That bass has one magnetic pickup and a piezo bridge. I don't really know any details beyond that, though it does look like a 2-piece bridge/tailpiece arrangement. The photo (and description) is from the MTD site from a long time ago--I think he'd just switched over from using the "Eclipse" name, and was still trying out different approaches. When I talked to him about piezos a couple of years ago, he said he hadn't really found any that he liked the sound of, which is probably why you don't see more MTDs like that one.
Mike
Mike