---
title: AudioVariant.highResolutionLossless
framework: musickit
role: symbol
role_heading: Case
path: musickit/audiovariant/highresolutionlossless
---

# AudioVariant.highResolutionLossless

Hi-Res Lossless uses Apple Lossless Audio Codec (ALAC) for bit-for-bit accuracy up to 24-bit/192 kHz.

## Declaration

```swift
case highResolutionLossless
```