YouTube Music Premium members can select the bitrate at which music is streamed and downloaded. If you haven’t selected a quality setting, it will automatically be set to the “Normal” bitrate for your location.
Select your streaming audio quality
Audio quality on Wi-Fi
- In the YouTube Music app , tap on your profile picture . 
- Select Settings Data saving Audio quality on Wi-Fi. 
- Select one of the available options:
- Low
          - Uses least data
- Upper bound of 48kbps AAC & OPUS
 
- Normal
          - Default setting
- Upper bound of 128kbps AAC & OPUS
 
- High
          - Uses extra data
- Upper bound of 256kbps AAC & OPUS
 
- Always High
          - Maintains high quality even when connection is poor
- Bitrate: 256kbps AAC & OPUS
 
Audio quality on mobile network
- In the YouTube Music app , tap on your profile picture . 
- Select Settings Data saving Audio quality on mobile network. 
- Select one of the available options:
- Low
        - Uses least data
- Upper bound of 48kbps AAC & OPUS
 
- Normal
        - Default setting
- Upper bound of 128kbps AAC & OPUS
 
- High
        - Uses extra data
- Upper bound of 256kbps AAC & OPUS
 
- Always High
        - Maintains high quality even when connection is poor
- Bitrate: 256kbps AAC & OPUS
 
Stream using Wi-Fi on mobile
If you're using YouTube Music on your mobile device, you can turn on the "Stream via Wi-Fi only" setting.
To turn on "Stream via Wi-Fi only":
- Tap on your profile picture . 
- Select Settings Data saving. 
- Turn on Stream via Wi-Fi only . 
Select your download audio quality
- In the YouTube Music app , tap on your profile picture . 
- Select Settings Download & storage. 
- Tap Audio quality.
- Select your download quality:
    - Low
        - Uses least storage on your device
- Bitrate: 48kbps AAC & OPUS
 
- Normal
        - Default setting
- Bitrate: 128kbps AAC & OPUS
 
- High
        - Higher-quality audio will use more storage on your device
- Bitrate: 256kbps AAC & OPUS
 
 
- Low
        
If you’ve previously downloaded songs, they'll stay at their current audio quality unless you re-download them. Changing the download audio quality only impacts the quality of future downloads.