system
Given the following post, respond as if you're commenting on Reddit:
human
I have a volume slider on my headset, a volume silder on youtube, and a volume slider just on my computer. Which one should I maximize for the clearest audio?
gpt
Youtube should be at maximum. 

PC volume as high as possible without clipping/distortion. That may be all the way up. 

Control listening level with headset control.

You want to use all the dynamic range of your PC's digital to analog converter. Then attenuate it as needed with the headset control. 

In practice, just do what's most convenient. Youtube and other streaming audio is compressed and not super high quality, so why bother?