Two bits

Dual logic processor with chaining and CV functions
  • Two dual-input logic processors
  • 15 different functions (+ inverted: AND > NAND)
  • Simultaneously available normal and inverted outputs
  • LEDs on all outputs
  • Chaining optionally inverted by dedicated button with LEDs
  • Chaining does not waste any input or output; an additional virtual input is created in the second section
  • Functions with duration, voltage, percentage, and ratio are user editable.
  • User settings are stored automatically
  • Random pass, voltage comparator, clock mult/div and delay line functions allow CV control
  • White LEDs next to the pots confirm the matching of knob position and function
  • The outputs can be Ored by simple shorting in a multiple
  • Settings restored after power cycle
  • Firmware upgradeable by playing an audio file
  • Low consumption, skiff-friendly & compact module
  • Complements Klavis’ Logica XT with a varied feature set

Logic functions available

logic category Functions User setting Section
Simple logic And/Nand None Section 1 and 2
Advanced logic Set/Reset Section 1
Rise to pulse Pulse length
Fall to pulse
Rise/fall to pulse
Gater (gate merger) Gap length Section 2
Vote None
CV functions Random Max chance %
Voltage comparator Threshold
Clock divider/multiplier Ratio
Delay Duration
Two dual-input sections can be used independently, put in parallel for 4-input wide logic, or chained for more advanced processing.
Each section presents normal and inverted outputs.
The two sections offer a set of common and specific functions for a total 15 different ones; 30 when counting the inverted resuts (e.g. OR/NOR)
Several functions offer real-time CV control for dynamic changes of the conditions.
All time-related functions can be independently user adjusted and are saved automatically.
LEDs tell permanently the actual status of all outputs.


Dimensions mm inches Eurorack
Height 128.40 5.06 3HE
Width 25.20 0.99 5HP
Depth behind panel 21.00 0.83


Supply rail Current draw
+12V 31mA
-12V 1mA
+5V 0mA

Klavis Logica XT and Two Bits are both absolute powerhouses.

Personally, I can vouch for the Logica XL and Two Bits as being solid and featureful.

Klavis Two Bits is tough to beat based on the OP’s requirements. Klavis Logica XT offers a different formula.


Full featured presentation with musical examples
by Bries

Presentation and examples.
French spoken with English CC, by Audiorial

Martin Doudoroff presents how to use logic for audio purposes

Inspiration technology to let you create the difference
Klavis Modular Systems
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