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Yamaha PSR-620 | Synthpedia
Amazon.com: 12V 2A AC Power Replacement Adapter for Yamaha Psr-330 Psr-340 Psr-350 Psr-3500 Keyboard Wall Charger Power Supply Cord : Musical Instruments
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This Yamaha PSR-620 cost about $500 back in the '90's. You can get something similar today for about $150. I still like playing it. But… | Yamaha, Canning, Piano
Yamaha PSR-620 Keyboard AC Adapter Replacement | eBay