The PSS-9 uses PCM waveforms for sound generation.
Year Released: 1990
Keyboard: 32 mini keys
Polyphony: 8 notes
ROM: 100 sounds, 19 rhythms, 13 songs
Dimensions: 498 mm x 170 mm x 64 mm
Weight: 1.1 kg
This keyboard has built-in 0.6-watt mono speaker(s).
Batteries: AA x 6
Yamaha PSS-9 and PSS-16 Manual
Yamaha PortaSound PSS-9 Service Manual and PSS-9 B Service Manual [Three Wave Music] ($12)
Yamaha PSS-9 PortaSound Service Manual 1995 ($15)
Power Supply Replacement for YAMAHA PSS-9 KEYBOARD ADAPTER UK 12V ($11.78)
Yamaha PSS-460 PortaSound Synthesizer Keyboard ($102)
Yamaha PSS-270 Synthesizer 1986 with original box & manual ($242.86)
Yamaha PSS-270 Synthesizer ($120)
Yamaha PSS-470 Synthesizer ($122.04)
Yamaha PSS-460 FM Synthesizer Keyboard (SEGA, YM3812, 470) ($105)
Yamaha PSS-460 80s - Grey ($244.08)
Yamaha PSS-170 Synthesizer 1987 - Black ($75)
Yamaha PSS-270 Synthesizer 1986 with original box, manual & DC ($316.08)
Yamaha Portasound PSS 570 Vintage Synth 1980 - 1995 - Black ($140.13)
80s Yamaha PortaSound PSS-460 Grey/Green with Gigbag ($175)
Yamaha PSS-460 FM Synthesizer Keyboard ($30)
Yamaha Pss-460 80s ($80)
Yamaha PSS-270 Synthesizer Black ($135)
Yamaha PSS-270 Synthesizer year 1986, 2op FM synth + arranger ($80.74)
Yamaha PSS-470 Synthesizer 1987 - Black ($125)
Yamaha PSR 270 2015 ($247.50)
Yamaha-PSR 413 ($82)
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