"The Sequential Multitrak (released in 1985) is a six-voice analog synthesizer notable for combining true analog sound with early digital control.
Each voice has a CEM3394 synth-on-a-chip, offering a single oscillator, sub-oscillator, noise source, and resonant low-pass filter. It was one of the first affordable synths to feature a built-in sequencer and MIDI implementation, making it popular for both studio and live use.
The Multitrak’s panel and parameter editing system allowed deep sound design, though programming could be a bit tedious. Its warm, punchy tone and distinctive Sequential character make it a cult favorite among vintage synth enthusiasts today.
This one works like a charm and has that analog warmth you've been looking for in a polysynth."
Note: links to listings are affiliate links for which the site may be compensated.
Dead Roland Juno 106 Repair - Synthchaser #178 video upload by Synthchaser
"An outstanding stereo SID track made by Flex (Antti Hannula) of Artline Designs in 2020.
Played back using quadchained midiphy zetaSIDs with a slight amount of hardware unison detune to slightly thicken the mix :). The MIDI ASID signal is provided by a midiphy nexusMIDI expander connected to an Elektron TM-1 MIDI Interface in Turbo MIDI mode to provide the bandwidth required for dual channel ASID playback.
Visualization support by a tiny six inch Sony PVM 6041QM CRT.
Thanks for watching and listening!
Best regards,
Peter/Hawkeye
https://www.midiphy.com/"
"LIQUID SKY d-vices SMUDGETIZER PRO 2 bit bitcrusher desktop multi FX at this year’s SynthFest France, the Liquid Sky artistcollective from Santana dada Serra, Portugal launches the first chapter of a new experimental desktop multi fx series built in the beloved zen delay format.
all units are handcrafted in Santana dada Serra and designed to connect worlds: cv / gate inputs meet midi clock–syncable modulations - engineered for maximum audio wreckage.
this is not about polite breadnbutter effects: our d-vices are sonic troublemakers for bad ass artists, noiseheads and experimental sound labs.
the series begins with the SMUDGETIZER PRO 2bit bitcrusher — a beautifully destructive stereo machine with integrated lfos, ready to bend, fkk up, break, and reassemble your sound into something floor-shakingly new and evil.
developed by Thilo Goldschmitz, it works with pretty much anything you throw at it: guitars, bass, drums and drum machines, synths, voices, worldreceivers and of course… noise.
a eurorack version is coming too: 40 hp wide. yes, we know that’s a lot of rack space. yes, it’s intentionally big. we love instruments you can actually play. no, we’re not making a smaller version. and yes, we’re friends… but you don’t have to remind us every five minutes that it’s a lot of rack space. <3 :)
the eurorack edition will be available in autumn.
price for the pedal: 299 eur plus vat plus shipping."
"Check out SynthStamp, our new app celebrating the history of electronic music, featuring fully modeled engines and familiar user interfaces behind some of the most influential synthesizers."
"SynthStamp is a celebration of the history of electronic music, featuring fully modeled engines and familiar user interfaces behind some of the most influential synthesizers. Tap and drag to patch, save your patch as a preset, and export presets to share across all of your devices including Mac, iPhone, and iPad. Yes that’s right, iPhone. Take your sound anywhere.
INSTRUMENTS
5001 Analog Synthesizer — based on the ARP 2600
B500 Sampling Keyboard — based on the Casio SK-1
All synths are modeled. For the SK-1, the sample engine is modeled, making this synth technically sample-based outside of synthesized partials mode. Circuit bending is free within a fixed set of points that can be patched in any combination to achieve a variety of effects you would get with real bending.
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KEY FEATURES
- AUv3 compatible
- Full MIDI support
- Stereo audio input
- Share presets across all devices
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ABOUT
SynthStamp is made by The Musicology Group, Inc., the team behind AmpStamp. Release 0.9.
WIDI Evolution: New Firmware Sets Benchmark for Wireless MIDI Performance
CME announces the release of WIDI firmware v2.6.0, a major update that significantly improves timing stability in wireless MIDI applications. With this update, WIDI achieves sub-1 millisecond jitter in WIDI-to-WIDI connections, setting a new benchmark for wireless MIDI performance.
In addition, grouped connections benefit from up to 60% lower latency, delivering a more stable and reliable experience in complex setups. Over the past six years, WIDI has become one of the most widely adopted wireless MIDI solutions, with more than 250,000 devices in use worldwide. The platform is used across live performance, studio production, education, and mobile music creation. CEO Zhao Yitian: “Wireless MIDI has always been about removing barriers without compromising performance. This progress is the result of long-term engineering focus, combined with real-world feedback from musicians. It sets a new reference point for what wireless performance can be.” Key Highlights Sub-1 ms jitter (WIDI to WIDI, Low Jitter Mode) Up to 60% lower latency in grouped connections Improved MIDI clock stability and timing consistency
The update is available free of charge via the WIDI App and supports the full WIDI ecosystem, including products from partners such as Korg, Kurzweil, Nektar, Limex, Xvive, ESI, Artesia and others. Given the scale of the WIDI user base and the technical significance of this update, this release is highly relevant for musicians, developers, and the broader music technology industry.
Availability Firmware v2.6.0 is available now via the WIDI App.
"The Kawai K5000W is a 61-key digital synthesizer workstation released in 1996, known for its powerful Advanced Additive synthesis engine capable of producing complex, evolving textures and detailed digital sounds. The “W” model includes an onboard 40-track sequencer, PCM sample playback, General MIDI compatibility, and Kawai’s Auto Phrase Generator (APG) for composition and songwriting."
"A xylophone played using 5 solenoids that strike the bars mechanically. Each solenoid is controlled via MIDI with an Arduino.
The MIDI notes are generated by the Bloom script running on a Norns Shield, creating constantly changing patterns.
The audio is processed in real time through a Chase Bliss MOOD MKII pedal for added texture and atmosphere."
Click the auction link on top when you get there for additional listings.
"360 SYSTEMS DIGITAL KEYBOARD Incredibly rare early 8-bit sample-based keyboard (1982-1984, only 200 made). This is the Mark 2 type, with MIDI. Excellent condition apart from light scratches on the wood panels. Comes with printed manuals (1st and 2nd editions), parts catalogue, service history (maintenance done since the current owner bought it in 2005 - and since then only played it in his home studio).
12 of the 16 voice sockets contain voice chips as follows: 1 Flute / 2 Gut String Guitar / 3 Bass Guitar / 4 Slap bass / 5 Electric Guitar / 6 Electric Piano / 7 Clavinet / 8 Saxophone / 9 French Horn / 10 Trombone / 11 Dark Trumpet / 12 Bright Trumpet.
All functions are working fine except for one problem: This is an 8-voice keyboard, but if you play more than 6 notes at once, the 7th note produces a distorted sound. It seems that the 7th out of the 8 voices is faulty (doubtless due to deterioration of a vital part - no physical damage has been done to this carefully used machine). If it can be fixed or muted, you will have an incredible instrument with rich, organic tones. In any event it is perfectly playable if you respect the current voice limitation.
LISTEN! You can hear the sound of this actual instrument (arpeggios played with all 12 voices from bottom to top of the keyboard) HERE: [embed above]
Quote from a well-known pro user: 'It sounds AMAZING, the only sampler with enough character to rival a Mellotron or Chamberlin. My favorite French horn patch of all time!'"
I managed to set up a temporary working studio in a spare room so I can work while I build the new proper studio
Luckily the Neve survived the enormously traumatic move to the new place!
I've spent the week patching up the patch bays and FX units and mic preamps and monitor speakers - and re-learning the mysteries of MADI and MIDI routing"
Click the auction link on top when you get there for additional listings.
"Korg Poly 800 II Hawk expanded (Sysex, MIDI CCs for all parameters, Arpeggiator, Unisono, 4x sound banks, MIDI Velocity, 4 LFOs, etc.) and Atom Hawk (extreme resonance, Filter FM) https://www.hawk800.com . It has to run the boot sequence twice (see pictures) due an minor error in EPROM (the Hawk author recommends to flash new OS, since it was a factory mistake due new OS version launch), but it does not affect the functionality (after two boot sequences + 3 seconds, it runs fine)."
1. Glou-Glou "Bien Jolie !"
2. Glou-Glou "Bien Jolie !" Introducing
3. Glou-Glou "Bien Jolie !" - Controlled Randomness
4. Glou-Glou "Bien Jolie !" - Mineapolis Beat
5. Glou-Glou Bien Jolie ! - Sound Only / No Talk by Stazma
6. Explaining and testing Bien Jolie ! by Glou-Glou by Stazma
7. Glou Glou's Bien Jolie! as an insert with Tonverk. So many tones. by keinseier
Details:
9V DC 200mA PSU (not included)
Relay-bypass available via external footswitch (no built-in bypass switch)
Passive expression pedal input for direct performance control of parameters
"The Mask1EX desktop synthesizer is back, with new looks and new features! Mask1EX MK2 offers 14-voice polyphony with two Bitmask oscillators for each voice - Bitmask Synthesis is exclusive to all Kodamo's Mask synthesizers, it produces a wide range of unique tones by using a single number as parameter. Mask1EX MK2 also has built-in effects, a looper, an arpeggiator and much more."
"It is back, with a totally new design, more powerful than ever! The Mask1EX is a desktop synthesizer that you can use with your keyboard, DAW, sequencer or any other gear with MIDI. Like other Mask synths, it is based on our exclusive Bitmask synthesis technology which generates up to 512 different waveforms for oscillators. It offers 14-voice polyphony with two Bitmask oscillators per voice and 2x2 parts of multi-timbrality (two parts of single or dual layered voices). Each part comes with stereo effects to make the sound warm and rich, plus a master effect with delays and reverbs.
Like the Mask1 keyboard, the Mask1EX MK2 offers an incredible playing experience with its dynamic articulation system. Try the slurred, poly-mono and hybrid modes, they add a new dimension to keyboard playing, changing how the sound behaves as you play legato, staccato, neighbor notes or wider intervals.
Mask1EX MK2 is powered by USB-C and is extremely efficient with 1.5W of power consumption, which makes it easy to power by a battery, laptop or smartphone. USB supports class-compliant Audio and MIDI. We also included good old DIN MIDI ports for compatibility.
Mask1EX MK2 offers high-end features at a fair price, with balanced stereo outputs, 200 memory slots for your own sounds, 377 factory presets, full CC mapping of all synthesis parameters, customizable velocity and aftertouch curves, and a lot more.
Inspiration does not wait, so we optimized the Mask1EX MK2 to be extremely quick at startup, it starts in 0.5 seconds. Press ON and play! And it remembers the last sounds you used.
This Jade Vine limited edition gets you a stylish turquoise steel enclosure and a colorful front panel.
Your unit is fully assembled by hand in France, except for surface-mount electronics.
What's in the Box: Mask1EX MK2 synthesizer
Printed quick start guide (refer to MASK1's user manual for detailed operation) USB Power supply with EU, UK, US/CA/JP and AU/NZ plugs. If you have no matching plug for your country, you have to use your own power source. Any phone charger or device with USB port will work.
0:00 intro
1:05 the interface
5:00 Envelopes… they drive the sequencer
7:55 Sequencer Patterns and Lengths
9:33 A note on Modulation
11:10 Quantisation, MIDI, BPM, voice modes
12:06 MIDI Control
13:22 Load/Save
14:10 Genius or Insanity?
"In this deep-dive demo and review, I break down what this mad-looking, semi-modular digital synth actually does — and more importantly, how to use it musically. Combining additive + subtractive synthesis, generative sequencing, and BPM-linked envelope timing, this thing is capable of everything from controlled melodic patterns to chaotic, evolving textures.
If you’ve ever wondered how far modern digital synthesis can go — this is it.
Rather than just listing features, this video explains the concept behind Kaleidoscope — how its AD envelope “period” drives sequencing, how voices interact, and how you can build complex evolving patches from simple ideas.
🔥 What You’ll Learn
How Kaleidoscope’s generative sequencer actually works
The role of AD envelope periods in rhythm + timing
Creating evolving patches using voice interaction + end-of-cycle triggers
Using additive, subtractive & wavefolding synthesis together
How modulation, quantisation, and patterns shape musical output
🎛️ Key Takeaways
This isn’t a typical synth. It’s closer to a self-evolving modular system in a box, where:
Timing is musical, not arbitrary
Events trigger other events
Chaos can still stay in key
As mentioned in the video, this is not beginner gear — but if you like to go deep, it’s incredibly rewarding"
Meet Glitch Boy: a compact instrument that turns 8-bit games into live glitch visuals and doubles as a chiptune synthesizer.
Inspired by hacked consoles, Glitch Boy recreates those hardware corruptions and lets you control them precisely"
Some additional info via Martino, the creator of Glitch Boy, followed by the press release:
"Glitch Boy is an hardware instrument that turns NES-compatible ROMs into glitch video synthesis material and also doubles as a 4 voice chiptune synth.
Basically a hacked retro console, both desktop standalone and for a Eurorack system.
It has hands-on controls for real-time glitching, MIDI, audio reactivity, composite video out, CV input, and both standalone and a few more fun things.
It's a project I have been developing since last year for my brand Melted Electronics, under which I have released glitch devices for 5+ years."
We’re launching it on Kickstarter on April 14th."
Press release:
"Glitch Boy by Melted Electronics
Glitch Boy is an audiovisual instrument for glitch artists, musicians, and experimental image makers.Inspired by hacked retro consoles, It loads NES- compatible ROMs from microSD and lets users manipulatetheir graphics and sound in real time using onboard controls, MIDI, audio input, or CV.
It also functions as a 4-voice chiptune synthesizer, and is available in both standalone and Eurorack versions.
Quick facts
Loads NES-compatible ROMs from microSD
Real-time glitch control via knobs and buttons
MIDI input for automation and controller mapping
4-voice chiptune synth engine playable via MIDI
Audio-reactive glitching via line input
2x CV inputs for Eurorack / modular integration
NTSC and PAL composite video output
Open and hackable firmware
Available in standalone and Eurorack versions
Launch details
Launches on Kickstarter: April 14, 2026
Early Bird price: €150
Standard price: €170
Estimated shipping: Early Bird June 2026, general July 2026
"This is the new Public Domain SID or PDSID by Matthias. I hope to be able to make and supply these with MIDISID. In the mean time, they're available direct from him and can easily be fitted.
"The Roland MKS-7, also known as the "Super Quartet" is a vintage, multi-timbral rackmount synthesizer module from the '80s that packs a lot into one unit: combines sounds and architecture from the Juno-106 (for melody, chord, bass parts) with drum sounds from the Roland TR-707, all in a single 2U box.
Features four separate MIDI-controllable sections (Melody, Chord, Bass, Rhythm), allowing you to play drums, bass, pads, and leads simultaneously, making it a versatile, all-in-one vintage sound source for MIDI setups.
This unit has been fully tested and includes AC power cable."
This editor has taken me forever to complete! It's by far and away the most advanced one I've built yet, featuring 90 or so sliders. I'd had no experience with Phase Distortion Synthesis before starting this project, so it meant reading a few books and watching hours of you tube videos. There's bound to be a few bugs, but it beats using the single button on the hardware to program the unit.
The UI has also been designed to shed some light on how to program it, with panels being highlighted when accessible, and animations to convey what is being changed. Hopefully it should help somebody. Every control has it's function listed, you just need to hover the mouse over it.
Here's a short youtube video going over some of the features.
It's completely free and works through the browser, you just need to plug in your CZ-1 into your pc or phone. Safari unfortunately isn't supported because Apple doesn't allow midi data transfer, but it should work well on most other platforms."
