Issue with volume level

I recently purchased a AMP 2.1 board for a project. I’ve set it up and been using it for the past few days and noticed something that that I think? is a bug.

The volume slider / level on the web UI does not represent the actual volume level.

Here’s how you can reproduce:

  • Select LINE IN as the audio source. Play any audio into the module.
  • Open up the web UI and set the volume slider to the far right / max level.
  • Rotate the volume knob to the right.
  • Observe that the volume gets louder.

You can see this by going in reverse, too.

  • Play audio to the LINE IN port
  • Observe the current volume
  • open the web UI and observe the volume slider
  • rotate the volume knob to the left / quieter direction
  • notice that the volume slider on the web UI does not also change.

Question: Is it intentional that the volume slider on the web UI does not “match” the actual volume of the audio out?