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Showing posts with label Auctions. Show all posts
Showing posts with label Auctions. Show all posts
Sunday, November 30, 2025
Akai MPC2000XL Sampler / Workstation (Blue) SN 80025-01008
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via this listing
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Additional Perfect Circuit listings
CONDUCTIVE LABS NDLR DESKTOP SEQUENCER
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via this listing
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"A pre-owned Conductive Labs NDLR in good condition. It comes with original packaging and accessories.
Manufacturer's description
A MIDI Four-track, Sequenced Arpeggiator, Chord and Drone Player
We’ve turned complex music theory into a killer synthesizer jamming MIDI controller. With four parts that can play up to 8 synths, you can make fantastic electronic music, such as soundscapes, electronica, ambient, electro, or techno to name a few. Whether noodling in your music space after work or jamming with friends, The NDLR can take your music to amazing places!
Press one of the seven chord buttons, and the two arpeggiators and drone follow the chord notes while your polyphonic synth sings with pads.
There are start and stop buttons for each of the four parts, and a button to start/stop all parts. And there’s a “panic” button to stop all MIDI notes.
via this listing
Additional Signal Sounds listings
"A pre-owned Conductive Labs NDLR in good condition. It comes with original packaging and accessories.
Manufacturer's description
A MIDI Four-track, Sequenced Arpeggiator, Chord and Drone Player
We’ve turned complex music theory into a killer synthesizer jamming MIDI controller. With four parts that can play up to 8 synths, you can make fantastic electronic music, such as soundscapes, electronica, ambient, electro, or techno to name a few. Whether noodling in your music space after work or jamming with friends, The NDLR can take your music to amazing places!
Press one of the seven chord buttons, and the two arpeggiators and drone follow the chord notes while your polyphonic synth sings with pads.
There are start and stop buttons for each of the four parts, and a button to start/stop all parts. And there’s a “panic” button to stop all MIDI notes.
SEQUENTIX CIRKLON & CV BREAKOUT DESKTOP SEQUENCER
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via this listing
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"A pre-owned Sequentix Cirklon & CV Breakout in very good condition. It comes with the expander cable, power supply and original manual.
Manufacturer's description
The Cirklon Mk1 is a dedicated hardware sequencing workstation designed for precise, real-time control of MIDI, USB-MIDI, and analogue systems. Built around a high-resolution encoder interface and a structured pattern engine, the Mk1 provides tight timing, flexible routing, and a streamlined workflow for complex setups.
This unit ships with the CVIO breakout expander, offering sixteen analogue control voltage outputs and eight gate outputs for direct integration with modular and other voltage-controlled instruments. The CVIO system delivers calibrated, low-latency analogue control suitable for demanding studio environments."
via this listing
Additional Signal Sounds listings
"A pre-owned Sequentix Cirklon & CV Breakout in very good condition. It comes with the expander cable, power supply and original manual.
Manufacturer's description
The Cirklon Mk1 is a dedicated hardware sequencing workstation designed for precise, real-time control of MIDI, USB-MIDI, and analogue systems. Built around a high-resolution encoder interface and a structured pattern engine, the Mk1 provides tight timing, flexible routing, and a streamlined workflow for complex setups.
This unit ships with the CVIO breakout expander, offering sixteen analogue control voltage outputs and eight gate outputs for direct integration with modular and other voltage-controlled instruments. The CVIO system delivers calibrated, low-latency analogue control suitable for demanding studio environments."
Moog Micromoog SN 3192
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via this eBay listing
Additional Tone Tweakers Listings
"We fully disassembled, cleaned and serviced this unit the way we typically do with our high end vintage synths, in an effort to make it as good as it can be. This restoration took 12 hours of highly skilled vintage synth tech time, plus parts costs. The high value of this work is of course factored into its price that should be considerably higher than that of cranky unserviced or minimally serviced examples on the market."
via this eBay listing
Additional Tone Tweakers Listings
"We fully disassembled, cleaned and serviced this unit the way we typically do with our high end vintage synths, in an effort to make it as good as it can be. This restoration took 12 hours of highly skilled vintage synth tech time, plus parts costs. The high value of this work is of course factored into its price that should be considerably higher than that of cranky unserviced or minimally serviced examples on the market."
Vintage ARP Analog Minus Noise Mixer
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via this Reverb listing
via this Reverb listing
Estradin Pulsar
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via this Reverb listing
You can find a black model and a couple of demos in previous posts here.
"Rare soviet drum machine,recently fully serviced and midi installed,works great!Unit have new red sides,very rare white version!64 presets with trigger pads"
via this Reverb listing
You can find a black model and a couple of demos in previous posts here.
"Rare soviet drum machine,recently fully serviced and midi installed,works great!Unit have new red sides,very rare white version!64 presets with trigger pads"
X1L3 Shard Harsh Noise Generator - Yellow Model
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via this eBay listing
You can find demos in previous posts here.
"This is the Shard harsh noise generator — a boutique power-electronics / industrial sound device known for its aggressive textures, chaotic oscillators, and fully manual performance controls.
A favorite among harsh noise, PE, drone, and experimental sound artists, Shard units are highly sought after due to their unusual interface and raw sonic power.
The panel includes multiple oscillators, pitch controls, gates, chaos switches, atrophy charge pads, and external input options for expanding or processing noise in real time. Great for standalone improvisation, modular interaction, or adding harsh layers to audio work.
⸻
Features:
• Multiple oscillators with individual pitch controls
• Patchable ports for expanded routing
• Dedicated chaos & atrophy switches
• Gate pads for manual noise triggering
• External input for additional audio processing
• Rugged metal enclosure
• Runs on 9V power (battery or adapter)
• Perfect for harsh noise, PE, dark ambient, and experimental sound design"
via this eBay listing
You can find demos in previous posts here.
"This is the Shard harsh noise generator — a boutique power-electronics / industrial sound device known for its aggressive textures, chaotic oscillators, and fully manual performance controls.
A favorite among harsh noise, PE, drone, and experimental sound artists, Shard units are highly sought after due to their unusual interface and raw sonic power.
The panel includes multiple oscillators, pitch controls, gates, chaos switches, atrophy charge pads, and external input options for expanding or processing noise in real time. Great for standalone improvisation, modular interaction, or adding harsh layers to audio work.
⸻
Features:
• Multiple oscillators with individual pitch controls
• Patchable ports for expanded routing
• Dedicated chaos & atrophy switches
• Gate pads for manual noise triggering
• External input for additional audio processing
• Rugged metal enclosure
• Runs on 9V power (battery or adapter)
• Perfect for harsh noise, PE, dark ambient, and experimental sound design"
Synth Portal Steampunk Modular Powered Synthesizer w/ 8 modules
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via this eBay listing
"Hand built,custom Steampunk Modular Synthesizer with power & 3a power brick.
Width: 87 hp
Zlob- dual VCO- 6 outputd & 2 inputs
Frequency Central- Little Melody Sequencer
Cubu clock generator with 3 probability outputs
Zlob-Skew-fade LFO with 3 outputs & cv input
3 ch. passive mixer
Zlob-Diode Chaos with 3 chaos outs & trig.
Hive-passive mult-1x10,2x5
Zlob-2 ch. VCA & Mixer
patch cables,mounting screws, power cables & 3a power brick
Tactile-feel controls giving tweaking a fun dimention"
via this eBay listing
"Hand built,custom Steampunk Modular Synthesizer with power & 3a power brick.
Width: 87 hp
Zlob- dual VCO- 6 outputd & 2 inputs
Frequency Central- Little Melody Sequencer
Cubu clock generator with 3 probability outputs
Zlob-Skew-fade LFO with 3 outputs & cv input
3 ch. passive mixer
Zlob-Diode Chaos with 3 chaos outs & trig.
Hive-passive mult-1x10,2x5
Zlob-2 ch. VCA & Mixer
patch cables,mounting screws, power cables & 3a power brick
Tactile-feel controls giving tweaking a fun dimention"
Saturday, November 29, 2025
Electrocomp EML 400 401 Sequencer
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via this eBay listing
Additional Tone Tweakers Listings
"This unit was previously modified to include an audio output jack for vco2. This allows frequency modulation (FM) of the oscillators or filter which nicely expands this examples sonic palette beyond a stock 400's.
We did the following work to this unit. The items at the top of the list are things we consider normal servicing. The ones at the bottom labelled preventative are future-proofing measures that other sellers rarely take (they often don't even service them either).
Cleaned inside and out.
Replaced power cable.
Cleaned and lubed switches and pots.
Replaced jack washer nuts.
Replaced some screws.
Replaced all electrolytic capacitors - preventative.
Calibrated vco1 vco2 cv exp cv - a must after a recap.
Replaced IC socket (14pin x 16) - preventative.
Replaced all pins inside multipin connectors on unit and inside connector cable - preventative."
via this eBay listing
Additional Tone Tweakers Listings
"This unit was previously modified to include an audio output jack for vco2. This allows frequency modulation (FM) of the oscillators or filter which nicely expands this examples sonic palette beyond a stock 400's. We did the following work to this unit. The items at the top of the list are things we consider normal servicing. The ones at the bottom labelled preventative are future-proofing measures that other sellers rarely take (they often don't even service them either).
Cleaned inside and out.
Replaced power cable.
Cleaned and lubed switches and pots.
Replaced jack washer nuts.
Replaced some screws.
Replaced all electrolytic capacitors - preventative.
Calibrated vco1 vco2 cv exp cv - a must after a recap.
Replaced IC socket (14pin x 16) - preventative.
Replaced all pins inside multipin connectors on unit and inside connector cable - preventative."
Fender Rhodes Chroma Polaris II SN 500336
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via this eBay listing
Additional Tone Tweakers Listings
"This Polaris 2 was fully electronically restored and is now in like new perfect working condition. And yes, of course the membrane panel that always breaks has been replaced with a brand new one so you won't have to worry about replacing it. We don't mess around here.
sn50033x
Here's what we did to this unit to make it perfect, along with some preventative stuff other sellers rarely do...because we want this unit to hopefully outlast others.
Replaced power supply electrolytic capacitors (future-proofing)
Reflowed some solder points as a preventative measure.
Cleaned unit inside and out.
Replaced membrane panel (we consider this a necessity even in the rare cases where they're fully working, as they eventually break - panel cost is $250 + installation labor, which is of course embedded in our price)
Cleaned and lubed all slide pots and levers.
Cleaned jacks.
Cleaned key contacts.
Removed original battery and replaced with new lithium battery (3v D type)
Recalibrated.
Replaced high and low output jacks.
Replaced operating system eproms with latest version 11 (originally was version 5)
This process took 11 hours of highly skilled vintage synth tech time, plus parts costs. The result is a perfectly working instrument that's ready to play, without having to pay another tech to do what we did and to wait months to years for another tech to do it."
via this eBay listing
Additional Tone Tweakers Listings
"This Polaris 2 was fully electronically restored and is now in like new perfect working condition. And yes, of course the membrane panel that always breaks has been replaced with a brand new one so you won't have to worry about replacing it. We don't mess around here.sn50033x
Here's what we did to this unit to make it perfect, along with some preventative stuff other sellers rarely do...because we want this unit to hopefully outlast others.
Replaced power supply electrolytic capacitors (future-proofing)
Reflowed some solder points as a preventative measure.
Cleaned unit inside and out.
Replaced membrane panel (we consider this a necessity even in the rare cases where they're fully working, as they eventually break - panel cost is $250 + installation labor, which is of course embedded in our price)
Cleaned and lubed all slide pots and levers.
Cleaned jacks.
Cleaned key contacts.
Removed original battery and replaced with new lithium battery (3v D type)
Recalibrated.
Replaced high and low output jacks.
Replaced operating system eproms with latest version 11 (originally was version 5)
This process took 11 hours of highly skilled vintage synth tech time, plus parts costs. The result is a perfectly working instrument that's ready to play, without having to pay another tech to do what we did and to wait months to years for another tech to do it."
Akai MPC Key 37 Standalone Production Keyboard
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via this listing
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Akai MPC Key 61 Standalone Production Keyboard
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via this listing
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SOMA LABORATORY COSMOS DRIFTING MEMORY STATION DELAY PROCESSOR (ORANGE)
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via this listing
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KODAMO ESSENSEFM DIGITAL FM SYNTHESISER
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via this listing
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"Manufacturer's description
The EssenceFM is a powerful 300-voice polyphony 16-part multitimbral FM synthesizer with a modern touchscreen interface, built-in effects, separate outputs and more. It turns FM synthesis into a fun and enjoyable experience. Create your own sounds faster than on any other synthesizer!
With its incredible sound layering capabilities (up to 128 layers per note), the EssenceFM excels at rich sound textures. Each voice also has its own digital multimode filter and 6-slot modulation matrix that allows real-time control over 200+ parameters."
via this listing
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"Manufacturer's description
The EssenceFM is a powerful 300-voice polyphony 16-part multitimbral FM synthesizer with a modern touchscreen interface, built-in effects, separate outputs and more. It turns FM synthesis into a fun and enjoyable experience. Create your own sounds faster than on any other synthesizer!
With its incredible sound layering capabilities (up to 128 layers per note), the EssenceFM excels at rich sound textures. Each voice also has its own digital multimode filter and 6-slot modulation matrix that allows real-time control over 200+ parameters."
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"The K4 from Kawai can be thought of as a warm and fuzzy digital synthesizer. A sample-based digital synth, its sounds are those typically weird industrial type sounds that can still be useful in lo-fi, big-beat and trip hop music styles. The sounds are 16-bit preset PCM samples of acoustic instruments. However, unlike its predecessor the K1, the K4 adds a welcomed digital filter section. This truly makes the K4 more flexible, fun and useful for today's filter tweaking music effects!
The XD5 is an awesome drum synth module that has 256 waveforms, four of which can be combined to create a drum sound. It also has great resonant lowpass filters and envelopes for shaping the sounds and is excellent for techno, electro and industrial drums. For effects, a delay type effect is possible as well as a ring-modulator. It also has stereo outputs plus 6 individual outs for the studio pros. Mouse On Mars might use it.
The MM16 is a multi-purpose MIDI data processor with 17 front panel faders. Each of the sliders can be assigned for continuous controller information over any one of 16 MIDI channels, a "velocity mode" that uses the 16 sliders to become a "graphic EQ" for velocity data, and a system exclusive mode for transmitting system exclusive information to control individual synthesizer functions. Setups are included for Kawai K1, K4, K5, Yamaha DX7, and Roland D50. The MM16 can merge two MIDI signals, and can perform MIDI channelizing. You can also use it as a control surface for DAWS"
via this Reverb listing
"The K4 from Kawai can be thought of as a warm and fuzzy digital synthesizer. A sample-based digital synth, its sounds are those typically weird industrial type sounds that can still be useful in lo-fi, big-beat and trip hop music styles. The sounds are 16-bit preset PCM samples of acoustic instruments. However, unlike its predecessor the K1, the K4 adds a welcomed digital filter section. This truly makes the K4 more flexible, fun and useful for today's filter tweaking music effects!The XD5 is an awesome drum synth module that has 256 waveforms, four of which can be combined to create a drum sound. It also has great resonant lowpass filters and envelopes for shaping the sounds and is excellent for techno, electro and industrial drums. For effects, a delay type effect is possible as well as a ring-modulator. It also has stereo outputs plus 6 individual outs for the studio pros. Mouse On Mars might use it.
The MM16 is a multi-purpose MIDI data processor with 17 front panel faders. Each of the sliders can be assigned for continuous controller information over any one of 16 MIDI channels, a "velocity mode" that uses the 16 sliders to become a "graphic EQ" for velocity data, and a system exclusive mode for transmitting system exclusive information to control individual synthesizer functions. Setups are included for Kawai K1, K4, K5, Yamaha DX7, and Roland D50. The MM16 can merge two MIDI signals, and can perform MIDI channelizing. You can also use it as a control surface for DAWS"
Kawai K5000S SN 592701
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via this Reverb listing
via this Reverb listing
Elektron Sidstation
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via this Reverb listing
via this Reverb listing
E-mu Drumulator with MIDI + LinnDrum kit eproms kit
Note: links to listings are affiliate links for which the site may be compensated.
video upload by ohm_studi_ohm
via this eBay listing
Pics of the inside below.
"Classic 80s 8bit PCM drum machine, used in countless hits.
This particular unit was serviced:
- all electrolytic capacitors were replaced
- switches and pots were cleaned
- latest firmware eprom was installed (3.0)
- factory patterns were loaded
- MIDI interface was added, built using the original E-mu design. This allows you to trigger the 12 sounds over MIDI dynamically
- comes with 4x additional eproms containing the famous LinnDrum LM2 sounds. I made a video a few monthes ago comparing 2 drumulators with stock and linnDrum kit if you want to hear the difference (youtu.be/k_EuRlCi_Vk)
Works perfectly. Cosmetic it is in quite good condition with some scuffs here and there, and also 2 holes were drilled in the back from a previous owner (no idea what was the reason). Unit is 230v."
video upload by ohm_studi_ohm
via this eBay listing
Pics of the inside below.
"Classic 80s 8bit PCM drum machine, used in countless hits.This particular unit was serviced:
- all electrolytic capacitors were replaced
- switches and pots were cleaned
- latest firmware eprom was installed (3.0)
- factory patterns were loaded
- MIDI interface was added, built using the original E-mu design. This allows you to trigger the 12 sounds over MIDI dynamically
- comes with 4x additional eproms containing the famous LinnDrum LM2 sounds. I made a video a few monthes ago comparing 2 drumulators with stock and linnDrum kit if you want to hear the difference (youtu.be/k_EuRlCi_Vk)
Works perfectly. Cosmetic it is in quite good condition with some scuffs here and there, and also 2 holes were drilled in the back from a previous owner (no idea what was the reason). Unit is 230v."
Friday, November 28, 2025
Analogue Solutions Vostok 2020 Semi-Modular Analog Synthesizer SN 11500
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via this listing
Additional Perfect Circuit listings
via this listing
Additional Perfect Circuit listings
Arturia Polybrute Noir Polyphonic Analog Keyboard Synthesizer
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
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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
