StereoTool
Addon
StereoTool is a paid station addon. Activate it via Addons in the station sidebar.
Professional audio processing for broadcast-quality sound.

Overview
StereoTool is a third-party audio processor that provides advanced sound enhancement. It runs on the audio output before encoding, applying multiband compression, stereo enhancement, and other broadcast processing.
Requirements
- Active StereoTool addon (license managed through the addon system)
Interface
StereoTool is integrated as a web interface directly in the station. The processing page shows:
- Preset library: Browse and select presets in the sidebar
- StereoTool interface: Embedded web UI for detailed configuration
Activation
Processing is controlled through the preset mechanism:
- Open Sound Processing in the station sidebar
- Select a preset from the library
- Processing activates with the selected preset
To deactivate processing, deselect the active preset.
Processing Chain
StereoTool processes audio after loudness normalization but before encoding:
Audio → EBU R128 → StereoTool → EncoderTroubleshooting
No Audio Output
- Verify the active preset is valid
- Deactivate StereoTool to confirm source audio works
Distorted Audio
- The preset may be too aggressive for the source material
- Try a different preset designed for internet streaming
High CPU Usage
- StereoTool processing is CPU-intensive
- Consider using a lighter preset
- Contact support if issues persist
Related
- Addons Overview - Addon management
- EBU R128 - Loudness normalization
- Encoders - Streaming codec configuration