Roland MC-50 MkII MicroComposer, 1990-1991, made in Japan

Link: muzines | roland | Owner's Manual

Super MRC software/Super MRP performance in ROM
40,000-note internal capacity, 90,000-note DD floppy disk capacity
Smart FSK tape sync built-in - reads and writes Standard MIDI Files
Two independent MIDI outs with a total of 32 MIDI channels
Powerful and convenient editing functions, including microscope edit mode