MATRIXSYNTH

Thursday, August 20, 2026

E-mu Proteus/3 World 16-Bit Digital Sound Module

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E-mu Proteus 2000 Rackmount Sound Module

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Arp Axxe Analog Keyboard Synthesizer

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Ciat-Lonbarde Tocante Studworth Bistab with Speaker Mod built by crucFX

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Roland CR-68 CompuRhythm with Tauntek MIDI Mod SN 822170

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Roland AIRA System-1

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"Fully tested, perfect working condition. PSU not included.

Keyboard contacts have been cleaned, although Key E needs extra force to play. Key E marked with blue tape as pictured."

Roland SH-101 with Original Soft Case SN x07014

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"Fully tested, perfect working condition.

Recently serviced with the following replaced:

- 5x Sliders
- Pitch Bend Potentiometer
- Power switch"

How to make a Morphing Filter with TRACE // DivKid & Vostok Instruments


video upload by DivKid

"Inspired by a comment asking if Trace could take static filter mode outputs (LP, BP, HP etc) and add a CV controllable mode/filter type morphing to those outputs ... here's a video that does just that!

With 4 community favourite filters (thanks to the QOTD in the DivKid Discord) and 4 examples going from smooth filter mode shifts, through rhythmic sequenced filter type changes, creating a unique tone shifting VCA response out of a Wasp filter and going complex and abstract with filter pings for the finest discerning filter ping connoisseurs out there."

Trace demo // • Waveform Scanning & Modulation Morphing //... [posted here]
Expand your VCOs with Trace // • Expand your VCOs with TRACE // 5 Technique... [below]

*TIMING INDEX // CHAPTERS*
00:00 Hello & previews
00:54 What are we doing here?
03:00 Beautiful filter type morphing with polymetric duophony
Joranalogue Filter 8
08:18 Exciting rhythmic filter mode sequencing
Make Noise QPAS
12:16 Expanding the idea into a unique sound morphing VCA
Doepfer Wasp
16:05 Slowed down “zoomed out” unique VCA response
Doepfer Wasp
17:53 Abstract & complex west coast filter pings + thick bass!
Instruo I-047
21.17 Mixed modulation of morphing
22.46 Adding FM tones

Waveform Scanning & Modulation Morphing // Trace by DivKid & Vostok Instruments

Kawai K1m Editor: Edit Patches, Manage SysEx & More


video upload by Ian Dixon

"In this video I show my free Web MIDI editor and librarian for the Kawai K1, K1m and K1r, designed to make it easier to manage patches, build libraries, send sounds to the synth and edit programs from a browser.

The Kawai K1 family is easy enough to program from the front panel, but the limited memory slots make patch management awkward once you start collecting SysEx banks or creating your own sounds. This editor lets you load and save libraries, import SysEx files, remove duplicates, read patches from the K1, send sounds back to the synth, mute individual sources and edit key parameters with a visual envelope display.

Get the editor at:

https://thedigitallifestyle.com/w/TDL...

Chapters:
00:00 Kawai K1 editor-librarian overview
00:37 Free Web MIDI tool and why I built it
01:00 Enabling MIDI and choosing ports
01:15 Reading patches from the K1
01:28 Importing SysEx and building a library
02:02 Loading a full patch library
02:13 Sending sounds to the K1
02:48 Editing patches and viewing envelopes
03:19 Muting sources for sound design
03:43 Choosing waveforms and samples
04:15 Real-time editing and saving changes
04:48 Searching patches
05:08 Free download, feature requests and DW-8000 editor preview"

Lambda Synthetics Polypulse Algorithmic Performance Workstation SonicLAB Demo


video upload by sonicstate

"​‪@matthsmatthsmatths‬ looks at the Lambda Synthetics Polypulse, a powerful Algorithmic Performance Workstation with five tracks. Each track has an algorithmic sequencer, a polyphonic synthesis engine (subtractive, FM, additive, resonator, quad, granular or external), audio effects, and XY morph pads.
Connectivity includes eight outputs, four inputs, MIDI, Ethernet, per-channel pulse outputs and clock in.
The sequencer decouples pattern from pitch, offering four lanes per pattern, up to 24 patterns per track, and a shared note list with per-note chance, slides and rests.
Effects run per track or on a send, and includes a ducker for sidechain compression.

Matt loads samples over Ethernet, sequences a Dreadbox Artemis with MIDI, and maps MIDI CCs to the twelve dials.

Polypulse costs £1777/€1999 and is available now"
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