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Amazon.com: D'Addario Accessories PW-CT-9V DC Power Adapter – Minimize Need to Change Batteries on Pedalboard and Other Devices Requiring 9V – 500mA Max Current – Tip-Negative, Sleeve-Positive Power Supply , Black :
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9V DC Power Adapter (500mA Output, 120V AC Input, 2.1mm ID / 5.5mm OD) - Regulated - PI Manufacturing
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Amazon.com: UpBright AC to 9V DC Adapter Compatible with Bench Scales 9.0V 500mA 0.1A-1A Power Supply Cord Charger 120V to 9VDC 100mA 1000mA 5.5mm x 2.1mm Tip Center Positive 9 V Universal
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