Models
2 models
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Yamaha SY-1
Monophonic analog synthesizer
Japan
Yamaha's first synthesizer, a monophonic analog synthesizer released in 1974.
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Ace Tone Rhythm Ace FR-1
The preset rhythm box the whole category descends from
Drum machine · Japan
Ikutaro Kakehashi's Rhythm Ace played fixed patterns — bossa nova, waltz, march — from transistor circuits, with buttons you could press in combination. It was built to accompany organists, and it is the direct ancestor of everything below: Kakehashi founded Roland four years later.