USB Powered Speakers
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For power, plug the USB connector into anything that can provide USB power. If you keep the volume about half-way (which is still really loud), the current draw is 200-400mA. At max volume, you can end up with up to 1 A peak draw. If a computer is not available, one of our 5V 1A wall adapters will work well and if you want to power from a battery pack, you can use a USB A to 2.1mm adapter if you don't want to cut the cord.