Midi 2 CV



The Sound Study Modular Midi 2 CV is a 4hp USB MIDI to CV and Gate converter. It has a bunch of different modes that it can operate on, like monophonic, duo monophonic, and many more!


The Midi 2 CV is class-compliant but uses an unusual USB setting (1ms poll-rate in low-speed mode) not well supported on Windows.

Optimal latency is obtained with OS X >= 10.6.3 ; iOS ; or Linux >= 2.6.

On other systems, the Midi 2 CV will work but messages will be delayed by up to 8ms.

Conversion modes

  • Monophonic with velocity
  • Monophonic with velocity and square oscillator
  • Dual monophonic
  • Duophonic
  • CC conversion
  • Monophonic with CC
  • Quad triggers
  • Quad gates
  • Monophonic CVCVpalpalwith MIDI clock output

Technical characteristics

Range and standards:

  • CV outputs: 0 to 4V, V/Oct (4 octaves).
  • Gate outputs: Positive V-trig, ON = 5V ; OFF = 0V.


  • Resolution: < 2mV.
  • 8 points calibration curve for non-linearity compensation.
  • Temperature dependency: +/- 2 cents within the 10° C to 80° C range.
  • Output impedance: 220Ω (rule of thumb: 2 cents drop per connection to a CV input).

Power supply:

USB-bus powered, current draw < 20mA.

Important Information

The Sound Study Modular MIDI 2 CV is a clone of the Mutable Instruments CV PAL.  The CV Pal is an open source project licensed under the CC-BY-SA 3.0 license. If you are seeking support, have ANY questions, or need ANY assistance whatsoever with Sound Study Modular PCB’s, kits, or assembled modules, then DO NOT contact Mutable Instruments for any reason related to this product.  Sound Study Modular will assist with service, support and any other questions that you may have.  You can contact us at soundstudymodular@gmail.com

Download the MIDI 2 CV manual here (same as the CV PAL manual)

License Information

Code: GPL3.0.

Hardware: cc-by-sa-3.0

By: Olivier Gillet

All of the files and documents pertaining to the Midi 2 CV can be found on our github

Here is also a link to Olivier’s github page on the CVPAL

Information for re-use, adaptations or derivative works

Sound Study Modular (and Mutable Instruments) are trademarked, and should not be used on any of works you create from these files.

We ask that if you want to re-use all or part of the files provided on github that you change the name of the product to something else.