New Vacuum Tube Monophonic Synthesizer – CHRT

MusikMesse 2018: The CHRT synthesizer is a true analog monophonic valve synthesizer.

Here’s an overview and demo, via Sonic State. The CHRT is designed primarily as a sound module for MIDI wind controllers, such as Yamaha WX5 or Akai EWI, but a  variation of firmware also lets it be used as a responsive sound module for a keyboard player.


  • ‘natural electric, real synth sound’
  • signal path is a pure thermionic valve circuit, digital circuits are used only for things like MIDI to CV
  • designed by a saxophonist, to allow for excellent control over dynamics, phrasing, articulation, accents
  • utilizes all MIDI data coming from the wind controller
  • no hum or noise issues

Pricing and Availability

The CHRT synthesizer is available as a kit for 400 Euro. Assembled options are also available.

3 thoughts on “New Vacuum Tube Monophonic Synthesizer – CHRT

  1. Wow, a real artisan at the Messe? What a great guy! Humble but building great things. Saxforum may get crazy about him!

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