MATRIXSYNTH: Kraftor Performer: custom MIDI control with SpeakJet

Friday, October 16, 2026

Kraftor Performer: custom MIDI control with SpeakJet


video upload by Polaxis

"A custom MIDI controller driving Kraftor with a SpeakJet voice board.

This is one example of the Kraftor Performer approach: complete instruments and custom controllers designed together around your way of playing. Controls can be integrated into the instrument or housed separately and connected through 3.5 mm TRS MIDI Type B.

Custom builds:
https://www.polaxis.be/product/krafto...

Kraftor:
https://www.polaxis.be/product/kraftor/

SpeakJet firmware and information:
https://www.polaxis.be/kraftor-speakj...

#SpeakJet #Kraftor #Polaxis"


"Kraftor Performer is a family of custom speech instruments and MIDI controllers developed with each customer for performance, installations and experimental sound. The voice engine, controls, display, connections and enclosure are chosen for your project.

Choose an integrated instrument or a separate controller connected to Kraftor through 3.5 mm TRS MIDI Type B. The photographs show example builds; your instrument can take a different form.

Built to order. Price on request.
Pricing and lead time are agreed once the design and scope are defined."

Additional designed pictured below.

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