Beast’s Chalkboard

£99.00 Inc. VAT

Dual Channel Octave Switcher/ Transposer, Voltage Adder, & Buffered Multiple

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SKU: beasts-chalkboard Categories: , , ,


‘Beast’s Chalkboard’ is dual channel stepped voltage source and adder for your eurorack modular synthesizer system.

It primarily is intended as a dual octave switcher for VCO’s but has many other uses including sequence transposition, FM ratio creation, buffered CV distribution and VCO calibration.


  • Dual channel voltage adder and source with 1V stepped range of -2 to +2 volts (i.e 5 Octaves)
  • Two Buffered outputs and through output per channel
  • Top input normalized to bottom. Allows input to be varied across both channel outputs
  • Bottom octave switcher can be chained to top extending range to 9 octaves
  • Also functions as 1->6 or dual 1->3 buffered mult.
  • Skiff friendly
  • Reverse power protected
  • Pairs well with Akemie’s Castle
  • Designed and built in England.


Width: 6hp

Depth: 22mm

Power: 30mA