Xaoc Devices Intros Katowice Stereo Variable Band Isolator, Sarajewo Syncable Analog Delay Line

Xaoc Devices has introduced two new modules, the Katowice 1978 Stereo Variable Band Isolator & the Sarajewo 1984 Syncable Analog Delay Line, for Eurorack modular systems.

Katowice is a stereo variable–band isolator that lets you manipulate a selected range of frequencies. It is the first in a planned series of modules for processing stereo signals.

Katowice splits the stereo input signal into three bands: low, middle, and high. While the knobs and CV inputs define the center frequency and bandwidth of the mid band, the low and high bands are automatically adjusted so that the sum of all three is a complete signal. All three bands are passed through VCAs and their stereo outputs are available separately for further processing. A stereo mixdown signal is also available.

Katowice may be used as a crossover network, a parametric EQ, DJ-style kill filter, or other band-selective applications, including multiband compression and stereo enhancement.


  • 3-band, 24dB/oct crossover module
  • Voltage controlled band configuration
  • Three stereo VCA blocks
  • Voltage controlled attenuation in each band
  • 10hp, skiff friendly
  • Current draw: +100mA / –100mA
  • Reverse power protection

It’s available now for 240 EUR.

Sarajewo is an analog delay module, based on ‘old school’ BBD (Bucket Brigade Delay) chips. It features three delay taps, an external clock input with various tempo sync factors, and a wide range of settings controllable via CV.


  • BBD-based analog delay unit
  • Up to 1560ms of analog delay times
  • Three delay taps with individual outputs
  • External clock synchronization
  • Manual tap tempo function
  • Variable tempo divisions and multiplications
  • Automatic bandwidth control
  • Tilt filter in feedback loop
  • External feedback loop input
  • 12hp, skiff friendly
  • Current draw: +180mA/-120mA
  • Reverse power protection

The Sarajewo is available now for 420 EUR.

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