Sequential Prophet-6 & Roland Juno-6

video upload by Fading Capture

Sequential Prophet-VS Vector Synthesizer SN 0939

Note: Auction links are affiliate links for which the site may be compensated.

via this Reverb listing

"This is a Sequential Prophet-VS in excellent working condition, professionally serviced and tested by a former Sequential engineer in Japan.

Cosmetically rated "Good" due to minor touch-up spots visible on the surface.

These areas were professionally treated to prevent rust and ensure long-term durability.

Functionally, the unit performs excellently (except for aftertouch).

✅ Key Features:

LCD backlight replaced – bright and clear, with auto-off after 5 minutes of inactivity. Reactivates on touch.

Factory programs and waveforms fully restored – original Vector synthesis presets are ready to play.

Velocity-sensitive keyboard fully functional.

Aftertouch is currently non-functional due to a failed pressure sensor.

The part could not be sourced during service, so it was left as-is.

All other keyboard functions, including velocity and general playability, are working perfectly.

All sliders, buttons, and the joystick operate smoothly.

No audio issues, tuning is stable and accurate.

Internal memory is backed by a good battery – no patch loss."

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Roland CR-8000 CompuRhythm analog drum machine / CR-78 TR-808

Note: Auction links are affiliate links for which the site may be compensated.

via this Reverb listing

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Commodore Custom Built Circuit Bent Synth with Cynthcart and Screen

Note: Auction links are affiliate links for which the site may be compensated.

via this eBay listing

"Listing is for a custom built circuit bent commodore synth with cynthcart and screen. This custom build device was made around 2009 and has been used a few times but mostly stored. Honestly forgot I had it. If I recalled I think the purchase price was around 600 from the person who built it.
Some of the knobs are blank for future wiring mods. The ones I checked I listed on with tape. Octave changes, Volume knob, Filter on off switch, Filter cutoff. The cynthcart is the sound module on a card for the commodore sounds and can be played on the darker keys. The device works and was tested before listing however since this is a custom build some functionality may vary. It played sounds and sounds as I remember.
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Listing is being sold AS IS so if there are any questions please just ask.
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Functionality for the cynthcart I found is listed below.
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cynthcart is a cartridge I developed for the Commodore 64 computer that turns it into a standalone analog synthesizer with MIDI support. The Commodore 64's SID is one of the most interesting 8-bit sound chips of all time, and I was unsatisfied with the available SID synthesizer software. Cynthcart supports the original Commodore 64 piano keyboard overlay (shown below), and MIDI interfaces by Datel, Passport, Sequential, and Kerberos. Cynthcart's key-command user interface allows it to be played and controlled without a monitor, making it especially suitable for live performance.
FEATURES:
● 30 preset sound patches
● Arpeggiator, portamento, vibrato, and tremolo effects
● Analog filter control and effects
● Control of attack, release, and other sound parameters
● MIDI support including pitch bend, patch changes, and controllers
● On-screen help
● Color visualizer display
● Mono stack, 3-voice mode, and 6-voice mode (with second SID)
● No latency
● SID hex editor for advanced users
● Ability to turn off video chip to reduce noise
● PAL and NTSC pitch tables with automatic selection
● Copies itself to RAM (cartridge can be removed after booting"

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Roland PMA-5 Portable Sequencer with Stylus Case Power Supply and Owner's Manual

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via this eBay listing

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Exploring Elektron Digitone II

video uploads by Elektron

Playlist:
1. Exploring Wavetone - Digitone II

Join us as we walk you through the epic Wavetone machine on Digitone II, explaining this two-oscillator synth’s parameters one by one for a glimpse of its super flexible waveshaping possibilities.

2. Exploring Swarmer - Digitone II

Let’s jump into the Swarmer machine on Digitone II, and explore how each parameter affects your sound on this two-oscillator synth.

3. Exploring FM Drum - Digitone II

We check out the FM Drum machine on Digitone II. This three-operator synth is capable of all kinds of percussive and melodic sounds, and we go through how each and every parameter can be put to use.

4. Exploring FM Tone - Digitone II

We talk you through the FM Tone machine on Digitone II, getting to grips with the basics of this versatile four-operator synth and its powerful parameter controls.

Chunk Systems Agent 00 Funk Envelope Filter & Emu SP1200 - MikeSynth

video upload by Mikus Pilatus

"My favourite envelope filter pedal doing its thing .
It’s a bit dull / rolled off - but still sounds great"

Silhouette SPORT meets Roland JX8P

video upload by SILHOUETTE-SYNTHESIZERS

"The audiovisual synthesizer SILHOUETTE SPORT transforms visual sources (pics, movs, camera) into audio waves and sequences.
In this video the sequences are being sent to the analog Roland JX8P (1985).
More infos:
https://silhouettesynthesizer.cargo.s..."

Complex System

video upload by Memetune Studio

"I was wanting a way of setting up an interactive environment to record sounds from some modular systems which could be the basis for some improvised performance based sound explorations

I figured that if I set up some cybersynth patches (ie patches that are evolving by themselves in some way, or are at least dynamically varied over time) and could record some long stereo samples (loops) that could be manipulated live, this might be an interesting thing to do

It occurred to me that the Octatrack, which I got a few years ago and use as a granulating sample mangler, might be perfect to pair with the modulars in this way

The thing about the Octatrack is that it is so unbelievably deep and sophisticated that it can be very difficult to set things up on. I see it as a truly Complex System (AI Overview definition: Complex systems are characterized by numerous interacting parts and emergent behaviors that are not readily predictable from the individual components) and the user manual is utterly hopeless beyond a very basic overview

With the Octatrack you have to basically tell it what you want to do for any given situation. You create a personalised environment inside it and then work within the limitations you set yourself. You have to think of a setup that you want to create, then you build it for yourself using all the different components. In other words, it's not a preset environment that does a few specific things, you have to decide what you want then make it yourself

So I thought it would be useful to have 4 stereo 'Tape Machines' that can be manipulated in real time, with control over the following in each: Pitch, Playback Speed (Timestretch), Direction (forward / reverse) basic Filtering (bandpass) and Delay with feedback. All the things you might find in a Musique Concrete studio in the 1950s (with the addition of granular timetretching)

I might do a more detailed breakdown of the Octatrack patch in the future, but I wanted to live with this setup for a while and make sure it does everything I want it to do in the most efficient way first

This is my first experiment with it, using the Buchla 200. There are two stereo outs from the Buchla - two independent patches running concurrently - going into the Octatrack's dual stereo inputs. These are then fed into the four "tape machines" I created in the Octatrack, which mixes them into one stereo output along with the two live feeds from the Buchla (so what you are hearing is a live mix of the Buchla's 2 voices plus 4 tape loops (30 seconds each) recorded as we go along from the Buchla. As I said, its a complex system 😁"

Buchla 200e Program Switch

video upload by verstaerker

"Initially, a straightforward sequence runs without any preset morphing or remote program changes.

After we heard the sequence a bit I connect the trigger outs of the 252e to the 225e Program Manager. At this point, you’ll hear the two VCOs begin to switch through their stored presets in sync with the trigger pulses — while the rest of the system remains unaffected, as only the VCOs are assigned to respond to remote program changes.

I’ll continue refining this setup with more modules enabled for remote control, and dial in more purpose-fit sounds to push this concept further.

Delay courtesy of the Strymon Volante, adding some extra flavor."