Found it while searching for a 33mm windscreen for my AKG C34. Couldn't find much info online, other than the brief user manual:
http://www.fullcompass.com/common/files/3612-MC833_BA_DE_01.pdfNot even on the BD website, though looks like Full Compass has a display model. Only links I've found for purchase are in Europe. Hmmm. Just curious if anyone's tried it...