Stereo WAV recorder/player from microSD. 60 banks × 10 samples, CV over pitch (1V/oct ±9oct), sample select, start, length, bank. Length knob sweeps loop → percussive envelope → grains.
Above 50% a short Fade In/Out envelope (0–39ms, adjustable) smooths loop points. Below 50% a percussive decay envelope is applied automatically; in Reverse it becomes an attack envelope. Below 1% the output is a single grain repeated — tame buzziness with higher Length or slow Length CV.
Above 50% Length, audio is stretched/shrunk so loop period stays constant regardless of Pitch. Below 50%, loop period tracks Pitch. Use the >50% zone for clock-locked loops you want to pitch-shift without re-syncing.
End Out fires a +8V pulse on every loop restart and on sample end. Patch to a sequencer clock input for a sample-synced master clock; patch to Reverse for ping-pong loops; split through a clock divider to reverse every N loops.
Default No: Pitch CV is continuous, suited to LFO scrubbing. Set Yes to snap Pitch CV to semitones for melodic playback from unquantized CV sources.
Not saved across power-down. While Reverse is held, Start Pos. knob sets channel output volume instead of start position and the Reverse button will not toggle direction. Returns to 100% on boot.
Play LED flashes red. Play button (or Play/Rec jack) starts/stops a recording into whatever bank+slot the Sample knob is pointing at when recording begins — changing Bank/Sample mid-record has no effect. 48kHz/16- or 24-bit stereo WAV written directly to SD. Hold Bank+Play+Reverse 3s to save slot assignments permanently.
Knob alone spans ±4 octaves, CV alone spans ±5. Combined range is clamped to -9/+4 octaves — positive CV plus CW knob can only reach +4, but negative CV plus CCW knob reaches -9. Bias for downward pitch sweeps.
Value 0–59 selects the bank loaded at power-on, encoded as color (ones digit) + blink count (tens digit). 15 = Cyan-1, 41 = Red-4. Sample list cache is rebuilt the first 3 seconds after each bank change — initial playback latency is ~0.7ms after that window.
On boot the module scans the SD root. Folders beginning with White, Red, Orange, Yellow, Green, Cyan, Blue, Magenta, Lavender, Pearl auto-load into the matching color bank. Collisions bump to the next blink level (Orange, Orange-1, Orange-2...). Sub-folders ignored — files must be root-level inside the color folder.
Default 8ms. Play/Rec trigger is delayed by this many ms so slew-lagged CV from sequencers has time to settle at Pitch and Start Pos. before playback fires. Reduce to 1 for snappy drum triggering; increase up to 20 for glide-heavy keyboards.
| Global | Pitch | Playback speed/pitch. Combines additively with Pitch CV. knob: ±4 oct · knob+CV clamped to -9 oct / +4 oct |
| Global | Sample | Selects one of 10 sample slots in the current bank. Play LED flickers to confirm new selection. 10 positions · Auto Stop On Sample Change: Yes (default) |
| Global | Start Pos. | Sets the playback start point as percentage of sample file. Shifts start and end together, keeping Length constant. 0–100% of file |
| Global | Length | Sets loop end / playback duration. Crosses three zones with different envelope behavior. 100%: full file · 50–99%: 200ms–5s, fade env · <50%: ~250–8ms, percussive env · <1%: ms-grain |
| Global | Play | Tap: start/retrigger. Hold 0.5s: toggle loop (LED blue=looping, green/yellow=not). Record mode: tap to start/stop recording. combos: +Bank (1s) stereo/mono · +Reverse (2s) enter/exit record |
| Global | Reverse | Toggles forward/backward playback. LED blue when reversing. Holds bank-nav and hidden-volume combos. combos: Reverse+Bank prev bank · Reverse+Start Pos volume · Reverse+Length fade time |
| Global | Bank | Tap: advance to next non-empty bank. Color + blink count encodes bank number (10 colors × 6 blink states = 60 banks). hold+Sample: pick color · hold+Length: pick blink count (Quick Bank Select) |