PSS-7

Yamaha Portasound electronic musical keyboards were produced by the Yamaha Corporation during the 1980s and 1990s. The name suggests the instruments' portability, with battery operation being a consistent feature across the line. Many of these keyboards were designed for children with small keys and simple preset functions suitable for educational use. In 1982, the line introduced a card reader system which allowed players to learn and play along with sequenced songs. The PSS line features mini keys and the PSR line features full size keys. Some of the higher-end keyboards have advanced features like programmable synthesizer controls, MIDI capability, and sampler functions.