Sample packs
A "pack" is the folder of audio that fills the eight sample voices. This chapter explains the PACK screen, what a pack actually contains, how packs interact with patterns, and the special status of pack 0.
What a pack is
The SD card holds up to 100 numbered pack folders. Each folder defines which audio file plays on each of the eight sample voices (channels 1–8) when you trigger a step. Switching packs replaces all eight voices in one motion — your pattern stays exactly the same, but the sound changes completely.
Only sample voices 1–8 are filled from a pack. Synth voices 11, 13, and 14 are generated, not played from files, so they stay the same across packs. Rows 9, 10, and 12 are empty — no voice is assigned there.
PACK — sample pack slots
Open PACK from the root menu. The screen is laid out like FILE: a number, a load icon, a save icon.
Pack screen — same family as FILE.
1 Encoder 1
| Short | Load pack | Reads the eight WAV files from the highlighted pack folder into RAM, replacing whatever was on the sample voices. Brightness of the number reflects whether the folder is populated. |
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2 Encoder 2
| Short | Save pack index | Persistently stores "this pack number is the default" so the same pack opens after the next power cycle. |
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4 Encoder 4
| Turn | Pack number (0–100) | Spins through pack folders. Existing packs are shown in bright green, empty slots in dim blue. |
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| Short | Back to grid | Leaves PACK without acting on the highlighted pack. |
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Switching packs replaces eight voices at once. Your pattern still references "voice rows", but the underlying audio files change. Save to
FILE first if you care about recall later — the pack swap by itself is not a backup.
Pack 0 — the scratchpad
Pack 0 is special. Whenever you load a single sample into a voice through the sample browser, the new mapping is written into pack 0 so it survives reboot even if you never explicitly save it. Treat pack 0 as your scratchpad: the place where one-off custom voice assignments accumulate.
If you build a sound you like in pack 0 and want to keep it long-term, copy the WAV files into a new numbered pack folder on the SD card from a computer — the firmware doesn't expose a "save as new pack" gesture from the device.
How packs live on the card
From a computer, the SD card looks like this:
samples/00/, samples/01/ … samples/100/ — one folder per pack number. Each folder holds the WAV files for sample voices 1 through 8 plus optional extras.patterns/001.dat, patterns/001.txt, … — pattern files and their sidecar text files (see Files).scheme.txt — colour palette state, written by the colour-scheme web tool.
You can edit, rename, and reorganise pack folders freely with the unit powered down. On the next boot the firmware re-indexes the card and your new layout shows up in PACK.
Conventions: the starter card uses pack folder numbers loosely by genre — low numbers for acoustic drums, mid-range for house/techno, higher for synth-only kits. Stick to the same naming when building new ones and the PACK screen becomes a quick set-list browser.