MATRIXSYNTH: Guru-600 1.0 – a free Prophet-600 firmware for the M-VAVE FM-1

Tuesday, November 10, 2026

Guru-600 1.0 – a free Prophet-600 firmware for the M-VAVE FM-1



via the developer:

"I've just released Guru-600 1.0, a free, open-source firmware (GPL-3.0) that turns the M-VAVE FM-1 into a Prophet-600 emulator. It is built on Felucca by Leo Kuroshita, and it has been tested on a real FM-1 and is fully working.

What it brings:

- a P600 sound engine built like the original: two oscillators per voice with sync, a 24 dB filter with its own envelope, Poly-Mod, LFO, unison, six voices

- 255 sounds: the Prophet-600's 100 factory programs under their real names, 100 free sounds from the Prophet-600 community and 55 made for Guru-600

- MORPH (gradually turn one sound into another) and MUTATE (a variation of a sound in one gesture)

- everything from Felucca: four tracks, thirteen other engines, 64-step sequencer, arpeggiator, songs, and two insert effects per track

- a web editor in 7 languages, with a panel inspired by the Prophet-600, tooltips and a complete backup of the FM-1

- a Mac app (Apple silicon) that runs the whole Guru-600 without the device

- a user guide (PDF) in 7 languages; older and newer FM-1 units supported

Install from the browser (Chrome or Edge): https://marcgoudy.github.io/guru-600/

Source, release and user guide: https://github.com/MarcGoudy/guru-600"

You can find the M-VAVE FM-1 on Amazon.

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