Eurorack Reference / modules /intellijel/multigrain audit site v0.1 — milestone 3
intellijel/multigrain

Multigrain

Intellijel

Live Stereo Morphing Granular Sampler with instant access to eight Sounds, played back through a granular engine with morphable scenes and a reverb effect called Blur.303

Capabilities 4

CV Recordercv-recorder
Two recorder workflows: Sample Recorder (record from inputs or resample outputs, up to 32sec, always-listening) and Looping Recorder (tape-loop style with auto-crossfade, 8/16/24/32sec length, supports live sounds). Advanced sample trimming and normalization available.303
Granular Samplergranular-sampler
Eight-channel stereo granular engine generates grain streams from up to 32-second stereo WAV samples or live audio input. Full control over grain position (START/SCAN/WRAP), size (20ms–4sec), pitch (±2 oct), shape (7 envelope types), level, and tone (2-pole HP/LP per grain).303
Pitch Quantizerpitch-quantizer
Per-sound 12-TET pitch quantizer with selectable scale, root note, and two quantization modes (PITCH knob + mod, or mod only). Can copy quantizer settings across Sounds.303
Reverbreverb
Built-in Blur reverb effect applied end-of-chain to all grain streams. BLUR knob simultaneously controls per-grain send amount and overall reverb decay. Also applied to audio passthrough when THRU is enabled.303

Jacks 15 — 11 in / 4 out

NameSignalVoltageDescription
Inputs (11)
GATEgate≥2V303
IN Laudio303
IN Raudio303
MORPHcv-10V to 10VCV input that modulates the position of the MORPH fader. ±5V sweeps the full MORPH range. MORPH ATT knob acts as attenuverter; fader acts as offset.303
NEXTtrigger≥2V303
SELECTcv-10V to 10VCV input that determines which Sound is playing. SOUNDs 1-8 mapped across 0V to 5V; negative voltage is rectified (mirrored). Empty Sounds are ignored.303
STARTcv303
SYNCclock≥2V303
Xcv-10V to 10VAssignable modulation CV input; ±5V sweeps any parameter range. Can be used for V/Oct pitch control of PITCH when assigned at 100% depth.303
Ycv-10V to 10V303
Zcv-10V to 10V303
Outputs (4)
AcvAssignable modulation output CV. Default: Morph fader position. Options: Morph position, Grain trigger, Grain envelope, Envelope follower (input), Envelope follower (output), Random S&H, Grain pitch, Record trig/gate, Threshold gate.303
BcvAssignable modulation output CV. Default: Grain trigger. Options same as A output: Morph position, Grain trigger, Grain envelope, Envelope follower (input/output), Random S&H, Grain pitch, Record trig/gate, Threshold gate.303
OUT Laudio303
OUT Raudio303

Parameters 22

NameTypeRangeBehavior
BLURknobControls reverb send amount per grain and the overall reverb decay simultaneously. Increasing CW increases both send and decay. If THRU is enabled, input is also sent through Blur at the same level as the playing Sound.303
Fine Tuneknob-7semitone – 7semitoneFine-tune pitch for the active Sound, ±7 semitones. Independent of the PITCH knob and not affected by Quantization. Available on Alt Page via the PITCH knob. LED is YELLOW if pitched up, PURPLE if pitched down, OFF if no fine-tune applied.303
GAINknob0.5 – 8.5303
Gate Delaymenu_setting0ms – 8ms303
LEVELknobSets the output volume of each grain. When RAND is applied in CCW direction, random modulation is applied with opposite polarity to left and right channels, creating a random panning stereo effect.303
LOADbuttonAlt Panel workflow button: opens the sample browser to load a sample from the microSD card into the current sound slot. Located on the Advanced Sampling Panel either side of the grey waveform icon, above the MOD label. Hold-on-boot displays one digit of the current firmware version via LED color.303
MORPH ATTknobAttenuverter for the MORPH CV input. Controls level and polarity of the incoming CV; MORPH fader acts as offset. ±5V at input with full positive attenuation sweeps the full MORPH range.303
MORPH faderfaderDetermines the Sound's parameters by interpolating between Scene A (fully left) and Scene B (fully right). Universal — position is what you hear regardless of which Scene is active for editing. REVERSE and SHAPE are discrete (probability-based morph). All grain parameters morph simultaneously.303
PITCHknob-2octave – 2octaveSets grain playback speed/pitch. ±2 octaves (±3 with modulation). Unquantized by default; can be linked to Quantizer. LED is GREEN at original pitch and octave intervals, RED otherwise, PURPLE when Quantizer enabled. Fine-tune (±7 semitones) available on Alt page.303
PROJECTbuttonAlt Panel workflow button: switches between projects on the microSD card (a project is the top-level container holding presets, scenes, and sample assignments). Located on the Advanced Sampling Panel either side of the grey waveform icon, above the MOD label. Hold-on-boot displays one digit of the current firmware version via LED color.303
RATEknob0Hz – 130.813HzSets frequency of grain generation from 0Hz (single grain on trigger) to 130.813Hz. Can be synced to external clock via SYNC input. When RATE–SIZE linked, RATE multiplies the base rate set by SIZE from 1x to 8x.303
RATE–SIZE LinkbuttonWhen linked, SIZE determines the base rate of grain generation (smaller size = faster rate). RATE then multiplies this base rate from 1x (fully CCW) to 8x (fully CW). Per-Sound, applies to both Scenes.303
REVERSEbuttonToggles playback direction of grain audio. Does not affect SHAPE or SCAN direction. Per-Scene setting. Long press activates Ping-Pong mode. When morphed between Scenes with different REVERSE states, morph position determines probability of each new grain using Scene A or Scene B value.303
SAMPLEbuttonAlt Panel workflow button: opens the Sample Recorder for capturing audio into a new sample. Located on the Advanced Sampling Panel either side of the grey waveform icon, above the MOD label. Hold-on-boot displays one digit of the current firmware version via LED color.303
SAVEbuttonAlt Panel workflow button: writes the current preset / project state to the microSD card. Located on the Advanced Sampling Panel either side of the grey waveform icon, above the MOD label. Hold-on-boot displays one digit of the current firmware version via LED color.303
SCANknobAdvances the start point of each successive grain through the area defined by START and WRAP. CW moves forward, CCW moves backward. Centered = static start position. Resets to START on SOUND press or GATE.303
SHAPEknobSelects the style of amplitude envelope applied to each grain from 7 options. SHAPE is a discrete value — morphing between Scenes determines the probability of each new grain using Scene A or Scene B value.303
SIZEknob20ms – 4000msSets grain length from 20ms to 4sec (centered ≈ 1sec). Maximum extendable to 8sec or full sample length via System Settings. When SIZE–PITCH linked, SIZE sets amount of audio content and grain length scales with PITCH playback speed.303
SIZE–PITCH LinkbuttonWhen linked, SIZE sets the amount of audio content per grain and PITCH adjusts playback speed while also scaling grain length to maintain the same audio content. Useful for changing pitch of a specific phrase while maintaining the audio content in the grain.303
STARTknobSets the start position in the sample from which grains are generated, ranging from the beginning to the end of the sample. Resets to START position when SOUND button is pressed or GATE received. With Live Sounds, fully CW processes the most recent audio in Live Memory.303
TONEknobControls a 2-pole HP/LP filter applied per grain. CCW applies lowpass, CW applies highpass, center applies no filtering. When RAND is applied CCW, stereo panning modulation is created by applying opposite polarity to L and R channels.303
WRAPknobDefines the area through which SCAN advances grain start positions. When SCAN reaches the WRAP position, the start position wraps back to START.303

Firmware history 5 versions

VersionReleasedNotes
1.4Added Choke and Gate per-Sound options; new Alt Page UI for Sound Options (Live/Choke/Gate); new MOD A/B output options (Threshold Gate, Record Trig); System Page additions (Grain Size Scaling, Gate Delay); independent THRSH settings for Looping Recorder and Sampler; increased max input gain to 8.5x; auto-fade improvements and grain engine optimizations.303
1.32025-10-03Added Collect and Save feature (3 modes: auto on preset save, manual per project, manual all projects); System Page additions (Extended Grain Lengths, Pitch Mod A/B Output Scale, 30sec Idle Timeout, Knob Pass-thru/Catch toggle); Set Default State for Sounds and Live Sounds separately.303
1.22025-07-01Added Live Sounds (generate grains from live input via Looping Recorder); Looping Recorder with CV-over-Freeze; Dry THRU bypass option; THRU lock; Grain Pitch MOD output option; RESET option for NEXT input; Random modulation source changed to Unipolar; System Settings Page introduced; Random RATE handling overhaul.303
1.1.0.02025-04-17Save 'Always Listening' memory without interrupting playback (long press sample button); CLEAR+SOUND 1-8 now 2-stage (clear settings then clear sample); Init Preset shortcut (CLEAR+LOAD); Preset Locking; Quantizer copy/paste across sounds; Quantizer edit all sounds; Randomizing a Sound now includes Link settings and Ping Pong.303
1.0Initial release.303

References 3

  1. [303]
    Intellijel Multigrain Manual v1.4 (2026.05.01)manual
    verified 2026-05-11
  2. [304]
    Multigrain Sample Guide (firmware 1.0 format)manual
    verified 2026-05-11
  3. [305]
    Intellijel Multigrain product pageproduct_page
    ⚠ verified 2026-05-11 · manufacturer changed since last verified