I didn’t make it, but I had it made. Long story. (My previous case was homemade, and was 7U84.)
I am fond of 1U as a spice-rack in the middle - I sell 1U kits myself - and am interested in trying to do a few more things in that format than is customary. (90% of that row is made by myself - the commercial modules are at the left, and the rest is prototypes, three of which are inches from release. There’s also a 1U Plitka Trace oscilloscope in there. Functions going on in that row include clocking, an LFO, gate-to-trigger conversion, a couple of attenuverters, a headphone amp, a contact mic amp, a sample-and-hold with built-in noise source, and a slightly janky CV bus that needs work…