via this listing
Additional Perfect Circuit listings
Wednesday, May 20, 2026
SOMA Laboratory Dvina Electro-Acoustic Stringed Instrument (Red)
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, SOMA
LABELS/MORE: Auctions, Perfect Circuit, SOMA
Soma Laboratory Ornament-8 Analog Synthiesizer
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing, 2nd one listed here
Additional CONTROL Listings
via this Reverb listing, 2nd one listed here
Additional CONTROL Listings
Soma Laboratory Pulsar-23 Organizational Organism Drum Machine w/ Travel Case
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 FVS-1 Custom Built for Ronnie Montrose, Vintage 4 SEMs & 2 Sequencers
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
"Bought this 27 years ago from the keyboardist, Gary Hull, who played keyboard on 2 Montrose albums and also toured with him 1990-94. Gary also modified this Oberheim Four voice for Montrose to add sequencer functions. This Oberheim has 4 great sounding late 70's SEM Units and 2 later model Sequencer modules that are quantized, and output 4 channels to the 4 SEMs. A remote keyboard controlled by the Keyboard Module allows spilts and 4 note polyphony and many options for control. A programmed Expressionist MIDI to CV interface is included so the four voice is also controllable polyphonically over MIDI.
--
The Four SEMs have been calibrated tuned and checked for complete noise free operation in 2026. The keyboard has been leveled and bushings replaced and plays perfectly. In 2026 the power module and output module were restored by Synth Smith, an analog repair specialist with over 30 years working on analog synths. I did not change much from what Montrose had done to this synthesizer. He was well known for his customization skills. I did add VCF controls and pots for all the SEMs so you can control from remote LFO's. The Programmer has never been connected in the Oberheim since I have owned it. In 2026 the Programmer battery was replaced and testing revealed it does work, but is not wired, and wiring it would be a lot of new wiring.
INCLUDES:
Oberheim FVS-1 in Custom Metal Case 27.5 wide, 23.75 High, 5 deep(inches)
49 Key Keyboard in Custom Metal Case
2 keyboard cables, power cable, Manual and Notes
MIDI to CV Rack Convertor Expressionist Programmed ($650 refund if not needed)
Hard Shell Pro Road Case for Main Unit
SHIPPING:
Only for Sale in North America due to size and weight
$500 Flat Fee for Shipping 3 Boxes, refund if less
Shipped Freight fully insured with tracking
Freight company will schedule delivery to your house
Box 1 - Main Unit 68 pounds 33 X 30 X 13 (Inches)
—
2 smaller boxes Shipped Fed Ex Ground
Box 2 - Keyboard 19 pounds 36 X 16 X 8
Box 3 - 18 pounds MIDI to CV, Manuals, Cables, Misc. 24 X 17 X 8"
via this eBay listing
"Bought this 27 years ago from the keyboardist, Gary Hull, who played keyboard on 2 Montrose albums and also toured with him 1990-94. Gary also modified this Oberheim Four voice for Montrose to add sequencer functions. This Oberheim has 4 great sounding late 70's SEM Units and 2 later model Sequencer modules that are quantized, and output 4 channels to the 4 SEMs. A remote keyboard controlled by the Keyboard Module allows spilts and 4 note polyphony and many options for control. A programmed Expressionist MIDI to CV interface is included so the four voice is also controllable polyphonically over MIDI.--
The Four SEMs have been calibrated tuned and checked for complete noise free operation in 2026. The keyboard has been leveled and bushings replaced and plays perfectly. In 2026 the power module and output module were restored by Synth Smith, an analog repair specialist with over 30 years working on analog synths. I did not change much from what Montrose had done to this synthesizer. He was well known for his customization skills. I did add VCF controls and pots for all the SEMs so you can control from remote LFO's. The Programmer has never been connected in the Oberheim since I have owned it. In 2026 the Programmer battery was replaced and testing revealed it does work, but is not wired, and wiring it would be a lot of new wiring.
INCLUDES:
Oberheim FVS-1 in Custom Metal Case 27.5 wide, 23.75 High, 5 deep(inches)
49 Key Keyboard in Custom Metal Case
2 keyboard cables, power cable, Manual and Notes
MIDI to CV Rack Convertor Expressionist Programmed ($650 refund if not needed)
Hard Shell Pro Road Case for Main Unit
SHIPPING:
Only for Sale in North America due to size and weight
$500 Flat Fee for Shipping 3 Boxes, refund if less
Shipped Freight fully insured with tracking
Freight company will schedule delivery to your house
Box 1 - Main Unit 68 pounds 33 X 30 X 13 (Inches)
—
2 smaller boxes Shipped Fed Ex Ground
Box 2 - Keyboard 19 pounds 36 X 16 X 8
Box 3 - 18 pounds MIDI to CV, Manuals, Cables, Misc. 24 X 17 X 8"
MOOG Liberation Analog Synthesizer Keytar w/ Manual & Docs SN 1205
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
"1981 MOOG Liberation Analog Synthesizer Keytar – Original Invoice, Manual, Warranty Card, Original Power Supply, 40-Foot Cable, Sealed S-TRIG Plug, Professionally Serviced
Offered for sale is a remarkably well-preserved 1981 MOOG Liberation analog synthesizer keytar—an exceptionally complete, documented, and professionally serviced example of one of Moog’s most iconic vintage instruments.
via this eBay listing
"1981 MOOG Liberation Analog Synthesizer Keytar – Original Invoice, Manual, Warranty Card, Original Power Supply, 40-Foot Cable, Sealed S-TRIG Plug, Professionally Serviced
Offered for sale is a remarkably well-preserved 1981 MOOG Liberation analog synthesizer keytar—an exceptionally complete, documented, and professionally serviced example of one of Moog’s most iconic vintage instruments.
Genki Instruments Katla #7 | Winterdagen
video upload by Winterdagen
"I'm a huge fan of sawtooth lfos on the filter cutoff. Sometimes for proper rhythmic stuff, sometimes for more freely timed plucks like in this patch.
On Katla it's so easy to add some extra movement to otherwise simply repeating lfo modulation! I turned up the keytracking a bit on the lfos, making each note have their own lfo speed, and I've routed the envelope to the lfo speeds making them go faster as the pad swells in. It's so easy to dial in sounds like this on Katla because every modulation destination has its own bipolar slider, and keytracking has dedicated knobs per parameter you can apply it to. To top the patch off I added a healthy dose of Katla's incredible reverb and added some Katla modulation params."
Diving deep into Walk 4, a quad brownian accumulator from Joranalogue Audio Design
video upload by Perceptes and Joranalogue Audio Design
"In this video, we'll be diving deep into Walk 4, a new Eurorack module from Joranalogue Audio Design uses four accumulators to create stepped voltages suitable for audio, modulation, and sequencing."
00:00 Meet Walk 4
00:45 Patch previews
01:20 Module overview
10:16 Subharmonics
16:02 Stacked interval sequences
20:07 Noise source for percussion
23:56 Modulation source for timbral change
27:06 Four pitch sequences
29:37 Walk 4 jam
Zero: Library Workflow
video upload by Drift DJ Industries
"Check out a walkthrough of Zero's library management workflow.
Zero is a standalone DJ-style playback and recording system. No host devices or external apps are required to play songs or organize your library. Here we go over all the systems which you can use to fill Zero with your own audio files and prepare those files for gigs, jams and experimental audio sessions."
The Latest MAFD (MIDI Adapter For DFAM) is your DFF (Drumming Friend Forever) / DFFMAFD Demo
video upload by Sonoclast Music
"Demonstrating how to sync a DFAM's sequencer with MIDI Notes and MIDI Clock using the DFFMAFD. Also, see here how to sync a DFAM to a live drummer (our friend Amir Ziv):"
Amir Ziv's custom Moog DFAM rig w/Sonoclast, Keith McMillen Instruments, Avi Ziv, and Bome Software
video upload by Amir Ziv
"Composer/Drummer/Educator Amir Ziv demos his custom Moog DFAM rig. This system was created for remotely controlling and manipulating the Moog DFAM sequencer and for remotely modulating the synthesizer's sounds while playing the drum-set. Rather than play along to a loop or a recording, the goal was to be able to get the synth (in real-time) to "lead-in/follow/respond to" whatever phrasing is played on the drum-set in an improvisation or in a through-composed composition.
The live performance at the end of this video as well as the intro/outro music are improvised compositions performed live in real-time on this custom DFAM rig and the acoustic drum-set.. There are no overdubs or edits in any of the music.
00:00 Custom DFAM rig description and demo
24:45 Live performance"
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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
