Original Yamaha PS-2. This keyboard purchased in 1981 features 37 mini-keys and 5 tones, along with auto-accompaniment features.
Yamaha Portasound MK-100 Vintage 1983 49-Key Synthesizer Keyboard
YAMAHA PortaSound VSS 100 Keyboard Digital Voice Sampler & Synthesizer Tested
Yamaha Portasound PSS-130 Electronic Keyboard Musical Instrument Original Box
Yamaha Portasound PSS-30 Vintage Keyboard Electronic, Working
Yamaha Portasound PS-2 Keyboard Vintage Case, Power Cable and Instructions.
Yamaha Portasound PSS-570 Electronic Keyboard
