Windows 7: Master volume does not control USB speakers

I connected a DAC to my laptop and set it as the default device from the control panel. Now the master volume mixer does not work at all.



When I change change the "master volume" slider - the others (WMP, firefox, etc...) apparently change with it too but there is no effect on the actual volume. But when I change each individual mixer it does.

How do I fix the master volume so that it works as normal? Any help is appreciated.

Hi nonyabus,
from control panel, select 'Sound' highlight speakers then 'Configure'

I did. Still the master volume slider doesn't do anything, but all the other ones work...



When I change the first one all the others *appear* to change with it, but there is no effect on the actual volume.

I use the volume switch on my speakers.

I'm using headphones... no volume knob.

If their not too expensive, buy a better set.

Are you serious... they're HD580s, and the DAC alone is 500$. Is there a real solution?