ems-octakit
Replaces the four Parts per Bank with 256 Kits per Project.
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- machines
- ui
Octatrack MKI / MKII
ElektronSamplers
8-track performance sampler
The Octatrack is a performance sampler and sequencer made by Elektron, first released in 2010 and later revised as the MKII. It has eight audio tracks, each able to hold two effects, plus eight MIDI tracks, a crossfader for morphing between scenes, and four audio inputs for live sampling. Audio runs on a DSP56300-family DSP with a ColdFire CPU, and samples load from a CompactFlash card into RAM or are streamed from it.
- Platform
- ColdFire + Motorola DSP56300
- Stock firmware
- 1.40C
- Manufacturer
- elektron.se
- Community
- Related
Notes
Every Octatrack mod patches a stock 1.40C OS file you supply yourself and leaves the bootloader untouched, so reflashing the official OS restores the unit ([FUNC] + power on, then [TRIG 3] per the OCTAMAX notes). No mod distributes Elektron firmware; images you build must not be shared. Most current projects (octabam, Octatrick, PassOS, midisc, Octaplay) are modules or forks of octabam and can be combined through it; Kyoti and ems-octakit have their own builders. Elektron does not permit sharing mod files or links on Elektronauts (policy of 2026-09-16); community discussion moved to elektronmods.com and modwerk.app.
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Firmware 8
midisc
MIDI scene locks (MIDISC2.1) for OS 1.40C, with midisc-patcher; rebuild from your own stock OS.
by bkkbrls-del
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- midi
- sequencer
midisc version history Version Date Notes MIDISC2.1 2026-10-08 Current revision named in the repository description; date is the last commit. 1.40MIDISC 2026-09-11 octabam
Modular "remixer" build that adds bus and per-track effects, an FM synth machine, 255 kits per project, USB audio and MIDI, and fixes for stock bugs.
by Sam Banks, Contributors credited per module
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- fx
- machines
- usb-audio
- usb-midi
- bugfixes
octabam version history Version Date Notes REC THRESHOLD (PR #687) 2026-10-13 Recorder trig that waits for input (THR, LEV, IN). Outbox 8 support (PR #597) 2026-10-05 Adds Outbox 8 expander support via USB audio clock SET_CUR handling. OCTABAM43 2026-09-21 Latest tag. OCTABAM38 2026-09-20 OCTAMAX
Reverse-engineering toolkit for the Octatrack MKII OS 1.40C plus opt-in behaviour patches (lazy part transitions, no bank/pattern countdown, arp scales, slice playhead, 256 static slots). Origin of the scene.
ActiveSource: openunspecified- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- research
- ui
- sequencer
- scales
OCTAMAX version history Version Date Notes dual256-v1 2026-09-05 Tag for the 256 static slots build. 2.0 BETA undated Adds SLICE PLAYHEAD view and persistent PERSONALIZE toggles. Beta, tested on one MKII. Octaplay
Octabam module that adds playhead modes to the sequencer - normal, reversed, two pingpongs, random and shuffle - shared by all tracks or set per track (T1-T8, M1-M8).
by devilfish707
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- sequencer
- performance
Octatrick
Four octabam-built additions for OS 1.40C: a two-operator FM synth machine with chords, a scale quantizer with glide, direct pattern jump and a tuner; also USB MIDI and 20-channel USB audio.
by Tim Hastie
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- synth-engine
- fm
- scales
- chords
- usb-audio
- usb-midi
- performance
Octatrick version history Version Date Notes MKI hardware-tested builds 2026-09-26 README states every build since this date runs on the author's MKI. OT Kyoti FW
Feature and bug-fix builds that keep the stock feel, with mute modes, direct pattern jump, a sidechain compressor with key input, repitch, project reload and batch fixes. Tested on an MKI.
by Zac Kyoti
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- fx
- sequencer
- performance
- ui
- bugfixes
OT Kyoti FW version history Version Date Notes KYOTI V1.3 2026-10-10 Combined image, hardware-confirmed; fixes the PLATE REVERB break in V1.2. Replaces V1.0 to V1.2. PassOS
Octatrack MK1 mod with 36 Digitone II scales across twelve roots on MIDI tracks and a STOP guard, on top of stock OS 1.40C. Nothing is placed on the DSP, so stock FX are untouched.
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
- scales
- midi
- sequencer
- performance
PassOS version history Version Date v1.0 2026-09-28
Tools 4
Modwerk
ToolModule SDK and web mod shop (formerly Octamod) built on octabam, for writing DSP56300 and ColdFire modules and assembling Octatrack firmware from them.
by repeat98
- Distribution
- Patches a stock file you supply
- Requires stock
- 1.40C
Brick risk. Flashing this carries a known, documented risk of damaging the device.
- sdk
- fx
- machines
- editor
octa-panel
ToolReal-time Octatrack emulator with sound and a virtual front panel in the browser, for developing and testing OS 1.40C mods before flashing. Built on octabam.
by Tim Hastie
- Distribution
- Build from source yourself
- Requires stock
- 1.40C
- emulator
- research
- sdk
octa-panel version history Version Date octatrick-2.9 2026-09-29 octamachine
ToolFeasibility research into porting the Machinedrum OS to Octatrack hardware as close to 1:1 as possible. Nothing boots yet; no flashable build.
by repeat98
ActiveSource: openunspecified- Distribution
- Build from source yourself
- research
octemu
ToolOctatrack emulator and development environment for firmware customizations.
- Distribution
- Build from source yourself
- Requires stock
- 1.40C
- emulator
- sdk