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 ($14.39)
Yamaha PSS-270 Synthesizer 1986 - Black ($79.74)
Yamaha Portasound PSS-390 80's Digital Synthesiser ($172.78)
Yamaha PSS-270 Synthesizer ($165.61)
Yamaha PSS-570 (1987, 2 op FM sounds, FM edit, PCM rhythms, great keys) ($107.31)
Yamaha PSS-270 Synthesizer ($120)
YAMAHA PSS-470, year 1987, FM sounds + EDIT, custom drummer ($107.31)
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