The Positive Grid Spark EDGE is a brilliant portable smart amp, PA system, and Bluetooth speaker for just about any garage ...

Forbes contributors publish independent expert analyses and insights. Technology journalist specializing in audio, computing and Apple Macs.

Positive Grid has launched Spark Edge, an all-in-one guitar amp and PA speaker that is compact, portable, feature-packed and might just have everything that the busking musician needs. The only thing ...

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