[blackshark v2 x] increase volume knob more than half, does the gain apply?

Hello, I was looking around for good headphones and accidentally heard the black shark headphones and bought them because the sound quality was better than I thought. (Fun of sound rather than resolution?)

But I'm curious about the function of the volume knob on the headphones.
Would the volume be 0-100?
If I turn up the volume more than half, will the gain be applied? (0 - 100 - 150?)
I think the volume control knob inside the headphones will not perform well, so I think it would be better to adjust the headphone amplifier's knob...