Saturday, August 30, 2025
[$27] DIY PCM MIDI Sound module | SAM2696 & XIAO MIDI Synthesizer based
video upload by HAGIWO
"PCM MIDI sound module based on the Seeed Studio XIAO MIDI Synthesizer. It plays using external MIDI signals, and the four built-in buttons can also be used to change parameters. working documents (schematics & source code) https://note.com/solder_state/n/n1f2e... XIAO MIDI Synthesizer https://www.seeedstudio.com/XIAO-MIDI..."
You can find an overview video of the Seeed Studio XIAO here.
Roland Gaia2 Demo I No Talking + Custom Presets
video upload by Alphacode Synth Demos & Custom Presets
"You can buy this bank of 64 custom Presets for 13.99€
Contact: alphacodesynth@gmail.com"
Nord Rack 2 16-Voice Rackmount Virtual Analog Synthesizer
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
JoMox Alpha Base Analog Drum Synthesizer SN 2021-728
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
Additional SYNTH CITY Listings
"Jomox Alpha Base, tested in perfect working order. Includes SD card and original power supply.
It's true analogue. Eleven instruments, sequencer, Midi/USB/SD-Card. Samples. Sampling inputs, balanced individual outputs.
Although it may appear similar to the classics XBASE 09, 999 and 888, the ALPHA BASE has an entirely new design under the hood. We have put in the concentrated know-how of the Jomox drum machines and of our synths of the past 20 years. We have simplified some things, but also added new components or have combined them new. The outcome is the best sounding and most versatile drum machine that Jomox has ever built."
via this Reverb listing
Additional SYNTH CITY Listings
"Jomox Alpha Base, tested in perfect working order. Includes SD card and original power supply.
It's true analogue. Eleven instruments, sequencer, Midi/USB/SD-Card. Samples. Sampling inputs, balanced individual outputs.
Although it may appear similar to the classics XBASE 09, 999 and 888, the ALPHA BASE has an entirely new design under the hood. We have put in the concentrated know-how of the Jomox drum machines and of our synths of the past 20 years. We have simplified some things, but also added new components or have combined them new. The outcome is the best sounding and most versatile drum machine that Jomox has ever built."
Waldorf Kyra 128-Voice Virtual Analog Desktop Synthesizer SN *19390950023*
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
Additional SYNTH CITY Listings
"The Waldorf Kyra is a powerful, FPGA-based virtual analog desktop synthesizer known for its high-resolution sound, 128-voice polyphony, and 8-part multitimbrality. It features high-resolution oscillators with multiple waveforms, dual multi-mode filters, a robust modulation matrix, and studio-quality effects. The Kyra boasts extensive connectivity with USB audio and MIDI for direct computer integration, four stereo analog audio outputs, and a full-metal, roadworthy chassis with a clear OLED display."
via this Reverb listing
Additional SYNTH CITY Listings
"The Waldorf Kyra is a powerful, FPGA-based virtual analog desktop synthesizer known for its high-resolution sound, 128-voice polyphony, and 8-part multitimbrality. It features high-resolution oscillators with multiple waveforms, dual multi-mode filters, a robust modulation matrix, and studio-quality effects. The Kyra boasts extensive connectivity with USB audio and MIDI for direct computer integration, four stereo analog audio outputs, and a full-metal, roadworthy chassis with a clear OLED display."
Black Model Quasimidi Polymorph
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
via this Reverb listing
Monome Norns Arc Grid Bundle
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"Monome bundle! In excellent shape and kept in a smoke free home. Some signs of wear along the bottom of the Norns and Arc, but nothing major. Includes:
- Monome Norns (2024 version)
- Monome Grid (2020 version)
- Monome Arc (2019 version)
Norns does not include the power adaper—just the USB cable and no original box. Grid includes USB cable and original box. Arc includes USB—no box."
via this Reverb listing
"Monome bundle! In excellent shape and kept in a smoke free home. Some signs of wear along the bottom of the Norns and Arc, but nothing major. Includes:
- Monome Norns (2024 version)
- Monome Grid (2020 version)
- Monome Arc (2019 version)
Norns does not include the power adaper—just the USB cable and no original box. Grid includes USB cable and original box. Arc includes USB—no box."
Yamaha CS-60 Polyphonic Synthesizer SN 1977
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"All keys and sliders work perfectly. This instrument has been stored in my church office for 25 years. It has had very little use.
The sound seems to be in great shape.
The only cosmetic flaw is a small crack by the power button.
I do not have any peddles for it."
via this Reverb listing
"All keys and sliders work perfectly. This instrument has been stored in my church office for 25 years. It has had very little use.
The sound seems to be in great shape.
The only cosmetic flaw is a small crack by the power button.
I do not have any peddles for it."
Yamaha SS-30 String Synth SN 2683
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"Vintage Yamaha SS30 string synth in excellent working condition. Released in 1977, this was Yamaha’s only dedicated string machine—favoured by Ultravox, Magazine, Visage, and Simple Minds for its lush, chorus-rich sound and road-ready build.
Specs & Condition:
• Power: 100V Japanese unit (stepdown transformer required for AU/EU mains)
• Operation: Fully functional, all voices and effects working as intended
• Cosmetics: Minor surface marks and faint sticker residue; purely cosmetic
• Storage: Long-term storage in climate-controlled warehouse
Features:
• Full polyphony via divide-down architecture
• Dual oscillators per voice with detune and vibrato
• Cello and Violin voices with ensemble (chorus) effect
• Brilliance and sustain controls
• 49-key keyboard
Included:
• Main unit
• Original power cable
This is a rare chance to own a piece of analogue history with real studio and stage provenance. Ideal for collectors, synth heads, and producers chasing authentic late-70s string textures."
via this Reverb listing
"Vintage Yamaha SS30 string synth in excellent working condition. Released in 1977, this was Yamaha’s only dedicated string machine—favoured by Ultravox, Magazine, Visage, and Simple Minds for its lush, chorus-rich sound and road-ready build.Specs & Condition:
• Power: 100V Japanese unit (stepdown transformer required for AU/EU mains)
• Operation: Fully functional, all voices and effects working as intended
• Cosmetics: Minor surface marks and faint sticker residue; purely cosmetic
• Storage: Long-term storage in climate-controlled warehouse
Features:
• Full polyphony via divide-down architecture
• Dual oscillators per voice with detune and vibrato
• Cello and Violin voices with ensemble (chorus) effect
• Brilliance and sustain controls
• 49-key keyboard
Included:
• Main unit
• Original power cable
This is a rare chance to own a piece of analogue history with real studio and stage provenance. Ideal for collectors, synth heads, and producers chasing authentic late-70s string textures."
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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
