No power cord.  It works well on batteries. 

The 1983 Yamaha PS-55 Keyboard Vintage is a classic keyboard synthesizer with 49 keys, perfect for creating unique and expressive music. This analog synthesizer, made in Japan, offers a variety of built-in effects and features such as speakers and an arpeggiator, making it a versatile tool for musicians and producers. With its vintage charm and reliable brand reputation, the Yamaha PS-55 Keyboard Vintage is a valuable addition to any collection of musical instruments and gear.