[tirpen]

The knob still exists as a physical thing between in your fingers. You can feel it turn, you feel how much you've turned it, you feel the little clicks if it has those, you feel if you turn it into an extreme position.

That's what tactile feedback is. It doesn't matter if the knob is connected to a digital or analog circuit. It has tactile feedback either way.

[seanmcdirmid]

You don’t get resistance when you turn the knob all the way up or down. You don’t get confirmation that the button you pressed did something. It’s tactile in the sense that they are physical, but otherwise not a great experience.