[Baeocystin]

And stop having bizarrely chunky steps between volume levels, too. It annoys me regularly that so many of my digital devices have less than a dozen steps between minimum and maximum, leaving me with either too quiet or too loud, and nothing in-between.

[mlyle]

Half a decibel per step is a reasonable chunk; average perceptible change is 1dB but sometimes it's better than that.

Figure maybe 65dB of useful dynamic range in a car + 10dB of range needed based on levels of the recording. That implies you want about 150 steps.

Go ahead and display a number between 1-30 if you want-- that's probably good for usability. I can find "13" and be close to what I typically want. Just, have the actual control surface move 5 steps per number so that I can fine tune.