RhIjazz raises a good point about some stepped attenuators (whether remotely controlled or not). I agree that ones with too few steps are not useful because the ideal volume almost always lies between steps. Those with 2 db steps are particularly annoying (one of my objections to transformer passives which necessarily are limited in the number of available steps).
But stepped attenuators, like those in BAT, Boulder, Levinson, VTL, etc. linestages, have enough finely graded steps to avoid these concerns. Some of these have steps that seem unnecessarily small (my Levinson No. 32 has .1 db steps), but, the small steps are more important for setting channel balance than volume. I have found that a .2 db change in channel balance is clearly audible, though a 1 db step in volume when playing music, is hard to hear. That is probably the reason for having such small increments in the better units with stepped volume controls.
But stepped attenuators, like those in BAT, Boulder, Levinson, VTL, etc. linestages, have enough finely graded steps to avoid these concerns. Some of these have steps that seem unnecessarily small (my Levinson No. 32 has .1 db steps), but, the small steps are more important for setting channel balance than volume. I have found that a .2 db change in channel balance is clearly audible, though a 1 db step in volume when playing music, is hard to hear. That is probably the reason for having such small increments in the better units with stepped volume controls.