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Expert Sleepers CVM-8 CV to MIDI/12C Convertor Eurorack Module


Functions: MIDI , Utility
Height: 3U
Width: 4hp
Out of stock
Availability: In Stock

The CVM-8 is an eight channel CV to MIDI and CV to I2C converter in a 4HP Eurorack module.

The CVM-8 digitizes control voltages on its inputs and uses them to generate MIDI or I2C messages, which can then be used to control other devices or software. For example, you could control a parameter on a hardware or software synth with a voltage (via a MIDI CC), or you could convert analogue CV/gate into MIDI notes in order to play a synthesizer from a Eurorack sequencer.

When used over I2C it can also work in a more passive mode, where the I2C leader queries the CVM-8 for its input voltages.

The CVM-8 has two completely independent sets of MIDI ports (a set being an input, an output, and a 'thru' connection), and one header for I2C connection. One of the MIDI outputs can also optionally drive the Select Bus.


Its two independent MIDI ports can be used with any MIDI device via 5 pin DIN or TRS 3.5mm jack breakouts, or connected directly to other Expert Sleepers modules via their MIDI breakout headers.

Compatible Expert Sleepers modules include the disting mk4, FH-2 and ES-9 (MIDI only) and the disting EX (MIDI and I2C). Compatible breakouts include the MIDI Breakout and the Tiny MIDI Breakout.

The CVM-8 also sends on the Select Bus, so no wiring is required to drive, for example, the disting EX.

A number of standard configurations can be selected using DIP switches on the PCB. Full configuration and firmware update is possible via a browser-based tool.

As an added bonus, the module provides I2C-to-MIDI functionality.

The CVM-8's specifications are as follows:

  • Panel width: 4HP
  • Module depth: 46mm
  • Current draw: 66mA on the +12V rail, 25mA on the -12V rail
  • Input voltage range: ±10.24V
  • ADC conversion: 16 bit
  • Two complete MIDI ports (in/out/through) for 5-pin DIN or TRS MIDI (via a compatible breakouts) or for direct connection to other Expert Sleepers modules
  • One header for an I2C bus connection to compatible devices
  • Connection to the Select Bus (as leader)


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Expert Sleepers CVM-8 CV to MIDI/12C Convertor Eurorack Module