Superbooth 21: Xaoc Devices Zagrzeb, Minsk & Erfurt, two new stereo modules and a binary phase akkumulator

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For Superbooth 21, Xaoc Devices adds new modules to its stereo lineup incl. a filter (Zagrzeb), stereo processor (Minsk) & a binary phase akkumulator (Erfurt).

Poland is not only a culturally rich country but also a place with very talented Synthesizer companies. Xaoc Devices from beautiful Warsaw is a developer company of very clever, unique Eurorack modules. His next travel destination will be Superbooth 21 where they present their current module lineup.

Three brand-new modules are also making their way to Berlin.

Xaoc Devices Zagrzeb Minsk Erfurt


The start makes Zagrzeb, a new 8HP stereo multimode 4-pole (24dB/oct) state-variable VCF with five distinct frequency responses. Three are available simultaneously. A highlight here is the stereo operation that is controllable with the spread knob. It moves the filter frequencies to the left and right & opposite directions making unique stereo animation effects possible. Especially, in combination with a CV source.

The filter takes inspiration from vintage Japanese synthesizers without being a specific clone of any existing design. Xaoc Devices says it’s a filter that offers smooth, clean filtering but without losing in character. And in lowpass mode, it doesn’t drop at high resonance, which is also nice.

The core of Zagrzeb is a new design that is optimized for stereo operation. However, it can easily handle mono signals. Thanks to a phase-shifting network at the input, the filter can also create a pseudo-stereo signal. An interesting stereo filter with a solid feature set. The design is a bit unusual, as the cables are on top and not on the bottom.


Let’s stay with stereo modules. Mińsk is a new 6HP hybrid stereo image processor with several areas of application. It uses analog and digital processing to facilitate advanced mid/side (M/S) manipulation of a stereo signal pair. The module gives you the ability to tweak the mid and side components of your sound/track which affects the depth and width of the auditory scene.

Mińsk offers both manual and voltage control of the stereo width. Plus, you can enhance the existing stereo image or creating a faux stereo image (stereo or mono input) with the built-in two-dimension effects. The module also works as an eliminator of out-of-phase low-end frequencies that can appear during the process of a vinyl release or before a club concert.


In the end, it gets nerdy. The new Xaoc Devices Erfurt is a binary phase akkumulator that can be used in various ways. It can be an 8-output clock and audio frequency divider, a bi-directional binary counter, or a part of the Leibniz binary system, i.e. a programmable digital oscillator.

Three interesting new modules from Xaoc Modules. The stereo modules in particular look super useful to me and could upgrade up your stereo sound design to the next level.

The new Xaoc Devices modules (Zagrzeb, Minsk, Erfurt) will premiere at Superbooth 21. Zagrzeb will cost 260€, Minsk 190€, and Erfurt 150€.

More information here: Xaoc Devices

Superbooth 21 News

Eurorack News

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