An observation about the volume control discussed in the several preceding posts; I found that adjusting the Windows volume control is the same as adjusting the "Analog 1 / Analog 2" sliders in the Light Harmonic Control Panel that was installed along with the drivers. That is, moving the Windows volume control to about 70% also moves the Analog 1 and 2 sliders to "-4." However, if you control the volume via the physical buttons on the Geek Out, this moves the "MASTER" slider in the Light Harmonic Control Panel. Which one is best? I have not done any A/B comparisons.
Also, adjusting Windows volume does not max out (or reset) the volume. I can restart the computer and the volume will stay where I left it. On the other hand, if I adjust the volume via the physical buttons or the "MASTER" slider, it will reset to max the next time I restart the computer.