retro knobs and dials
There's nothing "retro" in knobs and dials (and buttons). They are just more expensive than a touchscreen, which is useful only as long as you look at it, and has no physical feedback.
One of the thing you get to appreciate of a real pro device, it's it enables you to perform your task while concentrating on it, and not the UI needed to achieve it. We have some other senses beyond view, and sometimes taking advantage of tactile feedback is truly welcome.