Can I hear about what audio gear you're making?
I designed a Tube amp years ago (95+/-) and always wanted to build it in a nice buryl (sp?) wood front (ala mercedes dashboards).
Usually with things like that start as extrusions. You can tell the Lexicon started that way. They just machine it and anodize it. If you wanted to build something basic you could get a standard mill and bandsaw and pretty much be able to make anything. You can give it a brushed finish with a wirewheel (or polish it) and anodize it or powder coat it.
I'm assuming you're just making face plates.
Another feature to consider...adjustable green, blue & amber back-lights so you can make the lights match your other equipment. I always wanted to add that feature.