The Aiwa Mega CD, is a Japanese CD player which can also play Sega Mega Drive and Mega CD games.
The unit is made up of two components – an Aiwa bookshelf-size CD radio and a dock which added the Mega Drive connections. This is one of the rarest Mega Drive systems, and only saw limited release in Japan in 1994.
The controller (which is this nifty blue affair) is pretty awesome by itself.