Les

FM-1 firmware · v0.1.1

saadet

A single-part polyphonic synth with four switchable engines after the Prophet, a six-operator FM, the CZ-1 and the Juno-106.

Made by
Kerem Kiliç
Released
October 27, 2026
Install
On GitHub
Scan
Scanned, nothing harmful found · Oct 31 What we checked
Last checked
October 31, 2026

What saadet does

  • Saadet makes the FM-1 one polyphonic synthesizer with four engines: P5, FM6, CZ-1 and J106.
  • The ALGORITHM knob moves between engines and the screen takes on each engine's colour.
  • The PRESETS knob browses the current engine's sounds, loading one when the knob rests.
  • Perform with the arpeggiator, HOLD, chords, strum, scales and microtonal tuning.
  • REC latches the notes you let go of until you play the next chord.
  • Store sounds in 384 shared user slots with favourites, and the current sound returns at power-on.
  • A browser editor mirrors the panel and backs up all sounds, favourites and settings.
  • Connect over USB MIDI, TRS MIDI input and Bluetooth MIDI, with stereo USB audio playback and capture.

Its modes

HOME
Shows the current sound, the chord you are playing and the scale, with K1 to K4 as the sound's four macros.
EDIT
Opens the selected engine's own panel of oscillators, operators and filter.
ENV
Sets envelopes and modulation.
LFO
Sets LFO modulation and the four-route matrix.
SEL (SCALE)
Chooses the scale and root note.
SEQ (CHORD)
Sets one-finger chords, voicing and strum.
ARP
Sets up the arpeggiator.
PLAY
Chooses voice mode, glide and unison.
SAVE
Picks a slot, spells a name with CURSOR and LETTER, and stars the sound.
LIBRARY
Browses favourites, your own sounds and every engine's factory sounds, with K2 to star one.

What Les checked

saadet v0.1.1Scanned October 31, 2026

What we checked for

  • The file is exactly the one its author published
  • It's the same file we saw when this release first came out
  • It opens cleanly as an FM-1 firmware, nothing damaged
  • It doesn't show up on your computer as a keyboard, mouse or other input device
  • It doesn't show up as a USB drive or network adapter
  • Its text mentions no computer command tools, like PowerShell, Terminal or a download command

What we found

  • MIDI and audio, as expected

StatusScanned, nothing harmful found

Les scans every firmware here whose file is public, and shows what it checked and what it found. A scan lowers the risk; it can't rule it out. This firmware is made by its author, not by Les or M-VAVE. Back up first, and install at your own risk. How Les scans firmware

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