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Amazon.com: CJP-Geek AC Adapter Compatible with Yamaha PSR-73 PSR-75 PSR-78 PSR-6 PSR-31 PSR-28 PSR-280 PSR-273 Portable Grand Keyboard Power Cord Supply : Musical Instruments
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Amazon.com: HQRP AC Adapter for Yamaha Psr-75 / Psr-76 / Psr-77 / Psr-78 / Psr-79 / Psr-8 / Psr-80 / Psr-82 Electronic Digital Piano Midi Keyboard [UL Listed] + HQRP Euro Plug Adapter : Electronics
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