Powered amps for electric guitars have gotten some neat tricks powered by modern mobile tech over the years, but the new Positive Grid Spark ($299) might be the one that packs the most intelligence ...

While the rechargeable internal battery of the Spark Mini freed players up to choose where they wanted and needed to play, the GO takes that idea further. Because it's so small and ruggedly built with ...

Positive Grid has a new ultra-portable version of its high-tech Spark guitar amplifier. Designed for musicians seeking a versatile and powerful practice amp, the 3.5-inch-tall Spark Go works with a ...

Digital might be a four-letter word in the guitar world, but amp and effects emulation is nothing new; it's been around for some time and it's had a chance to get really good. Californian company ...