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Bastl – Kastle ARP – Full DIY Kit
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IMMUTABLE MARBLES from @cctvfm is a black panel fu

IMMUTABLE MARBLES from @cctvfm is a black panel full-sized clone of Mutable Instruments’ best-selling open source Random Sampler. In stock now at Thonk.

Much like the interplay of its metamorphic namesake, Marbles specialises in random responses to an initial impact. The module is organised as three sections: the t section generates and processes clocks and triggers, the X section generates and processes voltages, and the DEJA VU section imposes structure, in the form of repetition, upon all the events generated by the two other sections.

Though thoroughly concerned with chance, the UI leaves plenty of options for imposing some semblance of structure. Sync it with external clocks, manipulate the orientation of generated elements, or introduce external CV and gate sequences! No matter what source causes the initial impact, Marbles will respond with elegant randomness.

This kit has the SMD parts pre-assembled, leaving only the through-hole parts to solder. These boards are also PRE-CALIBRATED, meaning no fussy computer nonsense is needed, just build it and go.

Go to thonk.co.uk or see link in bio.

TRIPLE MOD is an easy to build compact multi modul

TRIPLE MOD is an easy to build compact multi modulation machine with 3 channels of AD envelopes and bonus modes of Skew LFO, Turing Machine, Sample & Hold and Slew.

Available now from thonk.co.uk, link in bio.

Check out the link in our demo also for the in-depth module demo from @divkidvideo

Our workshop runs 12-3pm. Get there earlier to bui

Our workshop runs 12-3pm. Get there earlier to build a TRIPLE MOD or by 1pm if you want to build the cheaper/quicker BUF or TAT.

DIKTAAT is 4-channel performance-oriented trigger

DIKTAAT is 4-channel performance-oriented trigger sequencer in 10HP. Create and mutate trigger sequences on the fly with it's intuitive hands on style.

We have been meaning to post about DIKTAAT for a few weeks now but we can't keep it in stock as it keeps flying out!

Link in bio or go to thonk.co.uk

New from our in-house module brand 'Thonk Synth' i

DIY Kit at thonk.co.uk now! At its core, Hive is

DIY Kit at thonk.co.uk now!

At its core, Hive is a four-channel stereo mixer with CV-controlled panning per channel, but like any other Vostok module, Hive comes with several quirks that make it a handy module for every system.

Each channel can boost incoming signals to perfectly match the level of your different modules, as well as bring pro-line level devices, such as desktop synthesizers or drum machines, into your rack.

The panning works with a custom panning-law slope of -1.5dB attenuation at the center position, ensuring smooth balance transitions either manually or with CV.

Several modules can be chained together using the dedicated connectors located at the back, allowing the use of other Hive modules as channel expansions or submixes.

Hive packs a bunch of useful features into a compact 10HP layout, making it a perfect stereo mangler, FX sub-mix system, end-of-the-line mixer, and much more.

DIY Kit at thonk.co.uk now!

Introducing a limited edition re-release of this i

Introducing a limited edition re-release of this iconic electronic instrument in DIY Eurorack format.

In stock now at thonk.co.uk - limited edition.

This module is a tribute to the pioneering work of Dutch musician and instrument maker Michel Waiswisz (1949 – 2008), who first invented the Cracklebox with Geert Hamelberg in the late 1960s.

The Cracklebox was a small, handheld device designed as a way to explore new sonic territories. It was one of the first electronic musical instruments to use circuit bending techniques in the creation of electronic music. It allowed musicians to manipulate and control electronic circuits in real-time, creating a wide range of unique and experimental sounds. Waiswisz used a circuit from a toy piano as the basis for the instrument, and then added a series of touch-sensitive pads that were connected to the circuit. When a player touched one of the pads, the circuit would be completed, producing a crackling sound.

The Cracklebox was probably the first commercially available portable self-powered alternative ‘keyboard’ analog electronic instrument with inbuilt loudspeaker. In the 1970s about 4000 Crackleboxes were built and sold by STEIM in Amsterdam. Nowadays many people refer to the The Cracklebox as the archetype of ‘glitch’ or ‘circuit bending’.

In stock now at thonk.co.uk - limited edition.

Available now at Thonk and Perfect Circuit

Available now at Thonk and Perfect Circuit

Plinky+ is a deluxe and more spacious iteration of

Plinky+ is a deluxe and more spacious iteration of the much loved Plinky polyphonic expressive touch synthesizer

Out now at Thonk.co.uk

Plinky+ is a deluxe and more spacious iteration of

Plinky+ is a deluxe and more spacious iteration of the much loved Plinky expressive polyphonic touch synthesizer. In stock in assembled and DIY versions.

Get it now at Thonk.co.uk

Thonk now have the Workshop System Program Cards a

Thonk now have the Workshop System Program Cards available in a colour trio pack. Purple, yellow and red!

thonk.co.uk or link in bio

In stock now at Thonk.co.uk - Link in bio! The Da

In stock now at Thonk.co.uk - Link in bio!

The Dark Harvestator is a psychogeographic DIY standalone noise synth from Isn’tses.

It is a standalone PCB-art synth circuit which can create a wide range of textural noise, tones and chaotic bleeps. Overall the sound is very noisy, harsh and brutal, evoking crackly wartime sounds, radio interference, the rage of the sea and the Bacillus Anthracis. It also can produce some more continuous drone or synth sounds depending how you play it.

The synth is inspired by the disturbing history of Gruinard Island, AKA Anthrax Island, in Scotland and the bio-warfare experiments that took place there at the end of WW2. Its name is based on the mysterious group ‘Dark Harvest’ who protested for the cleanup of Gruinard by leaving contaminated soil from the island outside government buildings.

In stock now at Thonk.co.uk - Link in bio!

UPDATE: WHOAH, these went fast, more stock coming

UPDATE: WHOAH, these went fast, more stock coming soon!

Erica Synths present this very affordable lo-fi sample mangler based on the Raspberry Pi Pico!

The Pikocore is a lo-fi music mangler based on the Raspberry Pi, developed by Zack Scholl at Infinite Digits. There are eight buttons and four knobs that can be used to manipulate the loaded samples. The buttons can be used to jump between samples and re-trigger audio in real time, while the knobs can be used to switch and edit various parameters including: Probability, Time-stretch and Sequence recording/playback. Button mashing is encouraged!

The original version of Pikocore came in a miniature pocket calculator form factor, but Erica Synths wanted to make it more playable, so they reached out to Zack and developed this Pikocore XL version that has identical functionality, but comes with Erica Synths signature hands on user interface and a proper aluminium enclosure with DC power supply.

Infinite Digits Pikocore XL by Erica Synths is a full DIY kit that includes all components to build an instrument and put in in action straight away. The RP board in the kit is pre-programmed and ready to use.

Link in bio or go straight to thonk.co.uk

MKI and Erica Synths come with a T-shirt for circu

The Thonk August Weekend Sale starts at 4pm (UK ti

The Thonk August Weekend Sale starts at 4pm (UK time) on Thursday 31st July 2025 and ends on Sunday 3rd August 2025 at midnight. All products have at least a 10% discount. Pots, knobs, jacks and switches have a 20% discount.

All discounts are added automatically in the cart, any physical products you purchase during this period on thonk.co.uk will be discounted.

The AI028 Voltage Controlled Matrix Mixer is a 6-i

The AI028 Voltage Controlled Matrix Mixer is a 6-input, 6-output Matrix Mixer, with 36 VCAs to control how much each input is fed to each output (0-5V).

Love feedback patches and want to take them to the next level? Or looking for the final piece in your chain to dial in specific complex CV control from your DAW outputs? This is for you!

Link in bio or go to thonk.co.uk

So we thought these all disappeared back in early

So we thought these all disappeared back in early 2024 when Émilie sent us the final batch from her stock... but her manufacturer Rogan got in touch a few months ago to say they found just a few more hidden in the factory, in perfect like new condition, don't sleep as this is truly the end!

Link in bio or thonk.co.uk

Two new DIY Eurorack modules from Jolin in stock n

Two new DIY Eurorack modules from Jolin in stock now at Thonk.

ROSA is a multi-mode crossfader, scanner, and switcher module designed to morph between up to four inputs and outputs. With it's WAVE and PASS modes and KNEE and SHUT controls this module offers lots of different approaches for creative performance of your modular system.

KRONO is a 4HP programmable multi-mode clock and rhythm generator module featuring tap tempo, state persistence, CV group swap and 12 independent outputs. Copy, sync and multiply clocks with algorithmic flexibility and generate complex, evolving, and synchronized clock patterns via multiple outputs. Euclidean, chaos and polyrhythmic options and much more.

Link in Thonk bio or go to thonk.co.uk

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