Is there a way to set the balance of the AMP permanent? I know it can be set with amixer or alsamixer, but that's setting the volumes for L and R, not the balance.
When I change the volume with the GUI (like Volumio) the balance gets equal again, ie. you're setting the volumes on both L and R the same.
How can I keep the balance of, let's say the left channel, at 10% more than the right channel, even when I change volume?