SEOK

Handmade synthesizers from Sweden 🇸🇪
Specializing in Eurorack and modular systems for creative audio synthesis.

06/06/2026

Bounce and Drips together with the new Intellijel Swells reverb. Quite a combo right? 🥰

05/06/2026

Back in stock!

Bounce sold out quickly in the US - but are now back in stock at together with our latest release Plutnik. Sign up and get 10% off your next purchase at their webshop.

Link in bio. Happy times!

30/04/2026

PLUTNIK - Patch nr 8 - Ambient Ender

With negative CV you can get up to 10min cycles with Plutnik. That’s some serious ambient modulation output. In this video we also see our Bounce module triggered by the square output to color a VCO voice and trigger some FX.

Big thanks to for the beautiful patches and video production in this demo.

26/04/2026

Music Machines Summit 2026 was nothing but a blast! It was so fun demoing our gear for visitors. Great to see so many producers of hardware, software, and weird, quirky stuff come together. We really hope it becomes an annual event. Great organization and superb artists during the evening. Thank you all - especially and for making it possible.

24/04/2026

PLUTNIK - Patch nr 6 - Sample Triggering

Trigger your samples with the various outputs for tight rhythms or full glitch mayhem.

22/04/2026

PLUTNIK - Patch nr 4 - Merge Section Riff

Yes. With the logical outputs in the Merge section, you can get waveforms that differ from each other while still feeling coherent. In this patch, our Rotaries module is used to switch between the outputs - a playful way to interact with a module like Plutnik. We really enjoy when a synthesizer is played like an actual instrument. Do it. It’s often forgotten in the modular context, where generative patches or programmed voltage control tend to be the focus.

21/04/2026

PLUTNIK - Patch nr 3 - Mandatory Pings

Cross and filter modulation for those sweet pings. By the way, we’ve designed Plutnik with dual color LEDs to make sure the user knows whether the signal is positive or negative. What do you think about it?

20/04/2026

PLUTNIK - Patch nr 2 - Square FM Drone

This LFO makes a perfect companion for your VCOs to make harmonic FM synthesis. Modulate your filter as well and you’re set.

18/04/2026

PLUTNIK - Patch nr 1 - Tri Cross Mod

Cross-modulate to unlock this module’s inner voice. When combined with the morph k**b, you can dial in rich harmonics and resonances as the waveforms sync, collide and interact.

Big thanks to for the collab. He’s the artist behind our beautiful demo videos. Make sure to follow his brilliant work if you like modular synth and visual effects. 🔥

17/04/2026

NEW RELEASE

Plutnik is a complex dual VC-LFO with Morph and Merge functions. Relational logic and external input possibilities.

A pure modulation party in a small footprint.

Check out our website or the YouTube demo for more info. Links in bio.

Adress

Linköping

Webbplats

https://seok.se/, https://www.perfectcircuit.com/seok

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