ADDAC Systems — ADDAC-112 Granular Looper
Certainly! Here’s a concise cheat sheet for the ADDAC112 VC Looper & Granular Processor Eurorack module, distilled from the manual you provided.
(Images attached above for visual reference, but here’s a written summary.)
ADDAC112 VC Looper & Granular Processor Cheat Sheet
Manual PDF:
ADDAC112 User's Guide PDF (source: addacsystem.com)
(Direct link to firmware, see addacsystem.com for updated docs.)
Module Overview
- Type: Stereo Looper, Granular Processor, & Real-time Sample Manipulator
- Sections: Looper Engine, Granular Engine, Output Mixer
- Power: 240mA @ +12V / 70mA @ -12V / 32HP+13HP / 4.5cm deep
Inputs / Outputs (I/O) Summary
Audio Inputs
| Jack Label |
Description |
Signal Level |
| IN 1 (Mono/L) |
Mono input (synth or line) |
10Vpp Synth, 2Vpp Line |
| IN 2 (Mono/R) |
Mono (normalled to IN 1 when unpatched) |
10Vpp Synth, 2Vpp Line |
| STEREO LINE IN |
Stereo, line-level input |
2Vpp Line |
Audio Outputs
| Jack Label |
Description |
| Left Output |
Master stereo (L) |
| Right Output |
Master stereo (R) |
| Mono Output |
Sum of L+R |
| INS MONO OUT |
Mixed input: all inputs summed to mono |
CV & Trigger Inputs (All CV in: ±5V range typical, 0-10V functional, see notes)
- All front panel knob parameters have dedicated CV inputs
- (Position, Deviation, Length, etc. – see controls list)
- Trigger Inputs:
- Playback and recording controls (NEW REC, REC, PLAY, STOP, FORWARD/REVERSE)
- Clock input (in 'Clocked Mode' via STOP jack)
Panel Controls Reference
Knobs & Sliders (Per section; each has CV in)
- Input Stage:
- INPUT GAIN
- Looper:
- LOOP VOLUME
- LOOP SELECT
- LOOP PITCH
- OVERDUB DECAY
- REC PROBABILITY
- REC DELAY (and DELAY DEVIATION)
- Granular:
- GRAINS ACTIVE
- POSITION
- POSITION DEVIATION
- PLAY LENGTH
- LENGTH DEVIATION
- GRAIN LOOP DELAY & DEVIATION
- GRAIN DIRECTION
- GRAIN PITCH
- VOLUME MIN / DEVIATION
- GRAIN PANNING
- ATTACK / DECAY (grain envelope)
- GRAINS VOLUME
-
GRAINS FEEDBACK
-
Output Mixer:
- DRY VOLUME
- LOOP VOLUME
- GRAINS VOLUME
Buttons (Looper Control)
- REC NEW – Start new loop (variable/fixed length)
- REC – Overdub current loop
- PLAY – Play/stop/retrigger loop
- STOP – Stop playback/recording or quantize triggers in 'Clocked' mode
- CLEAR – Clear loop (long press: erase from list)
- MENU Encoder – Enter/confirm menu navigation
Toggles & Switches
- RETRIG/PAUSE: Playhead triggers from start or toggles pause.
- SYNC REC/UNSYNC: Rec head follows or is independent from playhead.
- REC MODE: [STOP / LOOP / OVERDUB] - Determines end of rec behavior.
- FORWARD/REVERSE: Loop playback direction.
- REPEAT MODE: Grain repeat probability vs. number of repeats.
- SIZE DIVISION: [FREE/8/16] for granular quantization.
- Various Menu Options: (Quantize, Samplerate, Bit Depth, Pitch Tracking, Clocked Mode, etc.)
OLED Screen
- Shows: Looper state, Levels, Quantization, # Grains, Loop selection, Pitch, Panning, Envelope, etc.
- Info & Settings displayed via MENU
SD Card Handling
- Used for storing/loading Banks (presets/loops)
- Up to 99 presets & 99 loops per bank
- Max 30MB per bank
- Format: FAT16 recommended
- File structure:
/BANK[n]/WAV/*.wav
- Save current bank before power down to keep data!
- Loops as .WAV files, clean headers/no metadata recommended (use MediaHuman or similar if needed)
Voltage Control Reference
| CV Input |
Function |
Range |
| All parameter CV In |
Modulates panel |
0-10V* |
| Trigger In (REC, PLAY, etc.) |
Action |
Gate/Trig: >2V |
| CV Out? |
None (except INS MONO OUT - audio, not CV) |
|
| > * Typical Eurorack 0-10V. Not officially specified in manual, but common for ADDAC. |
|
|
Operating Steps (Quickstart)
- Audio In/Out: Patch input, set INPUT GAIN until LED indicates healthy level. Patch output.
- Create/Load Bank: MENU > BANK > NEW/LOAD.
- Record Loops:
- [NEW REC] to record, press [REC]/[PLAY]/[STOP] to finish.
- Select via [LOOP SELECT] or CV.
- Granular Processing: Engage grains with GRAINS VOLUME, adjust granular controls.
- Save: MENU > BANK > SAVE to SD before switching off.
- Navigate Presets/Loops: Use [PRESET SELECT]/[LOOP SELECT] knobs or CV.
Expert Features
- Quantized recording/playback & scales (chromatic, major, etc.)
- Menu controls: Sample rate, bit depth, mono/stereo, overdub origin (play/rec/both), pitch range, etc.
- Granular randomization/deviation via second knob per parameter
- Normalize loop volume: MENU + [REC]
- Duplicate loop: MENU + [NEW REC]
- Resize loop: MENU + [CLEAR BUFFER]
- Firmware update: via rear USB and Chrome browser DFU tool
For more in-depth reference, see the original manual!
Manual download:
ADDAC112 User's Guide PDF
Official ADDAC112 product page (for updates)
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