Managing Presets#

Where Presets Live#

Presets are stored in the browser's IndexedDB (web app) or in a local presets directory (desktop/plugin). They are exportable as plain JSON files for sharing or backup.

Loading a Preset#

1. Click the preset icon in the top bar to open the preset library.
2. Browse or search for a preset by name.
3. Scroll through the list or use the sidebar categories.
4. Click a preset to load it into the synth — it replaces the current settings.

Saving a Preset#

1. Adjust the synth controls to create your sound.
2. Click "Save preset" in the preset panel.
3. Enter a name for the preset.
4. Optionally add a category and tags for organization.
5. The preset is saved as JSON and appears in the library.

Preset File Format#

Presets use a versioned JSON schema (currently v1):

{
  "schemaVersion": 1,
  "params": {
    "lineSelect": "L1+L2",
    "modMode": "normal",
    "octave": 0,
    "volume": 0.8,
    "polyMode": "poly8",
    "legato": false,
    "portamento": {
      "enabled": false,
      "mode": "rate",
      "rate": 0.5,
      "time": 200
    },
    "line1": {
      "algo": "bend",
      "algo2": "fold",
      "algoBlend": 0.3,
      "baseWaveformA": "sine",
      "baseWaveformB": "sine",
      "window": "off",
      "dcaBase": 0.8,
      "dcwBase": 0.5,
      "modulation": 0.0,
      "detuneNote": 0,
      "detuneFine": 0,
      "octave": 0,
      "dcoEnv": {
        "steps": [
          { "level": 0, "rate": 5 },
          { "level": 100, "rate": 15 },
          { "level": 60, "rate": 20 },
          { "level": 60, "rate": 0 },
          { "level": 60, "rate": 0 },
          { "level": 60, "rate": 0 },
          { "level": 60, "rate": 0 },
          { "level": 60, "rate": 0 }
        ],
        "sustainStep": 3,
        "stepCount": 8,
        "loop": false
      },
      "dcwEnv": { "<dcw_steps>": "..." },
      "dcaEnv": { "<dca_steps>": "..." },
      "keyFollow": 0,
      "algoControlsA": [],
      "algoControlsB": []
    },
    "line2": { "<same structure as line1>" },
    "modMatrix": {
      "routes": [
        { "source": "lfo1", "destination": "pitch", "amount": 0.2, "enabled": true }
      ]
    },
    "fxSlots": [
      { "type": "reverb", "params": { "mix": 0.4, "space": 0.6, ... } },
      { "type": "empty" },
      ...
    ]
  }
}

Importing / Exporting Presets#

Export (Download)#

1. Open the preset library.
2. Hover over a saved preset and click the download icon.
3. The preset is saved as preset-name.json to your computer.

Import (Load from file)#

1. Open the preset library.
2. Click "Import preset".
3. Select a .json file.
4. The preset loads into the synth.

Drag & Drop#

You can also drag a .json preset file directly onto the browser window to import it.

Sharing Presets#

Preset JSON files are portable across all platforms:

• Web ↔ Desktop ↔ Plugin: A preset saved from the web app will load identically in the desktop or plugin version.
• Git / Version control: Preset JSON files diff well and can be stored in a Git repository.

Importing Casio CZ-101 SysEx#

See SysEx Import / Export for details on loading original CZ-101 patch dumps.

Organizing Presets#

Factory Presets#

The synth ships with a set of factory presets covering a range of classic and experimental sounds:

• Lead — Bright, cutting monophonic sounds
• Bass — Deep, punchy low-end
• Pad — Wide, evolving polyphonic textures
• FX — Experimental and textural patches

Tip: Use the factory presets as starting points. Load one, then tweak knobs to make it your own.

Next: SysEx Import / Export → | Previous: Effects →