dub Chords
3:27 Ambient Pluck (grainy reverb)
3:43 Indie Lead
5:02 Retro Pad
6:43 Pulse Pad (Warm Reverb)
A Nice Song for Summer
video upload by Hologram Electronics
"What can you create with just a monophonic synth, a guitar, and some Hologram effects pedals?
This track is an exploration of that question — a study in restraint, sound design, and the textures that emerge when you limit your tools and lean into the process. The core instruments here are the Moog Messenger, an electric guitar, and carefully chosen chains of effects.
Every element in this track — aside from the recorded acoustic drums in the first half of the medley — passed through Chroma Console, shaping and coloring the sound along the way, from subtle crunch and stereo widening to melting delays and cavernous reverb."
Moog Messenger
Prisma July 2025 Update
video upload by Rob Papen
"Prisma 1.0.8 update that loads RAW-2, SynFeX, and WirePluck.
New presets:
Bank 01 Super Pads 01 (11 new presets)
Bank 02 Motion Picture 01 ( 5 new presets)
Bank 04 Dance Arp 01 (7 new presets)
Bank 08 Classic Stacks 01 (8 new presets)
Bank 10 RAW-2 Edgy 01 (10 new presets)
To select the new presets, go to the 'bank manager' and the 'preset' tab, and then select 'order by date', which makes the newest presets appear on top of the list in the bank manager.
Please note that if you update your Prisma, the stand-alone version requires you to reselect your audio card and MIDI keyboard.
The stand-alone version is on the Mac inside the applications\Rob Papen\ folder, and on PC, it installs a desktop quicklink."
UDO RBN-1 Ribbon Controller — Part 2
video upload by UDO Audio
"Following the getting started video for the RBN-1, here's some more top tips on how to get the most out of your RBN-1, courtousy of Hazel Mills.
It's worth mentioning that all of these features are possible on the Super Gemini, which has our ribbon built into the chassis."
Part 1 here
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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
