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."
Click the auction link on top when you get there for additional listings.
"Roland Juno-60 61-Key Polyphonic Synthesizer with Minerva MIDI All perfect working condition. Some cosmetic marks here and there but overall condition is fine. New wood panel installed (also included the original one) Be in mind VAT/TAXES MUST APPLY for those buying outside European Union. Shipment from Spain is 60€"
"This is my first time playing with the WAEVE82 wavetable synthesizer from tangible waves. Here in the VF mini package complete with full MIDI and audio connectivity and MultiFX module for lush reverbs, shimmers and a dozen other effects. I'll make more tutorial style videos over the next few weeks, but wanted to give you a taste of what it sounds like. Personally I think it sounds amazing, but you be the judge!
This module can be found at the tangible waves website:
https://tangiblewaves.com
All sounds recorded directly from the rack into my H6 recorder with minimal EQ and compression in Da Vinci Resolve."
Novation Launchkey Mini keyboard controller in the video.
The Sh*t Synth - Walkthrough video upload by CROW HILL XTRAS
Press release follows:
The Crow Hill Company turns to extensive and rare collection to turn out THE SH*T SYNTH as compendium of 48 circuit-, wave- and sample-bent instruments
EDINBURGH, UK: The Crow Hill Company is proud to turn to its own extensive and rare collection of hardware to turn out THE SH*T SYNTH — available as a compendium of 48 circuit-, wave- and sample-bent instruments inspired by some of the Edinburgh-based enterprise’s eclectic musical favourites (spanning the likes of Aphex Twin, Boards Of Canada, Joe Maus, Jon Brion, Laurie Spiegel, Radiohead, Throbbing Gristle, and Yazoo) to create something that they collectively ask: is it just shit or ‘the shit’? — as of April 7…
Whatever way anyone chooses to read into the titling of THE SH*T SYNTH as the latest entry into The Crow Hill’s ongoing ORIGINS series of sample-based virtual instrument plug-ins, one thing is for sure: it readily represents a broad selection of three categories of 16 workhorse instruments each, effectively wrapped up into a single plug-in designed to bring a cohesive approach to making music more edgy, lo-fi, retro, and — swimming against the technological tide of so-called progress — decidedly AI (Artificial Intelligence) slop-free. From pianos to strings, plucks, beeps, bass, and pads, the compendium that is THE SH*T SYNTH has been lovingly sculpted by the Edinburgh-based enterprise’s media composer and ‘samplist-in-residence’ Christian Henson to take the hassle out of making existing sounds less refined, catering to those looking for an entirely new bank of Mellotron-style sounds as well as synths that have been long forgotten — for good reason, too!
"One of the earliest MIDI capable drum machines, the Sequential Circuits Drumtraks is punchy, unique, and will integrate effortlessly into a contemporary studio. The sound of this thing is fantastic, with 13 8-bit sample based drum sounds and a powerful pattern sequencer. This drum machine is fully tested and in great working condition. Serial No. 06298"
"::| TO HEAR THE FULL RANGE OF FREQUENCIES AND STEREO EFFECTS, A GOOD PAIR OF HEADPHONES IS HIGHLY RECOMMENDED |::
As the title states, I just wanted to show how you can sequence the @KORG_INC Phase8 with @Ableton Live. I used three MIDI tracks to sequence the Phase8, with each MIDI track played live into Ableton via my Waldorf Quantum (as my main controller.) I also added some quick, rough film score elements towards the end to show the Phase8 in a full musical context."
Click the auction link on top when you get there for additional listings.
"This collection of vintage synthesizers has grown with me for years. Most all of these instruments have been used on many projects, including VeggieTales, a variety of remixes, and many PlayStation video games and marketing and promotional discs. Most recently they were used on the Mass Effect Andromeda video games soundtrack. They have also been sampled and are part of the SoundVault Collection and the Kurzweil Analog Collection for the K2000 series samplers. VEMIA note: to forestall many inquiries, The seller’s idea is that he wants to sell it as a whole. That may or may not work out in this auction. If it doesn’t, obviously he’ll be free to do whatever he wants after the auction finishes.
It all works. Everything has been kept in a clean, smoke-free, climate-controlled studio. I have always fixed things myself, so everything is operational and sounding great. I have repair notes on the synths that received attention, though most of them have worked great over the years, without much need for repairs. There are also several MIDI to CV converters so they can all be controlled by computer, plus cables if desired. And a few have cases and manuals.
ARP 2600 with lid but no keyboard. Pictured with broken slider and missing caps, but I believe I have them. ARP Odyssey (White) ARP Odyssey (Black & Gold) ARP Odyssey (Black & Orange) ARP Avatar (Original with pickup) (No original knobs, but early rubber caps if you want) ARP Avatar (CMS modded with patchpoints, filter, and envelope) (No original knobs, but early rubber caps if you want)
Chroma Polaris
Crumar DS-2
EDP Wasp
Electro Harmonix Super Space Drum Electro Harmonix DRM 32 Digital Rhythm Matrix
Moog Liberation with rack power, cable, and case Moog MiniMoog Moog MemoryMoog Plus with MIDI and case Moog MicroMoog Moog MultiMoog Moog Opus 3 Moog Prodigy Moog Sonic Six (The case is poor, but the synth panel looks great) Moog Taurus with case
Oberheim Matrix-6r Oberheim OB-1 Oberheim OB-8 with Page 2 and MIDI Oberheim OB-SX (This one is probably in the worst physical condition of them all) Oberheim Xpander
Rheem Kee Bass
Roland CSQ-600 Digital CV/Gate Sequencer Roland JP-8080 Roland Jupiter-4 Roland Jupiter-6 with Europa and original box Roland Jupiter-8 with Encore MIDI Roland JX-8P Roland MKS-7 Roland MKS-30 with PG-200 Roland MKS-50 with PG-300 Roland MKS-70 with PG-800 Roland MKS-80 with MPG-80 Roland MSQ-100 sequencer in box Roland SH-1 Roland SH-2 with case Roland System-100 Model 101, 102, & 104 Roland System-100m D Block Roland System-100m Phaser and Sequencer Block Roland System-100m 104 Polyphonic Keyboard Roland TB-303 with Sequentix MIDI and Filter CV
SCI Max SCI Pro-One SCI-Prophet-5 SCI Prophet-600 with GliGli
Star Instruments Synare 3 Star Instruments Synare 4 Star Instruments Synare Sequencer
Yamaha CS-30 Yamaha SK-20
Encore Expressionist MIDI to CV/Gate Kenton Pro4 CV/Gate and DCB and Wasp JL Cooper MIDI IO 8 ch MIDI to CV/Gate
Standtastic wall-mount arms plus cables if you want them."
"Super fun and inspiring little box from Oberheim. The Cyclone is a standalone MIDI arpeggiator designed to pair perfectly with your favorite vintage synthesizers, adding classic rhythmic motion and sequencing possibilities to any MIDI setup.
This unit is in excellent, very clean condition and has been well preserved. Includes the original box as shown.
A great companion for vintage synth rigs or anyone looking to add hands-on MIDI arpeggiation to their setup."
Tabletop interactive MIDI drum pattern sequencer that generates realistic drum patterns in real-time! It contains no internal sounds, but functions as a "brain" to control external drum machines or samplers via MIDI, often used to create varied - non-repetitive, human-like, or complex percussion. A fun little box for sure.
"I dive deep into the raw sounds and harmonic richness of the SED-CSM, a complete analog synth voice from Rides in the Storm. With its dual oscillators, sub-octave generator, ring modulator, and a dedicated noise source, this module provides a massive foundation for everything from earth-shaking bass to evolving drones.
SED-CSM has two LFOs which can go into audio-rate, reaching up to 6.6 kHz and a VCF equipped with a dedicated overdrive switch. The SED-CSM offers endless possibilities for aggressive textures and squelchy, acid-inspired leads.
Complementing this is the QSQ; an 8-channel performance sequencer and MIDI-to-CV interface that serves as the brain of the operation. I show how the QSQ’s 16 analog-style rotary encoders allow for intuitive, hands-on melodic creation. Leveraging features like Euclidean rhythms, per-step probability, and integrated LFO/envelope generation, the QSQ compliments SED-CSM’s raw oscillators.
Timeline: 00:00 Sound demo 00:48 Overview of SED-CSM 04:50 Making a gritty bassline 08:11 Dub-techno chords 10:56 Doombient drones 16:46 Percussive sounds and hihats 17:56 Use LFOs to add hihat ratchets 19:23 Metallic tones and wavefolding 24:41 QSQ sequencer overview 25:34 Adding probability to notes 29:34 Using a sequencer for modulation 30:48 Adjusting a track's playback speed 31:28 MODulation amount 32:23 Using nudge to vary melodies 33:37 QSQ as a MIDI to CV converter 35:22 Mapping velocity from keyboard 36:34 QSQ is a MIDI recorder 38:48 Wrapping up"
"The Quatuor is a kind of 'updated 4 voices Oberheim clone': same vintage analog sound but modern midi interface and a Fatar 5 octaves keyboard with velocity and aftertouch.
2 exemples of monophonic (=unisson) mode:
Layer of reso sweep from 3 solos parts.
Arpegiator in random mode on the left solo and feedback with time/2 on the right solo.
Recorded in a simple UMC 1820 without any traitment except delay/reverb in Cubase..."
"The Luna from Neutral Labs is an instrument built on binary logic.
Taking inspiration from the DIY Lunetta synths of the 70s and 80s, Luna’s core architecture is built using CMOS chips, square waves, logic gates and binary processors. Its design leads to a semi modular instrument where rhythm is just harmony slowed down. Oscillators can be clocks, and the logic gates and binary processing modules can be involved in modulation and sequencing, or as audio processors depending on how fast you work them.
Luna supplements these binary ideas with a number of additional features which take it beyond the Lunetta synths of old, like pitch quantization with multiple scales, pitch sequencing, MIDI control and digital effects, as well as a three channel output mixer with low-pass gates.
In this video I’ll go through the various fundamental sections of Luna, demonstrating how they can be used to influence the synth, both at sub-audio-rate for sequencing and modulation as well as at audio-rate as sound processors, and then move on to a few full patches to explore how everything operates together. Throughout the video I’ll scatter a few other patches of various types to give you an idea of the range of the Luna in different musical settings.
Transparency notice: Neutral Labs Kindly sent this instrument over to me for free for the purposes of making videos about it."
"In the demo, the 218 is used as a MIDI keyboard, while still allowing simultaneous use of all its CV outputs and pulse outputs.
4-voice polyphonic architecture Oscillator algorithm differs from the mono version; poly mode uses a waveform morphing approach similar to the 258 oscillator Output now includes an internal VCA with built-in ADSR envelope, triggered via MIDI keyboard (velocity-sensitive by default) UI updated with a dedicated ADSR page UI updated with a Voice Mode page, allowing selection between: Poly mode (with output compensation) Mono bypass Mono with ADSR Added MIDI CC parameter control
Note: This is a test firmware version (not an official release). Feedback and bug reports are welcome.
#synthesizer #buchla #gmxe #700 fm voice
gmxe.org
ins:wuxiaoen1984"
"Fantastic sounding OB-8 in excellent working condition. This unit has been backline-owned and professionally maintained throughout its life, and remains a strong, reliable specimen. Equipped with MIDI, making it easy to integrate into modern studio or live setups. Includes a vintage Anvil road case with updated foam, ready for studio use or the road.
Recently serviced in-house with a clean bill of health.
Service Notes:
Replaced all electrolytic capacitors
Refurbished panel board; cleaned all controls and switches
Refurbished bend assembly; cleaned all controls and switches
Replaced several failing CEM310, CEM3040, and CEM3320 ICs
Replaced TL084 and CD4051 sample-and-hold components on voice boards
Replaced bridge rectifiers and internal memory battery
Replaced key contacts; cleaned contact PCB and full keybed
Replaced primary C key and (2) sharp keys
This OB-8 is fully functional, stable, and ready to integrate into any studio or touring rig."
"We’re excited to announce a new firmware update for Typhon, bringing improvements that enhance performance, stability, and overall creative experience.
Available Now via our Website!! https://dreadbox-fx.com/support/
New Features ----------------------------------- Added CC out support Reworked CC list to match MIDI CC protocol All Sounds Off / All Notes Off support Reworked Menu System Added Auto Glide menu Added dedicated menus for MIDI CC and MIDI PC Added Master Tune Menu Added preset preview Menu to enable / disable it Added Triplets and new divisions for the Sequencer Added Triplets and Dotted divisions for the Modulators and Delay FX Added support for booting from the last loaded preset
Bug Fixes ----------------------------------- Increased encoder filtering to avoid jumping values Fixed volume drop of firmware v4.1 Fixed Left - Right output channels assignment Smoothed out the blend of Square with Sawtooth wave oscillator Fixed port config in order to not interfere with sysex data during preset backup and restore Fixed MIDI and sysex data handling to ensure proper sysex backup and restore Fixed Save and Load menus to match Program Changes Added filtering to smooth CC stepping Fixed keytrack modulation in order to respond to glide"
Click the auction link on top when you get there for additional listings.
"Oberheim Matrix-6R – Classic Analog Rack Synth Great condition Matrix-6R delivering that classic Oberheim analog sound—warm pads, rich brass, and evolving textures. 6-voice polyphony 2 DCOs per voice 24dB resonant filter Deep Matrix modulation system Bi-timbral (split/layer) Full MIDI (In/Out/Thru) Fully working, studio use only. A powerful and underrated vintage synth—ideal for anyone wanting true analog Oberheim tone with serious modulation depth."
"What happens when a synthesizer completely breaks the rules? In this video, we explore the Genki KATLA — a truly unique polysynth inspired by Icelandic volcanoes, featuring a rotating voice architecture, hybrid signal path, and some of the most unpredictable sound design possibilities I’ve come across.
This isn’t your typical analog polysynth. Each of the five voices can run independently with different waveforms, octaves, and modulation — creating evolving textures, harmonic movement, and generative-style sounds that feel closer to modular synthesis than traditional keyboards.
🎛️ What makes the KATLA special? • Rotating voice polyphony (round robin-style synthesis) • Independent per-voice oscillators & tuning • Digital oscillators + analog filter signal path • Looping envelopes reaching audio-rate modulation • Phase distortion, wavefolding & multiple distortion types • Tape-style wow, flutter & pitch instability effects • Stereo voice movement & evolving spatial modulation • External inputs for processing other gear
From lush ambient pads to aggressive, evolving sequences — this synth can go places most instruments simply can’t. It’s not about recreating vintage sounds… it’s about discovering entirely new ones.
💸 At around €5000, this is definitely not a beginner synth — but for sound designers, and anyone looking for something truly different, it well worth a look."
Genki Katla Sound Design: Making sounds from scratch and exploring
video upload by MR TUNA Music
Chapters: 0:00 - Intro 0:16 - Init patch 0:44 - Filter sounds 1:26 - Raising 1 voice 1:43 - Creating a basic pluck sound 2:24 - Aftertouch controls 2:45 - Bring in a little reverb 2:56 - LFO to filter cutoff 3:16 - LFO to reverb mix 3:46 - Keyboard cutoff 4:00 - Osc 3 Square wave 4:23 - Sub oscillator 4:54 - KATLA parameters 5:01 - Rústir wavefolder 6:08 - Rökkur stereospreader 6:37 - Skriða envelope randomizer 7:27 - Aska random modulations 7:57 - Glóð tape stops and flutters 8:35 - Skjálfti ??? 9:14 - Kvika slow tape modulations 9:38 - dark pads 10:20 - Móða voice detuning 11:20 - Katla sounds with aftertouch 13:28 - Thanks for watching
"Hey guys! Very very excited to be presenting the Genki Katla to you all... I am truly in awe of the sound of this very unique and powerful instrument.
I thought the best way to get to know the synth is to start from scratch so in this video we'll go full hands-on with the Genki Katla, exploring (almost) every parameter and building sounds from an initialized patch.
From some raw drone layers and gritty textures to evolving pads, rhythmic sequences, and atmospheric beds, we will see just what this instrument can do, discover new sounds, and maybe make some friends along the way 🙏
If you're into sound design, unique synths, or just love discovering new instruments, this one is for you!
HUGE thanks to Genki for letting me a part of this with them and showing off this super cool synth.
No money was paid, no agreements were made... these are my real thoughts on this very premium synthesizer and I will be sharing lots more."
Press release follows:
Genki Instruments announces availability of Katla as Voice Rotating Polyphonic Synthesizer inspired by its natural namesake
REYKJAVIK, ICELAND: having twice blown European musical minds thanks to show-stealing showcases at SUPERBOOTH25, May 8-10, Berlin, Germany and Machina Bristronica 2025, September 27-28, Bristol, UK, before adventuring across the pond for a repeat performance at Buchla & Friends 2026, January 24-25, LA, CA, USA, Reykjavik-based instrument developer Genki Instruments is proud to announce availability of the eagerly-awaited Katla as a Voice Rotating Polyphonic Synthesizer inspired by Iceland’s largest subglacial volcano as its natural namesake — readily representing the company’s first foray into analogue synthesis, albeit one that uniquely utilises a set of wildcard parameters to infuse it with organic, unpredictable behaviour as an instrument that is worthy of that legacy, excelling at generating rich, evolving, multi-layered textures, where each note stirs, swells, and erupts in its own distinct way — as of March 31…
Clearly Katla’s inspiration runs through its ‘volcanic’ veins. After all, it is framed by side panels and knobs forged from authentic Icelandic lava, giving each instrument a tangible connection to the volcanic forces that inspired it. That this synth should surely roar is a given. Genki Instruments inevitably chose, therefore, to kit Katla out with four independent distortion destinations, the most unruly of which is a stereo CMOS (Complementary Metal Oxide Semiconductor) Drive effect — a characterful saturation stage, pushing tones from warm and rounded to fractured and snarling.
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.
