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Amazon.com: Casio Inc. CTK4400 61-Key Touch Sensitive Personal Keyboard with Power Supply : Musical Instruments
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Amazon.com: UpBright 9.5V AC/DC Adapter Compatible with Casio CTK-2400 CTK-4400 CTK-2090 CTK2400 CTK4400 CTK2090 61-Key Portable Piano Keyboard DC9.5V 1.0A 1A 9.5VDC 1000mA Power Supply Cord Battery Charger PSU : Musical Instruments
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