Checking Audio Output with Headphones Plugged in
Adjust the volume on your Chromebook
You can change your microphone, speaker, or other volume through quick settings.
Change your speaker volume
To control how loud or soft others sound to you, adjust your speaker, headphone, or other output volume.
At the bottom right, select the time
- Click the greater than symbol to the right of the volume slider
Tip: To mute the volume, select Volume 
.
- Make sure you do not have “Speaker (Internal)” selected
Tip: It may say "Line in" though it may say something else depending on audio device plugged in