VINTAGE Yamaha PortaSound PSS-80 32 Mini-Key Keyboard Digital Synthesizer Tested

Yamaha PortaSound PSS 470 Keyboard Synthesizer

Yamaha PSS 125 Keyboard. Tested! Original Box Included. PSS-125

Vintage Casio CX-500 Keyboard Portable Mini Synth Tested As Is

Yamaha Portasound PSS-570 Programmable Keyboard Synthesizer PCM Tested Working

Yamaha PSS-F30 37 Key Portable Mini Keyboard Black Tested

Vintage Casio SK-1 Portable 32 Key Lo-Fi Sampling Keyboard with Box & Manual

Vintage Optimus Synthesizer MIDI Keyboard Concertmate 990 W/T Adapter See Pics