SP-404MKII

Loud84/100

6 open-source firmware projects for the Roland SP-404MKII, from 6 creators. Most starred: doom-os, SparkyMK2, and tallfree. Latest release November 2026.

Firmware: 6
Creators: 6
Latest release: 17h ago
Followers: 0

Models in SP-404

Commits

Releases

312 commits and 23 releases in the last year

Activity · last 12 months

Community 0

Start the first thread →

Firmware 6

All Firmware Mod Tool

Grid Table

Hot: most recent activity first

doom-osv0.7.3-733D

SP-404MKII@klangfeld-labs17h

The Official DOOM OS repository

0 0 182

doom-os-midi-conductor

SP-404MKII@danielmcc12316h

Browser patcher and guide for the MIDI Conductor, a DOOM OS add-on that lets the SP-404MKII control external synths over DIN MIDI.

0 0 8

dm-404v0.1.5

SP-404MKII@nickpetty2w

An SP-404MKII emulator: Roland's own firmware (bring your own) on an emulated i.MX RT1060 in QEMU, with a hardware-style app and a DAW plugin

0 0 7

open404v0.1.1

SP-404MKII@iare-digital1mo

An open-source, cross-platform Go library, toolkit, and CLI for the **Roland SP-404MKII** creative sampler and effector.

0 0 0

tallfree2026.10.06

SP-404MKII@Mudb0y4w

Talking custom firmware for the Roland SP-404MKII

0 0 8

SparkyMK2v0.7.3

SP-404MKII@TuscanPL1mo

Feature matched cross-platform app for the Roland SP404-MKII

0 0 15