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Amazon.com: MyVolts 9V Power Supply Adaptor Compatible with/Replacement for Casio CT-670 Keyboard - US Plug : Musical Instruments
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Amazon.com: HQRP AC Adapter/Power Supply for Casio CT-670 / CT670 / CT-680 / CT680 Keyboards Replacement [UL Listed] Plus HQRP Euro Plug Adapter : Musical Instruments
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