Yamaha PS-20 Automatic Bass Chord System | Reverb UK
YAMAHA PS-20 (sound and styles demonstration) - YouTube
Yamaha PS-30, PS-20
PS 20 - Yamaha PS 20 - Audiofanzine
This is a Yamaha PS-20 emulation. Perfect for that Beach House organ synth sort of vibe- made by a small company called Reverb Machine. : r/synthesizers