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Home / Brands / Feedback Modules

Feedback Modules

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Feedback – LFO100 – Full DIY Kit
£78.00 (Excl. VAT)
Feedback – JP8 VCF – Full DIY Kit
£126.00 (Excl. VAT)
Feedback – ENV-100 – Full DIY Kit
£44.00 (Excl. VAT)
Feedback – Static – Full DIY Kit
£46.00 (Excl. VAT)
Feedback – ENVF – Full DIY Kit
£45.00 (Excl. VAT)
Feedback – Pre CR – Full DIY Kit
£50.00 (Excl. VAT)
Befaco – FX Boy – Full DIY Kit
£259.00 (Excl. VAT)
Feedback – 4XXX Compressor – Full DIY Kit
£148.00 (Excl. VAT)
Feedback – Lazer Phazer – Full DIY Kit
£165.00 (Excl. VAT)
Feedback – Pre BX – Full DIY Kit
£39.00 (Excl. VAT)
Feedback – LFO20 – Full DIY Kit
£39.00 (Excl. VAT)
Feedback – VCZIIIA VCO Premium – Full DIY Kit
£150.00 (Excl. VAT)

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thonksynth

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.

Mylar Melodies says: "NEW VID! I filmed a short b

Mylar Melodies says:

"NEW VID! I filmed a short but very sweet pure melodic bliss ambient live set by @mypandashallfly where he plays just the @musicthingmodular Workshop System, with FX from the @rebeltechnology Alchemist, and looped by the @korguk Kaoss Pad 3.

It's a lesson that less can most definitely be more when it comes to live performance. Suren by the way was playing @chris.johnson074's Lowpass Gate and Quantiser 'Utility Pair' on the Workshop.

The full set is 11 mins long. Live on the channel now, link in bio 🥳"

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. Shipping anywhere in the world.

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

Patterns is a 4 channel Eurorack sequencer designe

Patterns is a 4 channel Eurorack sequencer designed for deep flexibility and hands on performance. Link in bio or go to Thonk.co.uk

Each channel supports up to 64 steps, with essential creative tools like randomisation, probability, gate length control, swing, clock divisions, and more, giving you everything you need to build evolving, dynamic rhythms.

The real power of Patterns lies in its dedicated Pattern button, your instant gateway to 16 different pattern slots. Switch between them on the fly, program your custom pattern chains, or use CV to jump between patterns and create unexpected breaks, fills, and experimental grooves.

Rhythmatic is a 6 voice analogue drum machine base

Rhythmatic is a 6 voice analogue drum machine based on the classic Roland CR-78 and updated with intuitive performance features.

In this video we show how the Music Thing Modular Minidrive can really make Rhythmatic growl and later on accompany it with some chords from the Sebsongs Bread & Butter module.

DIY KIT available at Thonk now! Link in bio or go to thonk.co.uk

Only three places left, link in bio! ----- The S

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