Indtroducing AcidBoxMynah

video upload by MoShang

"AcidBoxMynah is an alternative firmware that turns the Mynah into an acid groovebox. Based on the open source AcidBox project for ESP32. It provides an acid combo of tb303 + tb303 + tr808 like synths. Filter cutoff, reso, env mod, accent, wavefolder, overdrive within each 303, per-instrument tunings, hi-pass/lo-pass filter and bitcrusher in drums, send to reverb, delay and master compression

While the original project is headless, the AcidBoxMynah fork provides direct control with the Mynah hardware and adds a number of additional features detailed in the user Manual below. Like the original firmware, the AcidBoxMynah is open source and made available under the MIT license.

More info at https://groovesizer.com/"

Update: press release follows:

"Hot on the heels of Mynah's launch this past May, Groovesizer has released AcidBoxMynah - a free, open-source alternative firmware that transforms the ESP32-S3-based sampler into a dedicated acid groovebox.

Built on copych's open-source AcidBox project, AcidBoxMynah takes what was originally a headless engine and gives it a full physical UI on Mynah hardware - 24 tactile switches, an 8×2 NeoPixel grid, OLED display, and a single pot for hands-on parameter control. Under the hood, it's a combo of two TB-303-style synths plus a TR-808-style drum machine, with filter cutoff, resonance, envelope mod, accent, wavefolder and overdrive per synth voice, plus hi-pass/lo-pass filtering and bitcrushing on the drums, all routed through send effects and master compression.

The Mynah fork adds a 16-step sequencer with per-step note, accent and slide editing, 16-lane synth and 8-lane drum automation, scale quantization, swing, and manual Sequencer Mode in addition to the original's autonomous Jukebox Mode. Quality-of-life additions include runtime drum kit browsing, per-voice muting, and pot-lock to prevent accidental parameter jumps.

Like the original AcidBox, it's fully open source under MIT license.

Switching is effortless. Owners can flash AcidBoxMynah straight from the Mynah web app's firmware tab and swap back to standard Mynah firmware anytime - AcidBoxMynah keeps its own folder on the SD card, so nothing overwrites or conflicts with existing samples and patterns.

AcidBoxMynah is available now at groovesizer.com/acidbox-mynah."

Kepra - Circuit-Modeled Rhythm (demo)

video upload by Hügelton Instruments

"Kepra is a rhythm instrument developed through detailed analysis of an original Japanese vintage programmable rhythm machine.

Rather than relying on sampled sounds, Kepra recreates each instrument by studying the original analog circuits, measuring waveforms, analyzing spectral content, and reproducing their behavior in software.

Features

• Circuit-inspired drum synthesis
• 12 drum voices
• 16-step sequencer
• NOTE / FLAM / ACC layers
• 8 pattern banks
• Stereo mixer
• Drive and character section
• Internal, host, and external MIDI clock

Available for macOS (AUv2 / VST3) and Windows (VST3).

https://hugelton.itch.io/kepra"


"Hardware Archaeology

Developing Kepra felt less like sampling a drum machine and more like studying an archaeological artifact.

Every instrument was investigated through circuit analysis, waveform measurements, timing analysis, and spectral comparison to better understand how the original hardware produced its sound.

Rather than reproducing recordings, Kepra attempts to reconstruct the behavior behind them.

The Missing Instrument

One voice in Kepra did not exist on the original hardware.

The Shaker was designed as an 'imaginary expansion'—a voice inspired by the architecture and character of the original instrument.

Instead of adding a modern sample-based shaker, it was developed by asking a simple question:

'If the original designers had decided to include a shaker, how might they have built it using the same technology?'

The result is not a historical reproduction, but a speculative reconstruction that aims to remain faithful to the design philosophy of the original machine.

Not an Emulator

Kepra is not intended to be a museum piece.

It is a modern rhythm instrument built from careful hardware analysis, extending the ideas of a classic Japanese drum machine into new creative territory."

This 4HP Eurorack Module Just Got INSANE

video upload by wgd modular

⏱️ Chapters
00:00 – Intro
00:14 – What happened since the last video? [embed below]
00:54 – New panels
01:17 – Fixing the noise problem
01:50 – Melon in live performances
02:03 – Firmware flashing infrastructure
02:32 – Updates to existing firmwares
03:08 – New firmwares
03:18 – Metal Hit
04:14 – RALPS
04:50 – Reese Bass
05:29 – Drums
06:26 – fxloperformer
07:29 – Final thoughts


"In this video, I’m taking a look at what has happened to melon since my last video. My 4HP Eurorack adaption of Hagiwo’s amazing RP2350-based MOD2 has grown quite a bit since then, with new panels, new firmware, community contributions, and improvements to the overall infrastructure.

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How to Get That 80s Analog Bell Sound (Korg Multi/Poly Tutorial)

video upload by Ian Dixon

Follow-up to Turn the Korg Multi/Poly Into a Vintage String Machine

"In this tutorial, I'll show you how to recreate those classic 80s synth-pop analog bells on the Korg Multi/Poly. Taking inspiration from the legendary Roland JX-10 (which is essentially two JX-8P synths in one box), we’ll dive into how to layer oscillators and use component modeling to achieve that iconic hollow, phasing tone.

Whether you're using the Multi/Poly or any other analog synth, these sound design principles will help you nail that vintage vibe. We’ll start from an initialized program and walk through everything from pulse width modulation and detuning to filter shaping and adding that essential chorus and delay.

Key Topics Covered:

Setting up square/pulse waveforms for a hollow bell tone.
Detuning techniques to mimic analog voice cards.
Shaping the sound with 24dB low-pass filters and envelopes.
Adding stereo depth using chorus, cross-delay, and stereo filters.
Experimenting with octaves and subtle noise for extra texture."

Timestamps
0:00 - Introduction to Synth Pop Bells
0:49 - Starting from an Initialized Program
1:18 - Oscillator Setup: Pulse Width & Waveforms
1:35 - Detuning for Analog Character
2:25 - Shaping the Bell with Filter Envelopes
3:30 - Adding Effects: Chorus, Delay & Reverb
4:21 - Testing Ring & Cross Modulation
5:04 - Adding Subtle Noise Texture
5:24 - Layering Octaves for Depth
7:18 - Stereo Filter & Panning Tips
7:56 - Adding Pitch Drift & Final Touches
8:40 - Outro & Suggest Your Ideas!

Torso S-4 POLY Engine: Turning Samples Into Synths (Torso Explorations Vol. 34)

video upload by Andre Bregegere

"In Volume 34 of my Torso Explorations series, we are diving deep into the POLY engine on the Torso Electronics S-4 sculpting sampler. While the S-4 is an incredible texture and ambient machine, the POLY engine transforms it into an expressive, 8-voice polyphonic synthesizer by arranging samples chromatically across the keys.

I walk you through how to configure and play the POLY engine using two external MIDI controllers: the Keith McMillen QuNexus keyboard for manual playing, and the Korg SQ-1 for sequencing.

The POLY engine gives you per-voice control over amplitude and filter envelopes, allowing you to sculpt raw samples into beautifully playable synth patches.

--

🎵 What's inside this video:

• Track 1: Demonstrating the core mechanics and envelope shaping of the POLY engine using a built-in stock sample.

• Track 2: A quick, live workflow showing how to sample an external acoustic instrument (my mandolin) using the S-4’s internal microphone and instantly flip it into a polyphonic synth patch.

This entire performance was recorded live in one take, with light mixing and mastering finished in Pro Tools. The video is fully annotated throughout so you can easily follow the exact parameters and routing I'm altering in real-time.

If you enjoy these deep dives into the S-4, please consider liking the video, subscribing to the channel, and leaving a comment with how you’re using your S-4!

--

00:00 - Intro
00:37 - Setting up a first POLY track
04:24 - Sending Audio from one track to another
06:12 - Quickly recording, trimming, and saving a new sample
07:05 - Using the new sample to create a second POLY track
08:34 - Let's add some drums?
09:03 - And let's play!"

Rhodes Chroma 64-Key 16-Voice Polyphonic Hybrid Analog Synthesizer w/ Extra

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

via this Reverb listing

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MARS Vacuum-Tube Synthesizer: The Most Aggressive Modern Synth I've Ever Tested

video upload by Vulture Culture

0:00 Intro Jam
2:17 Mono Mode & Basic Oscillator Shapes
4:16 The Vacuum Tube Filter
7:49 Duo Mode / Polivoks-Style Duophony
8:47 Poly 1 Mode / Korg Mono/Poly Behavior
10:47 Ensemble Mode & Supersaw Sounds
14:14 LFO Shapes, Retrigger & One-Shot Mode
17:31 Sample & Hold Filter Modulation
20:16 FM Synthesis Overview
29:00 Pros & Cons
37:43 Closing Thoughts

"What happens when you build a vacuum tube-based hybrid synthesizer in a Soviet space lab and send it back from the future? Today we’re demoing, reviewing, and explaining MARS from Eternal Engine Electronic Musical Instruments — one of the strangest, most beautiful, and most aggressive modern synthesizers I’ve ever played.

MARS is often described as a four-voice polyphonic tube synthesizer, but architecturally it’s more accurately a paraphonic synthesizer. The four digital oscillator voices can be played across multiple notes, but they all share the same tube-based filter and vactrol-based amplifier. That puts MARS more in the tradition of instruments like the Korg Mono/Poly and Formanta Polivoks than a conventional analog polysynth.

In this video, I walk through the full architecture of the Eternal Engine MARS: the digital oscillator section, mono / duo / poly voice modes, pulse-width modulation, ensemble mode, FM synthesis, modulation matrix, envelopes, LFO, sample & hold, the gorgeous Nixie lamp interface, the resonant vacuum tube filter, and the asymmetric tube overdrive that gives this synth its raw, snarling character.

This is not a safe, polite, modern analog synth. MARS is boutique, unusual, heavy, beautifully built, and absolutely vicious when pushed. The tube filter and drive section give it a sound that feels alive in a way most modern synthesizers don’t — somewhere between vintage analog synth, industrial bass machine, experimental sound design box, and Soviet sci-fi artifact.

If you’re into industrial music, EBM, darkwave, synthwave, experimental electronic music, vintage synthesizers, boutique synths, tube distortion, paraphonic synthesis, analog filters, FM basses, PWM pads, or Polivoks-style aggression, MARS is worth hearing.

I also talk through who I think this synth is actually for — and who should probably pass on it. Because while I absolutely adore the sound, MARS is not a cheap “do everything” synth, and it’s not trying to compete with mass-market analog polysynths. It’s a character instrument. A monster. A special machine for people who want something truly different."

beetlecrab.audio TEMPERA v2.3 Firmware update

video uploads by beetlecrab

Playlist: 1. Quad Macro 2. Envelope Follower 3. Grain Sparkles 4. Grain Shape

Press release follows:


Prague, Czech Republic, June 23, 2026: Beetlecrab Audio announces Tempera Firmware v2.3, a firmware update introducing cross-modulation, audio envelope follower, quad-macro control, per-emitter pitch sequencing, and numerous community-driven workflow enhancements.

Tempera is a hardware granular synthesizer built around a simple idea: eight samples laid out on a surface, with grains roaming across. At its core is a granular engine with a global pool of 4096 grains, shared across voices, and any single voice can claim the entire pool if needed. Tempera is just as happy chopping breaks and sequencing tight rhythmic patterns as it is building massive drifting clouds. Since launch it has found its way to musicians in over 60 countries, growing steadily through firmware updates shaped and steered by a community that has lived with the instrument long enough to know it inside out.

New v2.3 features:

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DS8 Drumstream — PlayStation Vita Drum Machine Walkthrough

video upload by Intermynd Instruments

"In this livestream I walk through DS8 Drumstream, a drum machine and groovebox for the PlayStation Vita.

I cover the main features in the current build, including the 8 drum tracks, step sequencing, voice editing, per-step automation, pattern tools, insert effects, send effects, master effects, and some of the performance controls built around the Vita’s physical buttons.

DS8 is still in active development, so this is an early look at the workflow, sound, and overall direction of the project.

Download DS8 Drumstream on itch.io:
https://intermynd-instruments.itch.io...

Feedback, bug reports, and feature requests:
https://itch.io/t/6450352/feedback-bu...

More from Intermynd Instruments:
https://intermynd-instruments.com/"

LARKING — Quantized Ambient Drone Instrument

video upload by recoverysounds

www.recoveryeffects.com

"Larking is a 4 voice ambient drone synthesizer that redefines what a playable synth can be. Pitch is quantized, with each voice locking to a selectable key and one of eight musical modes for consistent harmonic control.

A standalone instrument for immediate tactile performance and tonal exploration, Larking functions as a sound design tool, performance instrument, or central voice in effects based setups. It integrates easily into pedalboard systems and complex signal chains.

Without traditional keys, it shifts focus from fixed patterns to guided harmonic discovery. Voices can be triggered via onboard controls, gate inputs, or MIDI, supporting hands on playing, modular systems, and sequencing.

Each voice features independent pitch control that snaps to scale degrees, enabling open ended melodic movement within a stable musical framework.

At its core is a morphing tonal engine. The Shape control moves each voice from a warm sine like foundation into harmonic saturation with analog style overtones, grit, and complexity, delivering a deep resonant low end with strong weight and bass response. Attack and Decay shape voice response from percussive rhythmic strikes to slow evolving swells that dissolve into space.

A global LFO modulates pitch across all voices, from subtle drift to extreme instability. Onboard reverb expands everything into a deep spatial field and atmospheric wash. The result is an instrument between a melodic synth, drone machine, and experimental performance tool, grounded in musical structure and open to pitch based exploration."

Turning the Perkons HD-01 Into a Drone Synth

video upload by Mark Cee

"Drone sounds never really appealed to me until I started studying textures. Over time I became drawn to the idea — and to the tools used to compose this way. What I didn't realize is that I've had a very capable drone synth right under my nose for the last 3 years.
The Perkons HD-01 is usually known as a drum machine, but each voice is so much more which makes it great for sustained, evolving textures. I tuned each voice and sent it all through my Meris Mercury X for reverb. I couldn't help adding a few notes from the OP-1 Field on top. After that I just jammed and was reminded how the simplicity of an instrument like this never grows old. It's been my buddy since the day it was released and still brings me a lot of joy to this day."

JP-8000 vs Nord Lead A1 vs Access Virus B — Which One Do You ACTUALLY Need?

video upload by Marc Renton

"The elephant in the room: Roland JP-8000, Clavia Nord Lead A1, and Access Virus B: Three legendary hardware synths from the late 90s/2000s that still hold up today. But which one is worth your money in 2026?

In this video, I go hands-on with all three machines from my studio, playing patches, presets, and sounds I programmed myself. No script, no BS — just honest thoughts after owning these synths for up to 21 years.

What you'll learn:
JP-8000: SuperSaw magic, but what are the real limitations of the filter?
Nord Lead A1: Why it's my go-to synth — and why the Moog filter is a game changer
Access Virus B: The all-in-one machine with 24-voice polyphony... and where it hits a wall
Should you buy hardware or use emulations? (honest take)

These are timeless machines. This knowledge will be valid in 10 or 20 years. Maybe some plugins won't exist by then — but these synths will.

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lil' dream organ wenge/walnut/oak small batch

video upload by ellitone instruments

Video re-uploaded as ellitone - lil’ dream organ - walnut and wenge *limited edition*

"*small batch - only 8 available - made from wenge/walnut/oak wood

ellitone.com

The ellitone lil' dream organ is a limited edition battery-powered polyphonic digital synthesizer with built-in amplified speaker.

Featuring 8 wooden Touch Bars, 16 oscillators, 8 selectable musical scales, and a collection of 50 waveforms to explore and blend using the ‘infinite tone’ knob. the lil dream organ is a fun and powerful electronic instrument capable of many tones and textures, simple enough for a youngster or beginner to operate.

Controls:

-‘infinite tone’ knob blends and mixes 2 separate layers of waveforms together. Each layer consists of 8 oscillators and each layer has its own unique selected waveform. As you turn the knob fully clockwise or fully counterclockwise, a new waveform is chosen from a collection of 50 waveforms and applied to one of the 2 layers. This means that you are infinitely blending in-between new combinations of waveforms continuously.

-musical scale select switches. 3 toggle switches at the top of the device are used to select one of the 8 musical note scales. These three switches operate using binary logic. With 3 switches, we have 8 unique combinations of switch positions (on/off/on…off/off/on…etc). Each one of these 8 possibilities selects a different musical scale to explore using the wooden Touch Bar keyboard notes.

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Parasite Drone 1

video upload by flightofharmony

https://flightofharmony.com

"I'm sick today, so no voice track. Brain was dead so I figured I'd noodle around a bit, and ended up realizing that - after spending three years focusing on developing, building, and delivering the Facehugger with no time to play anything - I had completely forgotten how much I love the Parasite Antifilter. It's my favorite module, no contest, and combining it with the Facehugger is unbeatable, in my mind. The slightest setting change can take you in entirely new directions.

This one uses basically the same external inputs as the last video but, instead of hitting the Input with the Facehugger, the input is a buzzy drone from an Infernal Noise Machine and the main Facehugger is driving the Low Frequency CV input. The rest is swapping where a sine LFO goes (the second olive cable), the other Facehugger (purple cable) and the step 7 gate from the main Facehugger. This all adds up to some great drones with transient melodies and rhythms.

It gets a little blah in the middle, but it picks back up again when a new drone is discovered later. I'm particularly pleased to have caught one of the Parasite Antifilter's coolest (and most frustrating) features: the charge-up effect. It begins around 11:18. These are where some new sound just builds up out of nowhere. This one was unusually persistent though. Often, they disappear if you change a setting and are very difficult to find again. It's not a filter you can just dial through quickly, you have to give each change a moment to see if it wants to build something else.

It's fun that I could say that this video is just me running a buzzy sound into a filter and sweeping the filter parameters with a stepped CV sequence and some LFOs."

TBD 16 teaser #superbooth26 #dadamachines #tbd16 #dsp #esp32 #groovebox #electronicmusic #synth

video upload by dadamachines

"Get ready for Superbooth 26! 🚀

Here's a sneak peek at the TBD 16 from https://dadamachines.com/ , a powerful new DSP-based groovebox and synthesizer powered by ESP32.

Come see us at Booth Z385 to see the TBD 16 in action. You won't want to miss this!"

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Whimsical Raps - Atrium - First Experiment - Completely Wild!

video upload by Richard Devine

"five voices of analog synthesis, controlled and modulated polytimbrally. We’ve taken ideas from our decade of modular exploration and rethought how we reach into polyphony.

Each voice is shaped by its harmonic energy while three core timbre modes push into richer territory. from simple suboctave and noise waves, through frequency modulation, to formant synthesis reimagined. all squeezed through a lowpass/gate combination, providing balance and occasionally emphasis.

no digital multi-effects here, just spectres in the machine. a novel configuration of three filters, two delays, and feedback. front and almost center — this resonant body is meant to be played. sequenceable, modulatable, while feeding back not just sound, but shape for unfolding cybernetics.

and to modulate! everything mappable to everything else, tactile input extended on the fly, mapping as a performance in itself. Sources are dynamically phased across voices and stretched in relative duration. gestures captured into five recorders, extending play rather than overriding it, all twisted in time at your whim.

Atrium is deeply learnable, and for those moments of quick change, instantly recallable. extensible with usb and midi and cv input."

https://atrium.whimsicalraps.com/

Twenties - Hybrid Setup Jam (Analog + Move)

video upload by 2-Minute Warning

"This one’s built around two main pieces of gear: the Vermona Perfourmer handling nearly all melodic duties (bass, plucks, lead), and the Ableton Move taking care of drums plus a few piano/strings layers.

You already know the Perfourmer is one of my all-time favorites, but the Move keeps surprising me: super versatile for a 4-track box, and I feel like it doesn’t get as much love as it deserves ❤️

Everything is sequenced from the Hapax, I skipped the Move’s internal sequencer this time as it's easier to control all the sequences only on one machine. The breaks come from the Hapax 'FILL' feature as usual.

I treated the Perfourmer like three separate instruments:
Voices 1 & 2 → plucks (through H90)
Voice 3 → bass (Apocalypse + Julianna)
Voice 4 → lead (Lofi Junky + BigSky + Pill for ducking)"

This Drum Machine Isn't Normal!

video upload by Oscillator Sink

"At Superbooth two years ago, as I was walking the halls I felt a hand on my shoulder and a voice said “oscillator sink, let me show you my groovebox”.

Now whatever gets conjured in your mind when you hear the phrase “groovebox” is probably not the Drop from Mad Sound Factory, but after a few minutes of patching and turning knobs I had it generating extremely aggressive gabber, and naturally I was hooked and named it one of my synths of the show.

In this video we’ll get to know Drop, how it works, how it sounds, how it plays with others - including a discussion of how to get banana jacks and euroracks to talk. As the video is long (because of course it is if it’s on my channel), I’ve added chapter markers throughout, and scattered some small no-talking demos throughout, both with drop as a solo instrument, and in ensemble with other instruments.

Transparency notice: Mad Sound Factory kindly sent the Drop to me for free for the purposes of making videos about it. I get to keep the unit, but no other payment was made for making the video and MSF have been given no editorial oversight for this video.

Chapters:
00:00:00 Introduction
00:01:14 The Tone Section
00:05:50 Interlude 1
00:06:42 The Noise Section
00:14:47 Interlude 2

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ellitone - lil' dream organ - (small batch)

video upload by ellitone instruments

"*small batch - only 7 available -

ellitone.com

The ellitone lil' dream organ is a limited edition battery-powered polyphonic digital synthesizer with built-in amplified speaker.

Featuring 8 wooden Touch Bars, 16 oscillators, 8 selectable musical scales, and a collection of 50 waveforms to explore and blend using the ‘infinite tone’ knob. the lil dream organ is a fun and powerful electronic instrument capable of many tones and textures, simple enough for a youngster or beginner to operate.

Controls:

-‘infinite tone’ knob blends and mixes 2 separate layers of waveforms together. Each layer consists of 8 oscillators and each layer has its own unique selected waveform. As you turn the knob fully clockwise or fully counterclockwise, a new waveform is chosen from a collection of 50 waveforms and applied to one of the 2 layers. This means that you are infinitely blending in-between new combinations of waveforms continuously.

-musical scale select switches. 3 toggle switches at the top of the device are used to select one of the 8 musical note scales. These three switches operate using binary logic. With 3 switches, we have 8 unique combinations of switch positions (on/off/on…off/off/on…etc). Each one of these 8 possibilities selects a different musical scale to explore using the wooden Touch Bar keyboard notes.

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Introducing Plinky 12 Blocks, Chords and Toadstep

video upload by Making Sound Machines

Additional videos below.

"We are super excited to introduce 3 new instruments today! Plinky 12 is a family of expressive polyphonic touch synthesizers. The three instruments are built around a shared synth engine. Designed by mmalex, it evokes the unmistakable melancholic sounds of the original Plinky. https://plinky12.com

Each instrument is designed in collaboration with a different synth maker, lending each panel a distinct playability and unique character.

Plinky 12 Chords is a harmonic inspiration machine. It lets you improvise melodies and chords, with expressive control over voicings, progressions, and immediate musical play. Created by Making Sound Machines, Chords is the panel for finding beautiful harmonic movement quickly.

Plinky 12 Toadstep is a 4-track step sequencer built for super funky riffs, experimental self-generative melodies, and good ol' Acid. Created by Toadstool Tech, the designer behind the Ectocore Eurorack module, Toadstep is fun, immediate and easy to jam with!

Plinky 12 Blocks is an open panel built for experimentation, with monome-grid compatibility, Plinky style touch synthesis, and a browser-based coding environment just a click away. While it comes with a fully playable design out of the gate, creator mmalex invites you to build your own adventure with this panel. If you can imagine it, you can make it!

In this video, Enrica and Roland from Making Sound Machines explore the three new Plinky 12 instruments: Blocks, Chords and Toadstep from left to right.

The track builds on a repeating loop created with the built-in sequencer on Plinky 12 Toadstep. The short sequence uses rhythmic step repeats, track step length and animated synth parameters to create an ostinato that keeps sonically evolving over the length of the track.

As the piece continues, Roland plays a progression of harmonies from the rainbow chord palette on Plinky 12 Chords, before launching a sequence that reharmonizes the loop heard from Toadstep. Enrica joins in playing sparkling arpeggios with her fingertips on Plinky 12 Blocks, the surface with the sunset colour-fade print.

As the track progresses, Roland plays a melodic line on Chords, then Enrica takes over with a melody on blocks. The Plinky 12 polyphonic play surface reads both play position and pressure of the touch. It enables bends and glides on the horizontal axis, while allowing for discrete arps in the vertical direction.

They end the piece with a tempo transition showcasing the septuplet feature on the internal sequencer."

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