Back in 1985 the Sharp MR-990 (GR-990) had to be the ultimate Ghetto blaster with its unique pull out music composer. Sharp was gutsy in their boombox experimentation. The interface in the bottom center is a keyboard! If you’re an ’80s synthesizer enthusiast, look for one of these to make your collection complete. Thanks go to Rick in New Hampshire for providing a photo of this exotic piece.

More information can be found at the (very interesting site) pocketcalculator show. Below the image we have included an original Sharp brochure (in Korean it is…).

Make sure to browse through this original (Korean) brochure, the MR-990 seems to be a real studio-instrument.