MATRIXSYNTH

UDO Audio Super 6 12-Voice Polyphonic Binaural Analog-Hybrid Synthesizer w/ Original Box SN S614426

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via this Reverb listing

Additional SYNTH CITY Listings

"Gently used UDO Super 6, includes original packaging and AC power cable. So clean it could pass for new!"

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Ensoniq Fizmo Transwave Digital Synthesizer

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via this Reverb listing

"Excellent Fizmo ready for a new home. Plays great with excellent feel synth action keys. Serviced a couple years ago, this board has many years of life ahead of it. All knobs respond to fine control, and input/output is clear.

Unit comes with PSU and manual."

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Oberheim DX with factory MIDI

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via this Reverb listing

Pics of the inside below.

"This Oberheim DX has been equipped with MIDI from the factory, and has been fully restored electronically. Every button and switch has been desoldered from the board, cleaned in isopropyl alcohol, and treated with Deoxit D100. All sliders cleaned and treated with Deoxit. Has a new RAM backup battery installed (in a new off-board holder), as shown in the photos, and all factory patterns have been reloaded. Works flawlessly. Has firmware version '2'."

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CORDOVOX FREEMAN MODEL CSS STRING SYMPHONIZER B40930R

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via this eBay listing

"This is a used Cordovox Freeman model CSS String Symphonizer. It measures 8x23x38 and weighs 76 pounds."

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Bastl Kastle Arp #26 (with Kastle Synth and PO-12 rhythm)

video upload by alloutofsync

"Jamming again with the Kastle ARP and my synth — it’s been a while!

0:05 Patch note

Anyway, I hope you enjoy. Thanks."

QU-Bit Bloom V2 – The Eurorack Sequencer That Grows on You

video upload by Starsky Carr

"The QU-Bit Bloom V2 Eurorack Sequencer takes generative sequencing to the next level — with three independent channels, expanded modulation options, and up to 64 steps per pattern. In this deep dive, I explore how each channel (Blue, Green, and Red) works, show how to program sequences, use the modulation output creatively, and reveal some of Bloom’s new tricks for melodic and rhythmic variation.

If you’re into modular synthesis, this update is a big deal — flexible, musical, and seriously fun to use."

0:00 Overview
0:52 Per Step Parameters
2:37 Shift Functions
5:43 Branch Path and Mutate
9:28 Knob Modes
13:31 Modulation
18:28 Config Settings & Narwhal

Strymon SuperKar+ Review

video upload by Molten Music Technology

"A super-stringy, super-pipey Karplus Strong module with up to 32 voices. SuperKar+ combines a Chord Voice with a polyphonic Solo Voice for a spectacularly useful module that's oozing texture and organic tones."

Index:
Intro - 0:00
Overview - 8:43
MIDI Input - 10:04
CV/Trigger Input - 11:26
Glide - 12:26
Polyphony - 13:19
Tonal Controls - 15:31
Attack - 19:33
Pipe Timbre - 23:44
Chord Voice - 27:16
Chord Voice and Solo Voice together - 30:47
Outputs - 36:00
Modulating - 42:43
Audio Input - 48:16
Bonus MIDI + CV mode - 51:43
Conclusions - 53:47

Similis - self sequenced

video upload by DecadeBridge

"Similis is a lo-fi synth that has several different patches. Here it is set to run a random sequence over a major or minor scale. This preset can be switched between 1 or 2 oscillators, each playing a random note independent of each other.

Pot A/CV in A sets the root note.
Pot B/CV in B sets the range of notes of the chosen scale.
Pot C/CV in C sets the rate of the sequencer (controlled using an envelope generator in this example)
Switch A sets the waveform (Sine, Saw or Square)
Switch B has 3 different settings (Stop the sequencer playback on its current note, run the sequencer, run the sequencer and add an additional synth voice.)
Switch C sets the scale."

https://decadebridge.etsy.com/uk/

Similis - Detune

video upload by DecadeBridge

"Similis is a lo-fi/chiptune style synth consisting of several different presets.
This Similis patch stacks 3 oscillators and detunes them against each other.

Pot A/CV in A controls the root note.

Pot B/CV in B controls the detune of the other 2 oscillators.
Pot C/CV in C controls the level of the 2 additional oscillators.
The root note pitch is being controlled by a random scale from Pam's Pro Workout.
Here an envelope generator is controlling the level of the detuned oscillators through CV in C.
Switches A B and C change each oscillators waveform (sine, saw, square)"

Sam Barker & Cycle Instruments Tetrachords – Workshop ‪@schneidersladen_berlin‬

video upload by SchneidersLaden

"On September 18, 2025, SchneidersLaden hosted a very special event: musician and producer Sam Barker presented the extraordinary Eurorack module Tetrachords, joined by Josh from Cycle Instruments.

Sam Barker is known for his inspiring and unique performances – if you’ve seen his set at Superbooth, you know how intense and original his music can be. In this workshop, he shared some of his creative techniques and insights into his process.

At the center of the evening was the Tetrachords: a polyphonic CV & MIDI note sequencer featuring four flexible tracks, a powerful modulation matrix, CV and trigger inputs, MIDI over TRS & USB, i²c connectivity, and SD storage for songs and patterns. Perfect for complex harmonies, arpeggios, or polyphonic sequencing – versatile, intuitive, and deeply musical. Josh from Cycle Instruments added unique perspectives on the development and design of Tetrachords. This made the evening not only a performance, but also a deep dive into creative workflows and innovative instrument design.

Whether for inspiration, learning, or simply enjoying – here’s the full workshop recording."