Thanks for the reply. Yes, I know automation shows plugin parameters, but they are, as you say, shown as percentages and you actually have to record automation first to see the values. I wanted to know if there's any way I can see the value movement when I simply turn the knob.
For example, this SpringBox I'm trying out now has a knob for HPF whose value is 20-2k. And, in the other DAW I use, if I turn the knob all the way to the left, the value in the small window in the DAW also moves and reaches "20," and if I turn the knob all the way to the right, it becomes "2000." So, I think the plugin is actually sending these accurate values to the DAW, and the DAW is reading and displaying them correctly. I think this feature (window to show the values) would be a nice addition to Sonar.