The Yamaha PSS-270 PortaSound is an electronic instrument featuring built-in speakers, a voice bank indication panel, and rhythm sections. It supports power via six 1.5V batteries or optional adaptors (PA-1/PA-1B/PA-4 for household current, CA-1 for car battery). Users must remove the protective film from the Voice Bank panel before playing.
The manual details how to play back the pre-programmed demonstration music piece, "Just The Way You Are." To do so, turn on the power, adjust the Master Volume control about three-quarters of the way towards MAX, and press the Demonstration Start/Stop selector. The music plays automatically and repeatedly until stopped again.
| Battery Type | six 1.5V SUM-2, "C" size |
|---|---|
| Power Adaptor Model (Household) | PA-1/PA-1B/PA-4 |
| Power Adaptor Model (Car) | CA-1 |
The instrument includes the piece "Just The Way You Are".
Press the DEMONSTRATION START/STOP selector again.