Probably the most unusual of any incarnation of the Mega Drive was a variant that was built around an Aiwa CD player. Called the MegaCD Radio. The unit was made up of two components - an Aiwa bookshelf-size CD radio and a dock which added the Mega Drive connections (excepting sound, which the main radio unit handled.)

Oddly, Sega and Aiwa chose not to place the interface between the two on the sides that would connect, but instead opted to use a connection cable on the back. This Mega Drive variant is one of the rarest made, and only saw limited release in Japan.