Matujuice Zoom MS ZDL effects pack
Firmware for Zoom MS-50G / MS-60B / MS-70CDR and G-series (Zoom)
Eleven free custom ZDL effects for Zoom MultiStomp pedals, aimed at synths and drum machines, with source: wavefolder, dual pitch shifter, pitch-tracked choir, Euclidean gate, dub siren, glitch, scrub and freeze, delay, pump, distortion and sweep.

- Distribution
- Prebuilt image you flash yourself
- License notes
- Copyright is shared with Roman Rusinov for the build toolchain and docs taken from ZoomMultistompZDL.
- Source
- github.com https://github.com/matujuice/zoom-ms-zdl-effects-pack
- fx
- wavefolder
- delay
- midi
- synth-engine
Description
The effects are loaded onto the pedal with Zoom's Effect Manager and are built from source with the free TI C6000 compiler on a linker toolchain taken from ZoomMultistompZDL. The tempo effects are written for the MIDISTOMP custom firmware, where they take tempo from MIDI clock, restart on MIDI Start and keep running after Stop; on stock firmware they run at 120 BPM. Release v1.5 keeps older builds with their own Tempo knob. Some effects listed in the README are on the main branch before a release. Tested on an MS-60B running MS-50G firmware; the MS-50G, MS-70CDR and other models are untested.
Install notes
Download a release, unzip it and load the .ZDL files with Zoom Effect Manager using Read Effects from folder. Effects with IDs in the 480 to 496 range can collide with other custom effects; the README explains how to change an ID and rebuild.
Version history
| Version | Date | Notes |
|---|---|---|
| v1.6 | 2026-10-08 | Tempo effects follow the custom firmware's tempo; SyncEQ removed. |
| v1.5 | 2026-10-08 | |
| v1.4 | 2026-10-05 | |
| v1.3 | 2026-10-05 | |
| v1.2 | 2026-10-05 | |
| v1.1 | 2026-10-03 | |
| v1.02 | 2026-10-02 | |
| v1.01 | 2026-10-01 | |
| v1.0.0 | 2026-10-01 |