EOS B200

Yamaha developed the EOS (Entertainment Operating System) as a beginner-oriented synthesizer.
The synthesizer features simple specs: a 4-operator FM tone generator with eight-part multi and eight-voice polyphony.
However, the novel design move of including speakers and the casting of noted music producer Tetsuya Komuro as the commercial spokesperson sent sales soaring, and the EOS Series has a strong fan base to this day.