MIDI interface

Yarns is a MIDI interface offering up to 4 channels of CV/Gate conversion, and providing some of the MIDI message mangling features of Mutable Instruments' MIDIpal, including arpeggiator, euclidean sequencer, and a SH-101 inspired step sequencer.

Yarns provides 4 CV outputs and 4 Gate/trigger outputs, which can be assigned to up to 4 voices. In single voice mode, note, velocity, modulation and aftertouch (or other CC) CV are produced, along with a gate, a trigger, and a clock/reset output. In two voices mode, two channel of note, modulation or aftertouch CV are produced, along with two gates, and clock/reset outputs. Finally, in four voices mode, four pairs of CV/Gate outputs are provided.

The 2 and 4-voice modes are available both in a "polyphonic" and "multitimbral" flavour. The former receives chords from one single MIDI channel and dispatches them to the voices; while the later provides independent monophonic parts - which can be addressed to different MIDI channels, keyboard ranges, or even velocity levels. Various note priority modes (low, high, last) and polyphonic allocation schemes (voice-stealing, random, cyclic) allows you to fine-tune the CV/Gate conversion to your playing style. Each voice has a built-in digital LFO to interpret modulation wheel messages as a vibrato; can respond to pitch-bend messages; or can be smoothed with a glide/portamento control - no need for a dedicated module and patches to get the right response from a MIDI keyboard!

Each part can generate sequences either through an arpeggiator/euclidean sequencer combo; or with a SH-101 style sequencer with step-by-step recording, storing up to 64 notes. The module can sync to an external MIDI clock, and generate a clock/reset output at any subdivisions of the MIDI clock.

Other unique features include support for microtunings (either through standard MIDI message or from a selection of historical tunings or indian ragas), just intonation, and an "audio" mode which can transform one, two, or four of the CV outputs into simple digital oscillators.

Inputs/outputs and controls

  • 2-characters 14 segments display for parameter editing.
  • Clickable encoder.
  • Sequencer Record/Start-Stop/Tap tempo buttons.
  • 4 CV outputs.
  • 4 Gate/trigger outputs.

Technical characteristics

  • 8kHz CV refresh rate, 48kHz refresh rate in audio mode.
  • High-end 16-bit DAC and voltage references.
  • 12-points digital compensation curve to compensate for DAC non-linearities, and provide a much greater accuracy than the typical OFFSET/SCALE trimpots. A thorough factory calibration procedure makes Yarns extremely accurate.
  • Cortex-M3 ARM processor guaranteeing blazingly fast response to MIDI messages, even with a full stack of arpeggiators and sequencers running.
  • Open-source hardware and firmware.
  • Firmware updates through MIDI.


  • 60 mA +12V
  • 2 mA -12V
  • 0 mA 5V
  • 20 mm deep
  • Ø 4.40 (83 Votes) Average Rating

This Module is currently available.

$359 submitted Jul 12th 2013, 21:51 by pichenettes | last Change Mar 1st, 19:50 by pichenettes
Specs are approved by the manufacturer

Date Region Description Price Seller
EUThe overall condition of this *Mutable instruments Yarns* is *like new*. #...€180,00nuclearsound View
USAPerfect working order, only blemish is a minor rack rash at the screw holes. ...$230.00 View
USAYarns is a MIDI interface providing up to 4 channels of very accurate CV/Gate...$250.00 View
USAThis Yarns is used, but in great condition. A wonderful way to get midi into ...$300.00 View
JapanCondition is *as new*. Original box etc. I am the first owner. Used only at...¥29,000.00Parmesan View
EUThe overall condition of this *Mutable instruments Yarns* is *very good* ...€199,00Supervillain View
USAThe overall condition of this *Mutable instruments Yarns* is like new. ###...$300.00pendu View
EUThe overall condition of this *Mutable instruments Yarns* is *like new* ##...€200,00saylar1988 View
USAUnit with original box, manual, stickers, screws and toy. Barely used it. I d...$325.00 View
USAThe overall condition of this Mutable Yarns (factory build) is perfect workin...$275.00Hi55 View

23 Users are observing this

Buy Online

These merchants probably sell this module. Huh?


ControlDetroit ModularBig City MusicPerfect Circuit AudioAnalogue HavenControl VoltageThree Wave Music


TechnoSynth instrumentsMoog Audio


Clock Face Modular