O-DigiDelay User Guide
Warm analog-style delay with stereo spread and modulation
Getting Started
Quick Start
- Download the installer from your Ouaricon Audio account
- Run the installer — it installs both VST3 and AU formats automatically
- Open your DAW and scan for new plugins
- Insert O-DigiDelay on a track
- Enter your license key (OUA-XXXX-XXXX-XXXX) when prompted
System Requirements
| Platform | Details |
|---|---|
| macOS | macOS 10.13+ (Intel and Apple Silicon native) |
| Windows | Windows 10+ (64-bit) |
| RAM | 4 GB minimum, 8 GB recommended |
| Formats | VST3, AU |
| DAW | Any VST3/AU-compatible host |
Installation Paths
macOS:
- VST3:
~/Library/Audio/Plug-Ins/VST3/O-DigiDelay.vst3 - AU:
~/Library/Audio/Plug-Ins/Components/O-DigiDelay.component
Windows:
- VST3:
C:\Program Files\Common Files\VST3\O-DigiDelay.vst3
Interface Overview
O-DigiDelay features a wide-format interface with seven primary controls, a preset browser, and an output level meter.
Layout
The interface is organized as follows:
- Top Left: Plugin title (Ouaricon Digital Delay)
- Top Right: Preset browser with left/right arrows, preset name, LOAD and SAVE buttons
- Left Column: SYNC toggle (OFF/ON) for tempo synchronization
- Center Row: Six rotary knobs — TIME, FEEDBACK, SPREAD, MOD, WET, DRY
- Right Edge: OUT level meter showing output signal
All parameters can be automated in your DAW for dynamic delay effects.
Parameters
| Parameter | Range | Default | Description |
|---|---|---|---|
| Sync | OFF / ON | OFF | Locks delay time to your DAW's tempo. When ON, the Time knob snaps to musical note divisions. |
| Time | 1–2000 ms (free mode) Note values (synced mode) |
351 ms | Sets the delay time. In free mode, displays milliseconds. When Sync is ON, displays musical divisions (1/4, 1/8, dotted, triplet, etc.). |
| Feedback | 0–100% | 50% | Controls how much of the delayed signal feeds back into the delay line. Higher values produce more repeats. At 100%, repeats sustain indefinitely. |
| Spread | 0–100% | 40% | Stereo width of the delay. At 0%, delay is mono-centered. At 100%, repeats alternate fully between left and right channels (ping-pong behavior). |
| Mod | 0–100% | 5% | Applies pitch modulation to the delay line, simulating tape flutter and analog imperfection. Subtle amounts add warmth; higher values create chorus-like movement. |
| Wet | 0–100% | 45% | Level of the delayed (wet) signal in the output mix. |
| Dry | 0–100% | 90% | Level of the original (dry) signal in the output mix. Set to 0% when using on a send/return bus. |
Parameter Details
Sync
The Sync toggle switches the Time knob between free-running milliseconds and tempo-locked musical divisions. When enabled, the delay stays in time with your project regardless of tempo changes, making it ideal for rhythmic delays.
Feedback
Feedback determines the number of delay repeats. Low values (10–30%) give a subtle slapback effect. Medium values (40–60%) produce a natural trailing delay. High values (70–90%) create long, building echoes. At 100%, the delay self-oscillates — use with care for creative sound design.
Spread
Spread controls stereo distribution of the delay repeats. At low values, repeats stay centered. As you increase Spread, odd-numbered repeats shift left and even-numbered repeats shift right, creating a ping-pong effect. This is great for adding width and movement to mono sources.
Mod (Modulation)
The Mod control applies subtle pitch modulation to the delay buffer, simulating the mechanical imperfections of analog tape and bucket-brigade delay circuits. A small amount (3–10%) adds warmth and organic character. Higher values (30%+) create noticeable pitch wobble suitable for lo-fi and experimental textures.
Wet / Dry
Independent Wet and Dry controls give you full flexibility over the mix balance. For insert use, keep Dry at 80–100% and adjust Wet to taste. For send/return routing, set Dry to 0% and Wet to 100% so your DAW's send level controls the effect amount.
Presets
O-DigiDelay includes factory presets covering common delay applications. Use the left/right arrows in the preset browser to browse, or click the preset name to open a dropdown.
| Preset | Description |
|---|---|
| Default | Balanced starting point — moderate time, feedback, and spread |
| Ping Pong Style | Full stereo bounce with wide spread and moderate feedback |
| Long Ambient | Long delay time with high feedback and modulation for atmospheric tails |
| Slapback | Short, single repeat for classic rockabilly and vocal doubling |
| Tape Echo | Warm repeats with high modulation simulating vintage tape delay |
| Dotted Eighth | Tempo-synced dotted 1/8 note — classic U2-style rhythmic delay |
| Dark Repeats | Filtered delay with gentle rolloff for warm, receding echoes |
| Wide Stereo | Maximum spread with moderate feedback for immersive stereo field |
| Lo-Fi Wobble | Heavy modulation for warped, degraded tape character |
| Subtle Thickener | Short delay, low feedback — adds body without obvious echo |
Managing Presets
Use the SAVE button to store your own presets. Use LOAD to browse and import preset files.
Presets are stored at:
macOS: ~/Library/Application Support/O-DigiDelay/Presets/
Windows: %APPDATA%\O-DigiDelay\Presets\
You can create custom presets and share them by copying preset files to this directory.
Troubleshooting
Plugin Not Appearing in DAW
- Rescan your plugin directories in your DAW's preferences
- Verify the plugin is installed at the correct path (see Installation Paths above)
- On macOS, check that Gatekeeper hasn't blocked the plugin (System Settings → Security & Privacy)
- Restart your DAW after installation
No Delay Effect / No Repeats
- Check that Wet is greater than 0%
- Verify Feedback is above 0% for audible repeats
- Ensure audio is passing through your track (check DAW meters)
- Try the Ping Pong Style preset to verify the effect is working
Tempo Sync Not Working
- Ensure Sync toggle is ON
- Verify your DAW's transport is playing (some DAWs don't send tempo when stopped)
- Check that your DAW project has a valid tempo set
Delay Sounds Muddy or Builds Up
- Reduce Feedback — values above 70% produce many repeats that can accumulate
- Lower Wet level relative to Dry
- Reduce Mod if the delay sounds too washy or pitch-shifted
License Activation Issues
- Check your internet connection
- Verify the license key format is correct:
OUA-XXXX-XXXX-XXXX - Ensure you haven't exceeded the 3-machine activation limit
- Contact [email protected] if problems persist
High CPU Usage
- O-DigiDelay is optimized and should use minimal CPU (typically <1%)
- If you experience high CPU, check your DAW's buffer size settings
- Close other resource-intensive plugins on the same track