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Amplifiers are an invaluable tool in this day and age. It’s a way to increase the power of a signal, power that the signal wouldn’t be able to achieve on its own. So, with an amplifier, you can make ...

This article was first published in the October 2015 issue of WIRED magazine. Be the first to read WIRED's articles in print before they're posted online, and get your hands on loads of additional ...