Zachary Vex of ZVex explains at #NAMM2017 the workings of his Candela VibroPhase — the world’s first candle-powered guitar effect. Yes, you read right. Candle-powered, with just a single tea candle sending its oomph to solar cells. Designed for fans of the 1800s, this steampunk Uni-Vibe creates sounds from subtle vibrato to Leslie-like phasing. And now, ZVex has launched a VibroPhase for the rest of us, powered by a 9-volt battery