Log In / Register
Account
More Info
🇺🇸 US Customers
- Info for US customers
- All products shipping to the USA

Skip to navigation Skip to content

£0.00 0 items

Search products …

Shop
Brands
- All Brands A-Z
  
  4ms Company
  
  ADDAC System
  
  AI Synthesis
  
  AtoVproject
  
  BASTL
  
  Befaco
  Black Noise
  
  CCTV
  
  Clacktronics
  
  Cutlasses
  
  DE – Djupviks Elektronik
  
  Divkid
  
  Erica Synths
  Emute Lab
  
  Expert Sleepers
  
  Feedback Modules
  
  Infinite Digits
  
  Isntses
  
  Kassutronics
  
  Ksoloti
  Making Sound Machines
  
  Molten Modular
  
  Music Thing Modular
  
  Mutable Instruments
  
  Neutral Labs
  
  NOH Modular
  
  NYSTRÖM
  Patching Panda
  
  Plinky Synth
  
  Robaux
  
  RYK Modular
  
  Sebsongs
  
  Shakmat Modular
  
  Tesseract
  Thonk Synth
  
  Threetom Modular
  
  Timo Rozendal
  
  Vostok Instruments
  
  Wirehead
  
  Zlob Modular
  
  Zlosynth Instruments
Function
- 1U Tiles
  
  Clocks
  
  Controller
  
  Distortion
  
  DIY Utility
  
  Drums
  
  Effects
  Envelope / LFO
  
  Esoteric
  
  External / MIDI
  
  Filter
  
  Logic / Switching
  
  Mixer / Panning
  
  Modulator
  Oscillator
  
  Passive
  
  Power
  
  Program / Development
  
  Quantiser
  
  Random / Noise
  
  Sampling
  Sequencer
  
  Stereo
  
  Synth Voice
  
  Utility / Multiple
  
  VCA / Attenuation
  
  Waveshaper
HP Size
- 0 HP
  
  2 HP
  
  3 HP
  
  4 HP
  
  5 HP
  
  6 HP
  
  7 HP
  8 HP
  
  9 HP
  
  10 HP
  
  11 HP
  
  12 HP
  
  14 HP
  
  16 HP
  17 HP
  
  18 HP
  
  20 HP
  
  22 HP
  
  24 HP
  
  26 HP
  
  28 HP
  30 HP
  
  32 HP
  
  34 HP
  
  42 HP
  
  44 HP
  
  46 HP
  
  50 HP
Eurorack
Synth DIY Kits
Parts
__SALE PRODUCTS__

🔍 Search For Products
🇺🇸 US Customers 🇺🇸
🇺🇸 All products shipping to the USA 🇺🇸
__SALE PRODUCTS__
Account / Log In / Register
Eurorack
Desktop Synth Kits
Discounts & Promotions
Gift Vouchers
Brands
HP Size
Module Function
All Parts
- Knobs
- Potentiometer
- Jacks
- Semiconductor
- Switch
- Tempco
News
CONTACT

Home / Browse All / Parts / Knobs / Slider Caps

Slider Caps

Filter Products

HP Size

Function

Price

Min — Max £

–

02

Clear

Reset Filters

Sort By

Hide out of Stock Items

Showing all 6 resultsSorted by latest

Sifam – Micro Soft Slider Cap
£1.05 (Excl. VAT)
Sifam Slider Caps
Price range: £0.90 through £1.30 (Excl. VAT)
Sifam – Sleek Slider Caps
£0.89 (Excl. VAT)
Switch & Slider Caps
Switch & Slider Caps – Mini
£0.99 (Excl. VAT)
Switch & Slider Caps – Sub-Miniature
£0.99 (Excl. VAT)

Showing all 6 resultsSorted by latest

Filters

Hide out of Stock Items

HP Size

Function

Price

Min — Max £

–

02

Clear

Currency converter

USD, EUR, AUD, CAD & JPY do not include PayPal fees. For rough guide only.

GBP
USD
EUR
AUD
CAD
JPY
Reset

Instagram

thonksynth

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

The full Mylar Melodies video of the Music Thing M

The full Mylar Melodies video of the Music Thing Modular WORKSHOP SYSTEM is on the Mylar YouTube channel now. Link in bio.

IS it potentially the first and last modular system you might ever own?

In stock now at Thonk. Della is a 3HP Eurorack ex

In stock now at Thonk.

Della is a 3HP Eurorack expander module for Scrooge. This module is completely passive, and performs the simple function of exposing all 8 sequencer tracks to the outside world via dedicated sockets. Della is intended to be used with the Eurorack DIY version of Scrooge. Della connects to a header on the back of the Scrooge module, which is inaccessible in the desktop version.

Seemed like a great idea until I had to sort throu

Seemed like a great idea until I had to sort through 500 caps with tweezers 😅

ALL our KNOBS are in the Thonk Summer Sale. Now extended to Monday!

thonk.co.uk or link in bio

Lazer Phazer is at its core a 2x System700 phaser

Lazer Phazer is at its core a 2x System700 phaser with a lot of addons. The module can work as a stereo phaser, as a mono BI-Phaser, or as two totally independent phasers, or as a 16stages phaser in series mode.

And that’s not all, the LFOs of the phasers can work independently or linked in inverted mode for stereo phase galore.
The feedback can be modulated by internal LFOs, external CVs or both of them in the same time. The kit includes 16 x 2SK30A fet transistors matched and selected from new old stock, so the retro sound it’s totally there.

This module is a collaboration between Feedback Modules and CMS-LAB.

Kit In stock now at Thonk!

Right now we have at least 10% off ALL parts and A

Right now we have at least 10% off ALL parts and ALL Eurorack DIY kits. There is up to 50% off some items. Shipping anywhere in the world.

Some products have over 50% discount.
Go to THONK.CO.UK now.

Follow on Instagram

Links

Drop us an email
Thonk on Instagram
Thonk on YouTube
Thonk on eBay (UK customers only)

.Gift Vouchers.

.Discounts and Promotions.

Search Products

Search products …

Currency converter

USD, EUR, AUD, CAD & JPY do not include PayPal or Credit Card fees or currency conversion costs. For rough guide only.

GBP
USD
EUR
AUD
CAD
JPY
Reset

Subscribe to our mailing list

We will never give your email to a third party. Typically we do not send emails more than once a month.

CLICK HERE TO SUBSCRIBE

© Thonk - DIY Synthesizer Kits & Components 2025
Privacy & Cookies Policy

My Account
Search

Search products …
Cart 0

Hey, you’re not on our mailing list

Maybe you should be?

SUBSCRIBE

Email Address *

SearchClear