The Yamaha PortaSound PC-100 is a quirky and charming vintage portable keyboard from the early 1980s. Sporting 44 mini keys, 10 built-in tones and rhythms, and Yamaha’s unique PlayCard system for loading songs and accompaniments, it was designed to be fun, portable and easy to play—whether on batteries or with mains power. Its built-in speaker, simple controls and classic FM-style sounds make it a nostalgic piece of gear that’s as entertaining to collect as it is to play.