They Open-Sourced Kastle 2. Then You Did This. [v1.7 firmware update]

video upload by Bastl Instruments

"Kastle 2/Citadel FW Update v1.7 is LIVE!

The official v1.7 firmware update adds:

• Humanize and Swing
• Assignable LFO MOD destinations
• MIDI velocity and sustain for Alchemist
• CC32 control for Humanize and Swing
• Small fixes

► DOWNLOAD THE OFFICIAL UPDATE:
https://bastl-instruments.com/support...

► COMPLETE FEATURE LIST + UPDATE INSTRUCTIONS:
https://bastl-instruments.com/content...

► SOURCE CODE + COMPLETE FIRMWARE LIST:
https://github.com/bastl-instruments/..."

Blind Sample Challenge: 4 Random Samples on the Torso S-4 (Vol. 41)

video upload by Andre Bregegere

"Welcome to Vol. 41 of my Torso S-4 explorations! In this video, I take on a blind 4-sample challenge: building a complete 4-track ambient soundscape from scratch using four randomly picked samples from the Bastl MicroGranny library. Because the files use non-descriptive, sequential labels, I had no idea what sounds I was getting until they hit the tracks.

With zero planning and no preparation, every decision is made on the spot. I work through each track sequentially, sculpting textures, grains, and filters to weave unrelated sounds into a cohesive sonic environment. Toward the end, I break down how to set up and perform with Macro modulations to bring dynamic motion across the entire patch.

The video is heavily annotated with on-screen notes detailing each step of the sound design workflow, modulation routing, and granular processing.

• Instrument: Torso S-4 Granular Synthesizer
• Source Material: Bastl Instruments MicroGranny Factory Samples
• Post-Processing: Lightly mixed and mastered in Pro Tools"

Mettalicum - XOR Logic Percussion Synth

video upload by Sid Rockett

"🔊 Exploring the Mettalicum: a new XOR-based percussion synthesizer built for harsh metallic hits, industrial rhythms, and unpredictable noise. Unlike traditional drum machines, the Mettalicum relies on logic gates to generate complex, inharmonic square-wave clusters that cut right through a mix. In this hardware demo, we run through the raw oscillators, tweak the parameters, and patch it into an experimental setup to hear what it can really do.

⚙️ Sponsored by PCBWay
Huge thanks to PCBWay for sponsoring this video! Whether you are prototyping a chaotic new noise box, building a custom MIDI controller, or ordering high-quality circuit boards for a full production run, PCBWay has you covered. They offer incredibly fast turnaround times on custom PCBs, 3D printing, and CNC machining. Bring your DIY audio projects to life: https://pcbway.com/g/1AhZrq

Ⓜ️ What makes the Mettalicum different?
Traditional subtractive synthesis uses standard waveforms and filters to create drum sounds. The Mettalicum takes a different approach by running multiple square waves through XOR (Exclusive OR) logic chips. When these frequencies interact, they create dense, metallic, and grinding textures perfect for noise music, industrial beats, and lo-fi soundscapes.

⏱️ Chapters:
00:00 - Intro
00:20 - The Raw Sound of the Mettalicum
00:32 - PCBWay Sponsor Message
00:44 - Demo with Ampero Mini
02:42 - Hardware Jam: Mettalicum + Experimental Setup

🔗 Gear Used in this Video:
Mettalicum XOR Synthesizer
Tempest Kick Synthesizer
Korg Monotron Delay
Bastl Instruments Bestie
Hotone Ampero Mini
MyVolts CandyCords

✌️ I’m Sid Rockett, a designer and explorer of experimental synthesizers and custom noise-machines.

From boutique pocket synths to DIY Eurorack builds, this channel is dedicated to pushing the boundaries of compact hardware. Join me as we navigate through industrial soundscapes, deep cinematic reverbs, and the infinite feedback of outer-space delays.

🎛️ Shop here:
https://sidrockett.bandcamp.com
https://www.tindie.com/stores/sid_roc..."

Klik - Pushbutton Matrix for the Bastl Kastle Synthesizers

video upload by Sid Rockett

"💡Discover the Klik module. Add a playable 4x4 button matrix to your Kastle or Volca synth for ultimate hands-on control and experimental patching.

⏱️ Chapters:
0:08 – Intro
0:20 – Controls
0:40– Sound demo with Kastle 2 Wave Bard

🗒️ How does it work?

There are 8 patch points connected to 4 rows (ABCD) and 4 columns (1234) of buttons. Pressing button A1 connects point A to point 1. A2 connects A to 2. B2 connects B to 2 and so on.
It is best used by dedicating rows to outputs and columns to inputs. In this configuration every possible combination of buttons will connect outputs to inputs and cause a change in the behaviour of the synthesizer.

Based on the Synapsis by Bastl Instruments ! (...hope the guys are ok with it).

✌️ I’m Sid Rockett, a designer and explorer of experimental synthesizers and custom noise-machines.

From boutique pocket synths to DIY Eurorack builds, this channel is dedicated to pushing the boundaries of compact hardware. Join me as we navigate through industrial soundscapes, deep cinematic reverbs, and the infinite feedback of outer-space delays.
🎛️ You can buy my synths here:
https://sidrockett.bandcamp.com
https://www.tindie.com/stores/sid_roc..."

BASTL INSTRUMENTS KASTLE ARP DESKTOP MELODY SYNTH

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

via this listing

Additional Signal Sounds listings

"We say...
A pre-owned Bastl Instruments Kastle ARP in excellent condition. It comes with original packaging and accessories.

Manufacturer's description
Kastle ARP is a unique modular melody generator based on a quantized sine wave oscillator with a digital waveshaper.

The pitch selection employs straightforward concepts to unleash surprising intricacy. The quantized oscillator ensures it is always in tune, and its pitch can be selected using the NOTE and CHORD inputs. The decay envelope adds variation by occasionally skipping pitches before retriggering. The timbre control allows you to blend between noble sine waves and 8-bit chip-tunes.

CLICK FOR MORE »

Exploring the Hexinverter / Erica Synths Mindphaser | Drone Sound Study

video upload by synthetic theory

"Yesterday was Drone Day and technically I'm one day late, because I didn't finish the post-processing in time. But anyway: this felt like the right moment to share something a little different.



I'm currently expanding my rack and learning how to operate a few new modules properly. One of them is the Hexinverter / Erica Synths Mindphaser. At first, I honestly wasn't completely convinced. I tried it, struggled to find the right tones, packed it back into the box and was already planning to send it back.



But then I gave it one more evening.



Instead of judging it too quickly, I tried to understand how it actually works. I slowed down, explored the interaction between the oscillators, the modulation paths, the waveshaping, and the strange areas between tone and chaos. And then the potential suddenly became clear.



Some modules simply need more attention. They have a learning curve and they don't always reveal themselves immediately. But once you reach that point of understanding, they can turn out to be real powerhouses.



So this is not one of my usual performance videos. It's more of a slow exploration: a drone-focused sound study with the Mindphaser at the center, sometimes shaped by effects, filtering, gates, and modulation.

CLICK FOR MORE »

Ribbon Freaks

video upload by Ebotronix

Arturia ,Minifreak, Microfreak, (2x),
Doepfer R2m,( 3x),
Mutable Instruments Midipal,(3x),
Line6 DL4 Mk 2,
Hologram Electronics Microcosm,
Strymon Big Sky MX, in Dual Mono Mode controlled with
Midi CC by, 16n Faderbank, AtoVproject ,
Bastl Bestie,
Bhairav Scale,
29.05.2026
video# 2638

The Story of Bastl Kalimba

video upload by Bastl Instruments

"Bastl Kalimba is our most ambitious project to date. It took us more than 3 years with countless redesigns, deep development and great people to make it a reality.
Bastl Crew 4ever ❤️
Big thanks to Oliver Torr, HRTL and Never Sol for being part of the story!

Get Bastl Kalimba Through Kickstarter now at early bird prices.
https://www.kickstarter.com/projects/..."

...and the result couldn't be better ❤️ #synth #sounddesign #electronicmusic #kalimba
video upload by Bastl Instruments

See the announcement post here, and additional posts here.

Bastl Kalimba! A fun new instrument at #Superbooth 2026

video upload by CatSynth TV

"A brief demo of the new Bastl Instruments Kalimba. This prototype is very playable as both a traditional kalmbia and a synthesizer with scales, microtuning, and an arpeggiator.

Our pal Zip gets into the action a bit."

Patreon: / catsynth | https://shop.catsynth.com | https://ko-fi.com/catsynth

Bastl Introduces Kalimba - Physical Modelling & FM Kalimba Synth

video uploads by Bastl

Playlist:
1. Bastl Kalimba: An Expressive Instrument for Intuitive Electronic Music Exploration
2. Bastl Kalimba - Demo Overview
3. Bastl Kalimba is such a fever dream - HAINBACH
4. WTF did they make? Bastl Kalimba! - ANDREW HUANG


Press release follows:

Bastl Instruments are very proud to announce the release of their new instrument - Bastl Kalimba, a unique desktop instrument that combines microphones, touch sensors, and an accelerometer, with a user interface inspired by the traditional kalimba and its main interaction element: the tines.

We believe that this combination of features and physical interface leads to intuitive creativity and easy musical expression.

Just play it, you already know it.

CLICK FOR MORE »

Granulation

video upload by Ebotronix

Waldorf Iridium, Protein,
Endorphines Evil Pet,
Roland Aira S1,
Haken Audio ContinuuMini,
Torso S4,
Eventide H 90,
Hologram Electronics Microcosm Special Edition 2024,
Strymon Big Sky MX,
controlled with Midi CC by, 16n Faderbank, AtoVproject ,
Bastl Bestie,
Keith McMillen K-Board MIDI-Controller Galaxy, Midi Expander,
Intuitive Instruments Exquis,
Korg Nano Control,
Eb Minor Scale,
29.04.2026
video# 2633

Bhairav Sphere

video upload by Ebotronix

Moog DFAM,
Ferrofish B 4000+,
Waldorf Protein,
Doepfer R2m,
Mutable Instruments Midipal,Veils, Yarns, Peaks,
Ornament & Crime,Shades,
Hologram Electronics Microcosm Special Edition 2024,
Strymon Big Sky MX, in Dual Mono Mode controlled with
Midi CC by, 16n Faderbank, AtoVproject ,
Line6 DL 4 MK2,
Bode Frequency Shifter,
Lab4 Enjoy,
Bastl Bestie,
Bhairav Scale,
22.04.2026
video# 2631

Déjà vu: Flexible Fader Control for Audio & CV│Bastl Instruments

video upload by Bastl Instruments

"Bastl Déjà vu is a Swiss knife for your Eurorack System that adds fader control to your modular system for many scenarios. It stands out as a simple yet powerful utility module that can do crossfading, mixing, signal boosting, voltage processing, attenuation or attenuversion. All that in 4HP and with the possibility to chain several of them to mix even more signals."



Powerful Voltage Utility module for voltage processing, attenuation, signal boosting, crossfading, and mixing

Déjà vu adds fader control to your modular system and it stands out as a simple yet powerful utility module that can do voltage processing, mixing, attenuation, attenuversion, signal boosting, crossfading and mixing.

All that in 4HP and with the possibility of chaining several units to mix even more signals.

SWISS KNIFE FOR YOUR RACK

Déjà vu has two almost identical channels A and B. Each channel has the FADER input and the ADD input and an output with light indication. The FADER MODE switch alters the behavior of the module, either attentuating or attenuverting the FADER input where the ADD input will be added to the processed FADER input. The last option is crossfading between the FADER Input and the ADD input which is great for creating performance oriented macro controls.

CLICK FOR MORE »

BASTL Instruments Thyme+ w/ Original Box

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

via this Reverb listing

Additional NOISEBUG Listings

CLICK FOR MORE »

BASTL INSTRUMENTS MICROGRANNY MONOLITH DESKTOP GRANULAR SAMPLER

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

via this listing

Additional Signal Sounds listings

"A pre-owned Bastl Instruments Microgranny Monolith in very good condition. It comes with original packaging and accessories.

Manufacturer's description
Granny’s back with a brand new lid: our classic desktop granular sampler gets a facelift, bringing her into the modern age with enough usability upgrades to last another lifetime, rehomed in sleek black PCB-material to help it look the part amongst the latest in the Bastl range.

The Microgranny 2.0 that you know and love is still there under the facelift: lo-fi sound full of character packed into a hands-on monophonic desktop sampler that is a joy to experiment with. Plug in your microSD card loaded with 8-bit samples, or record them live through the in-built mic or line input, and jump into play with 6 samples right under your fingers, or instantly recall up to 60 saved presets.

Playability is paramount
The two-tier menu lets you dart between editing grain size or warping the playback speed, and the new-look tactile knobs grant better control than the previous model. The hazy plastic case is gone, and the PCB case’s sharper text makes the modes under the new and improved buttons more enticing – delve into Randomized mode, Legato playback, or the Instant Loop function to extend the virtually limitless possibilities of the surface controls yet further.

MIDI Control? Yep: play specific grains with keys, control the CC values remotely, even clock-sync loops and grains. Take your Granny for a walk in the park with the battery power, or run it through a wired 9V supply."

moog collection 17

video upload by Ebotronix

Moog Taurus 2, Slim Phatty, 2x ,Spectravox,MF Delay, MP 201,
3x, MF 107 Freakbox, 2x ,MF 101 Filter, MF 102 Ringmodulator,
2x, MF 103 Phaser, Midi Murf, 2x, CP 251,
2x, Doepfer R2m, Ribbon Controller,
Mutable Instruments Midipal,Yarns, Peaks, Ornament and Crime,
Hologram Electronics Microcosm Special Edition 2024,
Strymon Big Sky MX, in Dual Mono Mode controlled with
Midi CC by, 16n Faderbank, AtoVproject ,
Bastl Bestie,
Minor Scale,
24.02.2026
video# 2612

Folktek Mescaline + Passive Operator: Melodic Malfunction

video upload by Infin-D

"The Folktek Mescaline delivers a nice rhythm and melodic drone, and the Error Instruments Passive Operator just gltiches it all up. The Passive Operator is running through the Meng Qi Wingie 2 Stereo Resonator. Vocal samples from the Bastl Wave Bard maybe give the whole thing some...context?

Delay provided by the Korg NTS-1.

Recorded live on the Zoom L6, audio normalized in Audacity.

Vintage Infindibulum on Bandcamp:"

Requiem ~ Otto's Reise

video upload by Ebotronix

Arturia, Micro Freak, Mini Freak,
Expressive E Osmose,
Haken Audio ContinuuMini,
Waldorf Iridium,
Keith McMillen K-Board MIDI-Controller Galaxy,
Roland FC 200 Pedal Bass,
Hologram Electronics Microcosm Special Edition 2024,
Intuitive Instruments Exquis,
Strymon Cloudburst,
Bastl Bestie,
31.01.2026
video# 2603

Samuel Smoky Purple - live set at In_Synk Rev.5 14/12/2025

video upload by Samuel Smoky Purple

"[Live Performance Video]
Samuel Smoky Purple - live set
Event:In_Synk Rev.5
Venue:DOGENZAKA CHURCH
Date:14/12/2025

[Event organizer]
In_Synk
/ @in_synk

[VJ]
Dash
yumioooo

[equipment]
Ashun Sound Machines Hydrasynth Explorer 888
Elektron Digitone
BASTL INSTRUMENTS Kastle 2 Alchemist
Chase Bliss MOOD MKII
Modular Synth (Noise Engineering , BASTL INSTRUMENTS , RYK Modular and Five 12 etc.)
Reloop Mixtour Pro
MOTU Ultralite Mk5
Ableton Live 12
_____________________________________________________________
Samuel Smoky Purple"

Roland TR-1000 and eurorack | Hypnotic dance

video upload by Jay Hosking

"Please support my work on Patreon: / jayhosking
Buy the album here: https://jayhosking.bandcamp.com

This is a set of live, improvised dance music performed on a eurorack skiff with the Roland TR-1000. The TR-1000 provides most of the drums, and the eurorack does everything else.

00:00 - Archaios
07:33 - Elan vital
13:42 - Magnetic sleep
21:58 - Entelechy

I'm really happy with how this set turned out, and will probably try the setup again. I'd also love to give it a shot in a live environment, with actual humans dancing.

Eurorack modules:
Noise Engineering Zularic Repetitor - Gates (rhythms)
Noise Engineering Gamut Repetitor - Pitch (notes)
ALM Busy Circuits Pamela's New Workout - Synchronization, modulation, and LFOs
Forge.TME Vhikk X - Drone
Frequency Central Product - Bass
Mutable Instruments Rings - String synth
Noise Engineering Desmodus Versio - Reverb for Rings
Eowave Domino - Subtractive synth
Happy Nerding FX Aid XL - Delay for Domino
Bastl Citadel Wave Bard - Percussion
Bastl Citadel FX Wizard - Glitchy effects for Wave Bard
Qu-Bit Nautilus - Delay (on a send)
Befaco STMix - Send mixer for Nautilus
Intellijel Mixer 1U - Mixer out for Product and Domino
Intelljel Headphones 1U - Mixer out for Rings"