Keyboard YAMAHA Portasound PSS-680 from the 80s. - Catawiki
Vintage Yamaha PSS 680 2 Operator FM Portasound Synthesizer w MIDI Portable Battery Operated Synth | Reverb
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
Late 80's Yamaha PSS-680 5 Octave Mini Keyboard, Midi, Bend Wheel, Drums, 100 Voices | Reverb