The fastener choices are somewhat indicative, too. Drywall screws throughout, with the attendant plastic blow-out from incorrect head choice and over-tightening. Plus hex nuts as washers. Not that I've never done that before, but never for something 'nice'.
Cork sealing gaskets are kind of a waste when mounted from the wrong side. Wonder if there was a substitute for the seal around the back of the frame.
Bases are a hoot, too.
But how do they sound?