It’s easy, just turn the knob to cycle through your programs until Discord comes up on the little screen, and then push down to change it into a volume knob. If you need to change another volume ...

Teenage Engineering’s $1,199 TX-6 is a massively expensive field recorder that packs a ton of audio features and inputs into a tiny package. It also has some lovely controls.

Rather, Ford has leveraged the fact that the Mustang Mach-E's infotainment screen features a large, twisty knob to control the volume. But now, the knob will do double duty.