---
title: "loadPreset(at:)"
framework: avfaudio
role: symbol
role_heading: Instance Method
path: "avfaudio/avaudiounit/loadpreset(at:)"
---

# loadPreset(at:)

Loads an audio unit using a specified preset.

## Declaration

```swift
func loadPreset(at url: URL) throws
```

## Parameters

- `url`: The URL of an audio unit preset file.