Les

FM-1 firmware · 1.0

FMEL-1

Mellotron tape sounds from a 1973 M400, flutes, strings and choirs, mixed in pairs and coloured with effects and lo-fi tape wear.

Made by
Antonio Altea
Released
October 19, 2026
Install
On the FM-1 Firmware Hub · source on GitHub
Scan
Scanned, nothing harmful found · Oct 31 What we checked
Last checked
October 31, 2026

What FMEL-1 does

  • You play real Mellotron tapes recorded from a 1973 Mellotron M400S, packed for the FM-1.
  • A fifth sound, PIANO, gives four looped keys of a Steinway B with a little drive, a gentle low-pass and slow pitch wobble.
  • Basic FX and lo-fi tape effects colour the tapes.
  • Two reverbs are on hand: HALL and PLATE.
  • A speaker EQ offers FLAT, LOWCUT and BASS+ settings.
  • SELECT works like a hand on the tape's reel.
  • The same code the FM-1 runs also plays in your browser as a simulator.

What Les checked

FMEL-1 v1.0Scanned 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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