On that first one, the knobs either need some spacing or background shading to group them logically. The little hexagons are just cluttering it up too. That’s not even getting into the knob size/spacing issue for finger use. But at least it’s not ugly.
As for the second one, I thought that font stopped being cool in 1986 (or alternately, when I was 14). It took a while to figure out that the middle jacks were min, max and mix and not some kind of abstract diagram. I feel like changing the font and aligning the jacks less haphazardly could move it a lot closer to acceptable.