Hi, Steven :
I second this wish function.
In my situation, I use external DAC(TEAC UD-503) to play music, as bit-perfect require 100% volume,
but from time to time, I just found the volume was at 9x%, it is because some time the mouse wheel was touched by some moment accidently.
A bottom or some kind of choose to fix volume at 100% will be very help to users who prefer "bit-perfect", including me.
Thanks very much for your effort, Steven!