If you use KDE like I do - you may be interested in this article I found linked on Reddit - Volume Change Percentages in KDE. The idea there is that by default Kmix will increment volume changes by 4% when you use your keyboard - but it's possible to change that value. You just need to make a change to kmixrc. But you can go read it if you are interested.
So over at Reddit there were some comments like "Thanks for pointing this out." and one question "Any way to do the same with veromix?"
Let me confess that my first thought was - "This is about kmix stupid." But then I thought more about it and realized that it may not be stupid and so I started to dig. I got the source for veromix and it took me a little while to find it - but I did find the file and line where the value is set that drives this behavior. I was able to change it in my system and now I have a 2% increment (veromix is set to 5%) and that makes me pretty stinking happy.
I've emailed the veromix author because I think it wouldn't be too hard to add this value as one of the setting options. I think I've got most of the work done for it. I don't have time today to try it but I will soon. I think that would be pretty sweet.
Open Source - this is an example of why I love it so much.