Presonus Eris Studio 5 C-Stock

Definitely C-Stock

Although the monitors seem to work as expected, one of them came covered in brown dust/dirt on its top. Even the inside of the bass port at the bottom was evenly layered with it, and not only just at its entrance, but all the way to the back of it (which is quite deep). It makes you wonder where it's been other than "in use for a few days for demonstration purposes". I'd expect even C-stock items to arrive moderately clean. The dirty monitor also didn't arrive with its manual or its 4 sticky pad feet to apply (the cleaner one did), but that's more excusable. After cleaning the monitor with a damp cloth and the inside of its bass port using a ruler to help reach the back of it, it looks just as decent as the other monitor. As for signs of use in terms of scratches or anything loose, I haven't noticed anything major or minor.