YAMAHA's toy went berzerk! The PSS-680 MUSICSTATION - YouTube
This week it's the turn of the Yamaha PSS-680 to be put through its paces. Loads of great sound-design possibilities on this little FM synth. Full track... | By Alfonse | Facebook
Yamaha PSS 680 Music Station Programmable FM Synthesizer Keyboard | Reverb España
Yamaha Portasound PSS-680 FM keyboard - YouTube
PSS-680 - Yamaha PSS-680 - Audiofanzine
Jual BILLY MUSIK - Keyboard Yamaha PSS-680 PSS680 PSS 680 - Japan di lapak Billy Musik | Bukalapak