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Bastl – Kastle ARP – Full DIY Kit
£82.00 (Excl. VAT)
Bastl – Kastle Drum – Full DIY Kit
£82.00 (Excl. VAT)
BASTL KASTLE 1.5 – Full DIY Kit
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thonksynth

Triple Mod goes perfectly with our brand new DOUBL

DOUBLE BUBBLE is a dual multi‑mode analog filter

Triple Mod is in the Thonk November sale! In this

Triple Mod is in the Thonk November sale!

In this patch @divkidvideo shows what modular can do best, taking relatively simple CV sources and creating dynamic, expressive, interesting and complex results.

In this classic bouncing ball patch Ben takes a gated LFO and two envelopes from the Triple Mod and patches them to create this lolloping, ratcheting dynamic funk.

Triple Mod is available as a DIY kit from Thonk right now, and is currently discounted in the cart in our November sale.

Grid is a modular creative controller built for mu

Grid is a modular creative controller built for musicians, producers, video editors and all digital artists who demand more from their gear.

Available now for the first time as a solderless purely mechanical DIY kit on Thonk. Whether you’re in the studio or on the go, Grid gives you the tools to work the way you want.

Separate Grid modules connect magnetically and draw power from a single USB-C cable. Without the need for a hub, one cable enables control over your whole Grid setup, and supplies enough power for up to 8 modules connected together.

More than just a MIDI controller—Grid is a customizable control surface that adapts to any creative workflow. From tweaking synth parameters to launching clips or triggering automations, Grid is made to keep up with your creativity.

Available at thonk.co.uk NOW

Polaxis have been deep in the world of speech synt

Polaxis have been deep in the world of speech synthesis for over 10 years, now they are finally ready to unveil the next generation of their very first speech synthesizer – introducing Talko 2!

Talko 2 is presented in two formats – here we have the desktop version, and there is also an 18HP Eurorack module. Both are functionally identical speech synthesisers which speak numbers, alphabets, phonemes, and classic phrase banks, with real-time pitch, speed, and effect manipulation using the onboard controls or via CV inputs.

Trigger sounds using the “Speak” button or via the CV gate input. Apply real-time effects such as filter, ring mod, reverb or growl, glitch out the playback using the “Error” button – designed to mimic a circuit-bent Speak & Spell!

Talko 2 is designed for experimental voices and robotic textures, this talking machine is both a classic speech engine and a unique sound-design tool!

New stickers for everyone buying our Thonk Synth r

New stickers for everyone buying our Thonk Synth range of modules. Don't forget we're knocking 15% off all the Thonk Synth range until end of November, up to 20% off if you order a few modules. Go to Thonk.co.uk

#stickers #mostimportantpart

And everything else we stock is too! Go to thonk.c

And everything else we stock is too!
Go to thonk.co.uk now

US customers get a slightly different deal, we pay half your Trump Tariffs instead 💩

The mighty mini BIB from Plinky Synth is in our No

The mighty mini BIB from Plinky Synth is in our November sale at Thonk. Got to thonk.co.uk to buy now.

A 1U stereo FX powerhouse. First it overdrives the signal (red), then feeds it through a stereo delay (green), next is a lush reverb (blue), and then finally a wet/dry mix and final output volume control (white).

Sale is now on at thonk.co.uk Ends November 30th 2

Sale is now on at thonk.co.uk
Ends November 30th 2025

* At least 10% off everything
* 15-20% off thonk synth range
* Up to 70% off some sale products
* US customers we have a Trump Tariff deal, we split the duties 50/50 with you. Paid in advance, no surprises on doorstep.

Two important new releases from Sound Semiconducto

Two important new releases from Sound Semiconductor today!

The SSI2100 is a new generation bucket brigade delay, developed on a modern IC process for performance improvements and new features while preserving the “mojo” of such beloved and quirky analog delay circuits.

A 512-stage bucket chain allows a wide range of delay times from a clock frequency of 1kHz to over 2MHz. A novel circuit (patent pending) allows easy connection of multiple SSI2100’s for longer delay times without having to recalibrate inputs and outputs.

An additional benefit to daisy-chaining is access to intermediate feedback taps for interesting reverb and other psychoacoustic effects.

An integrated clock driver greatly simplifies external clock sourcing and is TTL-compatible, making a companion BBD clock IC unnecessary.

Also on-chip is a tetrode bias voltage generator that eliminates the need for externally providing the legacy “14/15 VGG” supply voltage.

The SSI2100 is available in a super-compact 8-lead SOP surface-mount package.

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The SSI2160 is a budget single-channel VCA building block for high-performance audio applications. Voltage control of current-mode inputs and outputs allow an exponential gain range of +20dB to 100dB, with control provided by a ground-referenced 33mV/dB constant.

The device offers considerable flexibility for a wide range of design goals and applications. A unique mode control allows selection of Class A, Class AB, or in-between using a single resistor. The SSI2160 can be used as a high-quality building block for a variety of applications such as dynamic range processors, voltage controlled filters, exponential generators, and antilog converters.

The SSI2160 will operate on supplies as low as +8V for battery-powered devices such as guitar pedals, or up to ±18V in systems where maximum headroom is desired.

The SSI2160 is part of a family of affordable high-performance VCA’s from Sound Semiconductor.

Available now at Thonk.co.uk @soundsemiconductor

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

PLINKY+ IS AN EASY MECHANICAL BUILD – NO SOLDERING REQUIRED!

Welcoming Decade Bridge to Thonk! TRIAD is an aff

Welcoming Decade Bridge to Thonk!

TRIAD is an affordable 3 oscillator square wave drone/noise/glitch synth, capable of generating a range of tones and sounds from strong lead type sounds to glitched out clicks and pops.

The 3 oscillators drive and reset each other in different ways depending upon the switch/button settings, and an external trigger, gate or clock can also be used to reset 2 of the 3 oscillators.

TRIAD works great as part of a drone or noise setup, makes for excellent sample fodder, and thanks to the neat “reset” input it can play along with drum machines and sequencers (especially when paired with a little low-pass gate).

TRIAD is powered by a 9V center-positive power supply or batteries.

DIY Kit available now at Thonk.co.uk!
Link in bio.

A hands-on rhythm engine with a minimalist interfa

A hands-on rhythm engine with a minimalist interface. Available from thonk.co.uk now!

The Drum sequencer from @ericasynths and @moritzklein0 is the latest edition in the mki x es.edu DIY Eurorack range.

Most drum sequencers are complex machines – packed with buttons and LEDs, all driven by a microcontroller. For this DIY Drum Sequencer kit, MKi and Erica have decided to take the opposite approach: a hands-on rhythm engine with a minimalist interface, built from just a handful of logic chips.

Each of the sequencer’s four channels is programmed in real time using a single button. Patterns loop automatically, can be shortened on the fly, and support half-time playback for slower, evolving grooves. Accents are handled using synced LFOs, while a simple resistor-DAC turns patterns into stepped control voltages – perfect for modulating pitch, decay, or other parameters.

Whether you’re looking to learn about sequencer design, sharpen your soldering skills, or just want a drum sequencer that plays like an instrument, this DIY kit packs surprising depth into a refreshingly simple interface.

Available from thonk.co.uk now.

As well as their innovative CVD LEDs that we told

A monster recreation of the original 1970s Elektor

A monster recreation of the original 1970s Elektor Formant modular system featuring 27 modules! Available now at Thonk.co.uk!

@ericasynths have pulled out all the stops and recreated an extended version of the legendary Elektor Formant synthesizer, a complete modular system that was originally released as a DIY kit by Elektor Magazine during the late 1970s.

Working in collaboration with Harald Antes of haraldswerk.de, Erica Synths have developed a modular system based on the original designs while also adding some new modules to take its functionality to the next level. The unique internal normalisation of the original system has been preserved, so the Formant system can also be played without patching, exactly as described in the original Elektor Formant manuals.

Available now at thonk.co.uk - link in bio.

We thought this was really cool and we had to stoc

We thought this was really cool and we had to stock it.

The Hakai Labs / Danesi Designs Colour Vision Deficiency (CVD LED) is a high quality custom designed bi-polar 3mm Red/Green LED that’s been manufactured for the inclusivity of colour vision deficient (CVD) individuals without any sacrifice to those without a colour vision deficiency.

A small colour shift was made to the wavelength of the green side of the LED to push it closer to blue in the visible spectrum. This slight shift is enough to enable colour vision deficient individuals to fully distinguish between the red and the custom green/teal colours emitted by this LED.

In stock now at thonk.co.uk

As used in designs by:

* Crey Emporium - @crazyemperor893
* Hakai Labs - @hakailabs
* HiveMindSynthesis - @hivemindsynthesis
* SetonixSynth - @setonixsynth

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

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