The PortaSound PS-1 was released at the same time as the PortaSound PS-2 and PortaSound PS-3 and is the low-end model of the line.
It's an analog keyboard that generates sound using filtered square waves.
Year Released: 1980
Keyboard: 32 mini keys
Polyphony: 8 notes
ROM: 4 sounds, 4 rhythms
Power Consumption: 6 watts
Dimensions: 43 cm x 14 cm x 6 cm
Weight: 1.2 kg
This keyboard has built-in 2-watt mono speaker(s).
Batteries: 6 x C
Yamaha PS-1 and PS-2 and PS-3 Manual
Vintage Yamaha PS-1 AC Power Adaptor Multi Voltage 220-240v 110-130v 80s ($61.06)
Yamaha P-S500B Digital Piano with L-300B Stand and LP-1B Triple Pedal - Black ($1,799.99)
Yamaha PSR-E373 Portable Electronic Keyboard 61 keys Pack 1 ($344.22)
Yamaha PSR E273 Digital Keyboard Pack 1 ($251.19)
Yamaha PSR 22, year 1987, FM sounds, FM edit, 1 USER rhythm ($73.42)
YAMAHA PSR-16, 1988, FM sounds, FM edit, 1 USER rhythm ($73.42)
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