There are still some top notch players that don't use petals at all, Ronnie Earl comes to mind, I don't think this type of player will be switching to class D anytime soon.
GaN guitar amps?
With the success of GaN amps from the likes of @atmasphere and others, I was wondering if that technology could possibly infiltrate and possibly supplant guitar players’ beloved tube amps? Seems like a no brainer given reliability and weight savings in a pro-audio environment. Am I missing something here?