Witness the Positive Grid Spark nail five of rock’s most iconic amp tones

You’d be hard pressed to name an amplifier that has made a bigger splash in the guitar world in recent years than Positive Grid’s Spark. Then again, Spark isn’t just an amp – at least not in the conventional sense.

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Richard Bienstock

Rich is the co-author of the best-selling Nöthin' But a Good Time: The Uncensored History of the '80s Hard Rock Explosion. He is also a recording and performing musician, and a former editor of Guitar World magazine and executive editor of Guitar Aficionado magazine. He has authored several additional books, among them Kurt Cobain: Montage of Heck, the companion to the documentary of the same name.