As I’m not not that clued up with electrical wiring the bit I’m missing is how you actually wire the sound and led into the psu, I presume the led strip and sound bar are wired into a electric board first which has a power source to the extension lead?

I think I like the sound of using cut plexiglass for a flush finish and spray black the unused areas to hide the back. I think my monitor can take a wall bracket to hold in the cabinet.

Do you have an easy method to access under the controls?

I know this is a retropie forum so I’m not sure if there is a bartop forum you guys use. Apologies for so many questions.