Look on Etsy:
https://www.etsy.com/search?q=wood%20box%20for%20stereo%20component&ref=search_bar
Several wood enclosures available. Contact maker and ask for custom job.
Or, contact your local cabinet maker. This is easy woodworking. Depends a bit whether you just want a face plate, or a whole enclosure and whether it requires ventilation slits/grille. I would make my own, but sorry, not offering to make yours. Already have too many projects.

