If nothing else it looks like it has a significant electrolytic capacitor bank. The underside appears to be complex has a potential mix of newer and older elements. That said-
Given the complete lack of badging and the potential mix of the components I would go with a prototype or a very advanced DIY, It looks a bit too sophisticated to be a kit. There is more guessing in my statement then I usually care to make and would welcome being corrected. e.g. It's a Bottle head piece.