To improve your audio quality, try these steps:
- Make sure your Chromecast Audio is plugged into the wall using the power supply included in your Chromecast Audio box.
- Make sure all connections are securely plugged in
- Unplug and replug the cords to verify a secure connection.
- Try enabling Full Dynamic Range.
- Put some distance between your Chromecast Audio and your audio system.
- Move the Chromecast Audio device as far away from the audio system that the cord will stretch.
- Try a different cable. Here's an overview of compatible cables.