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Amazon.com: JOYO Built-in 4400mAh Rechargeable Battery Guitar Effect Pedal Power Supply 8 Outputs 9V 12V 18V (100mA, 500mA) Jacks & 5V/1A USB Port (JP-05) : Musical Instruments
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Amazon.com: Vertex Effects Battery Power Supply for Guitar Pedals, Four 9V Outputs and One 9V Input, Guitar and Bass Pedal Power Accessory, 5" x 3.5" x 1.25" : Musical Instruments
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