You can pretty much build the Muffsy Phono Preamp into any enclosure you can imagine. These instructions will not cover all possibilities though.
The Muffsy Phono Preamp is designed to fit in a B0905 aluminum enclosure. Together with the Muffsy Power Supply and the Back Panel, you can build the complete phono stage with no drilling or modifications whatsoever.
The way I found the case was simply by searching for "0905 enclosure" on eBay. A couple of weeks later, this showed up:
These are the dimensions of my enclosure:
Notice that I have the holes in the screw terminals facing inwards, to make sure no cables are touching the cabinet walls. Now you can start sliding the two boards into the enclosure:
Slide the boards in all the way, and you will end up with the whole assembly looking more or less like this:
With the PCBs in place, just fasten the back panel:
Mount the top piece of the enclosure, and you've got yourself a phono stage: