The PortaSound PS-3 was released at the same time as the PortaSound PS-1 and PortaSound PS-2 and is the high-end model of the line.
It's an analog keyboard that generates sound using filtered square waves.
Year Released: 1980
Keyboard: 44 mini keys
Polyphony: 8 notes
ROM: 9 sounds, 4 rhythms
Power Consumption: 6 watts
Dimensions: 56 cm x 14 cm x 6 cm
Weight: 1.5 kg
This keyboard has built-in 2-watt mono speaker(s).
Batteries: 6 x C
User Demo Videos
WAV samples available on freewavesamples.com.
Yamaha PS-1 and PS-2 and PS-3 Manual
Items for Sale on Reverb
Yamaha PSR-3 39-Key 100-Voice Portable Electronic Keyboard ($74.99)
Yamaha Percussion Stand for DTXM12 ($119.99)
Yamaha PSS-11 PortaSound 32-Key Mini Keyboard ($70)