Mixwitch

Mixer & Switcher
  • Dual 2 to 1 mixers, normalized into 4 to 1
    • Click-less mute per mixer
    • Click-less polarity inversion per input with LED indication
    • Modulation vs. audio mode selection (lin/log) per mixer, with change of potentiometer curve response and LED indication.
    • Two LEDs on each output showing the amplitude and polarity of the output signal
    • Unconnected inputs present a fixed voltage to ease offset creation
    • Full range DC-coupled analog signal path
  • Switch/Selector
    • Switch among 4 inputs, only 2, or disabled
    • Select an input sequentially with a clock/trigger
    • Select an input randomly with a clock/trigger
    • Select an input in relation to a control voltage
    • CV and clock control are audio rate capable
  • Settings retained over the power cycle
  • High-quality potentiometers with metal shaft
  • Skiff-friendly & compact module

"Standout modules of the last couple of years?"
This is the post/query on Muffwiggler's forum where the Mixwitch was mentioned as "the most clever module you can get dollarwise".
It's a deceptively deep little module.
cptnal
I love the Klavis Mixwitch. It does switching and a lot more (check the manual), feels well made and is priced very kindly.
My best value buy yet, I think.
Super useful for feedback loops!
I only had one for a couple of days before buying another.
Some options like the Mixwitch are really flexible and have me thinking outside the box.
I like that.
Love the clocked random switcher to offset pitch. Inject a little LFO CV for movement.
It has so many functions it is absolutely briliant.
In another patch it can be an half Audio mixer / half CV mixer with clock / CV switching on the B inputs.
The list goes on.
If I go beyond oscillators there are tons of modules of great value.
Klavis Mixwitch is the greatest though.
I have three of them and I wouldn’t say no to another one.
It’s small, relatively inexpensive, has log or linear response, can be configured as 4:1 or 2:1, provides voltage out per channel, and can be stepped clicklessly per channel in a variety of ways.
It’s a super useful module.
...the best must be Klavis Mixwitch.
Mixer/switch/sequencer/etc in a clever, sturdy package for very little money
Mixwitch applications described in the manual
  • 1. Control signal mixer
    with pots acting linear
  • 2. Audio mixer
    with pots acting logarithmically and mix level muted by 6dB
  • 3. Four step sequencer/randomizer
    generating CVs for a sequential or random melody set by the 4 pots
  • 4. Simple sub-octave generator
    using only one half of the module
  • 5. Complex sub-octaves generator
    one and two octaves below freely mixed and tweaked
  • 6. Simple granular synthesis
    using any VCO with multiple wave outputs
  • 7. Multiple-segment waveshaper
    fill each quarter-wave with other waves segments
  • 8. Phase-controlled wave-stitcher
    using PWM for control and a pair of audio sources
  • 9. Voltage controlled transposer
    to up to 3 or 5 independent tunings
  • 10. Drum randomizer
    in combination with some rhythm pattern generator
  • 11. Digital inverter / signal amplifier
    using one half of the module
  • 12. Voltage window comparator
    does switching/gating when a signal is within a specific range
  • 13. Drum selection in sequencing applications
    using one CV/gate pair for 4 drum sounds
  • 14. Random clocking – Chance generator
    with settable occurrence
  • 15. Two-input logic AND / NAND gate
    for digital duties
  • 16. Two-input logic XOR gate – Digital ring-modulator
    for exclusive selection or MS20-like ring mod
  • 17. Saw to PWM with manual or CV control
    for audio shaping or LFO gate length adjustment
  • 18. Hard clipping
    for audio shaping and distortion

Focused versatility seems an oxymoron when describing the features that led us to design the Mixwitch.
With only a pinch of mixing, inverting and controlled switching, we brew up a plethora of combinations and uses.
This is voltage processing magic!

The Mixwitch design comes from a frustration with attenuvertors (bipolar attenuators-inverters) whose off (neutral) position is difficult to retrieve, especially in live situations.
We went for a digitally-controlled analog path where polarity inversion would be at the touch of a button. So, the usefulness of attenuating/inverting can be realized by turning the pot down, swiftly pressing the inversion button and reopening the level. The zero level is where you expect it, with the pot full down.
Once we had a clean polarity control, we easily added a mute function offering the benefit of pre- adjusted pot settings ready to be activated at will.
The next step was to bring something extra, useful and creative. There are plenty of analog switches controlled by a clock; but arbitrarily selecting an input with a voltage is less known. Having both control capabilities combined with our specific mixer features creates a unique fusion: welcome to the Mixwitch !

Mechanical

Dimensions mm inches Eurorack
Height 128.40 5.06 3HE
Width 40.00 1.57 8HP
Depth behind panel
(with supply cable inserted)
25.00 0.98

Supply

Supply rail Current draw
16-pin (old)
Current draw
10-pin (new)
+12V 22mA 39mA
-12V 26mA 24mA
+5V 13mA 0mA

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