Twin Waves mkII

£209.00 (£174.17 ex VAT)

Voltage-controlled Dual VCO/LFO with 20 Synthesis Algorithms, Thru Zero FM, Quantizer, Suboctave, Integrated VCA & more..

In stock

SKU: twin-waves-mkii Categories: , , ,


NOTE: The MKII version does everything the original Twin Waves did and more!
(hence some demo videos show off the original, but are still relevant in terms of sound and basic functionality)

Klavis Twin Waves is an extremely fully-featured voltage-controlled dual VCO/LFO. The two oscillators can independently be set as either a VCO or LFO, and a wide range of synthesis algorithms are available.

The “MKII” evolution of Twin Waves brings a redesigned layout, additional knobs for more hands-on fun and easy semi-modular cross-patching between sections.

All of the original features are present: a top selection of synthesis techniques, each with their key parameter directly at hand, enriched by a full set of complementary features.


  • Same width as original
  • All capabilities and features of the original have been retained.
  • Three dedicated modulation gain pots have been added.
  • Semi-modular cross-section patching is now possible.
  • Additional tweaks & improvements implemented.

Whereas the original Twin Waves required +/-5V signals to benefit from full scale modulation, the new version requires less and has gain knobs for all 3 modulation inputs.

These new gain knobs are even more beneficial, given that normalling of their outputs to the other section’s modulation input(s) allows creative results without requiring extra patching. This offers an easy and creative access to “complex oscillator” fun and cross modulation craziness..

Using the outputs does not break their normalling; this avoids using a “multiple” when the output signal should go both inside and outside the module. Of course, if you would rather use an external modulation source, simply connect it to the relevant CV input and this will override the internal normalling.

The dedicated Square1 output of the first oscillator is normalled to the global sync/clock input. This allows synchronizing the second oscillator both for audio and LFO/random purposes.


Features in VCO mode:

  • V/Oct tracking over 10 octaves
  • Through zero & Linear FM
  • Sub-octave output
  • Hard & soft synchronization
  • VCA control and CV algorithms selection
  • Quantizer with various scales
  • 20 Algorithm-based synthesis types among:
    • Wave shaping
    • Phase modulation
    • Phase positioning of multiple waves
    • 5 stacked oscillators in tunable unison
    • Self-sync with phantom oscillator
    • Additive synthesis (7 waves)
    • Variable bit reduction (bit-crushing)
    • Ring modulator with its own 2nd oscillator
    • Noise with LPF, BPF, or resonant filter

Features in LFO mode:

  • Simultaneous signal and trigger outputs
  • Wave synchronization
  • Clock controlled rate with multiplier and divider
  • CV and knob control of output level
  • Algorithm based wave engine with a selection of:
    • Wave shaping
    • Phase modulation
    • Random levels and vectors (also Brownian)
    • Randomly spaced triggers and waves

Other features include:

  • Display with contextual icons and instant reminder help text
  • LEDs indicating potentiometer vs. value matching, switch settings and output levels
  • Automatically saved settings for instant recall at power on
  • Firmware update via a simple audio file

Firmware Updates (1.11 to 1.25) main additions:

  • Audio algorithms selection by CV
  • Quantizer’s base note settable + CV control
  • Relative/Absolute modes in Self-Sync algorithms
  • Enriched LED feedback
  • New scales in the quantizers
  • Quantizer’s scales full names in the scrolling help
  • New CV mode: BZX FM – Bipolar thru-zero crossing FM
  • Any algorithm combination can be used freely in both oscillators
  • VCA in audio mode
  • Potentiometer locking capability to avoid detuning by mistake

Width: 8hp
Depth: 21mm
Power: 52mA @ +12V @ / 17mA @ -12V


DEMOS OF THE MK1 (still relevant for general overview & sonics)