TEST BUILD 28 — SLOOP 2.5 + the owner's additions (branch majid). Built 2026-10-09 from commit c741193. New in 28: DX7 voices play as the patch is, as upstream SLOOP plays a DX7 cartridge voice and M-VAVE's firmware plays its own — dry and with no level trim, each voice as loud as its programmer made it (build 26's per-voice level matching is gone: it judged a voice by its name and pushed some, like PIANO 6, far too loud). Kept: every voice in banks 5–12 shows its own name (25), KEY VELOCITY (HOME menu → SYSTEM, KNOB 3: 60–127, default 100) and dry picks (27). Everything of upstream SLOOP 2.5, plus twelve banks of DX7 voices by name, the jump by kind and FX → KEEP. Installing over builds 19–27 erases nothing; no bank needs reloading. The FM-1 shows 2.5-B28 BETA under HOME menu → SYSTEM → ABOUT. Not a SLOOP release. USR4 holds 32 KiB on this build. To go back, install SLOOP 2.5 from its own page — but save a backup in the editor first: upstream does not keep this build's record of which banks it has claimed, and coming back here after it has saved its settings can erase banks 1–8 at the first start (1–4 refill themselves, 5–8 come back only from the backup).

Firmware for the M-VAVE FM-1

A groovebox you play live: four tracks — three synths and a drum machine — 12 synth engines (with six-operator FM and DX7 patches), 153 sounds, 37 drum kits from 808 to techno, amapiano and ambient, your own samples and drum kits, 16 punch-in effects. House, techno, hip-hop, drum & bass, synthwave, lo-fi, ambient: make what you want. No factory patterns, nothing to load: everything you hear, you play.

153sounds, 12 engines, your samples
37drum kits, 909 to afro, + your own
16punch-in fx: hold fx + key
recno click: the loop follows you


  
  

  

  

  

    FM-1-transporter

  

    
    

    
www.m-vave.com/download

    

    

    

    

    

    

  

  
SLOOP is based on Felucca by Leo Kuroshita (@kurogedelic), Hügelton Instruments.
    Hold OCT− alone while switching on for USB rescue.

    Font: Terminus (Dimitar Toshkov Zhekov, SIL OFL 1.1). Samples: Versilian Studios VSCO-2 Community Edition and VCSL (CC0 1.0), and the Hügelton Sample Pack (© Hügelton Instruments, not CC0).

    M-VAVE and FM-1 are trademarks of their respective owners; SLOOP is not affiliated with them.

     github.com/hugelton/Felucca