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Retro Piano / Keyboard Yamaha PortaSound Ps-3, Rare Analog sound filtered square waves - Catawiki
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Yamaha PortaSound PS-3 - Gearspace
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I was wondering if someone here knows what this is : r/synthesizers
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Pictures and images Yamaha PS3 - Audiofanzine
Yamaha PS-3 Review - YouTube
Yamaha PS-3 | Keen On Keys
