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 and versatility into a single package. From a companion app, to voice commands, to tunable modeling and home recording — on top of doubling as a standalone Bluetooth speaker — the Spark offers features for beginners and pros alike.
The basics
The Positive Grid Spark looks physically like your average, portable practice amp. It’s just over a foot long and about half-a-foot wide and tall, and it weighs just under 12 lbs. There’s a removable leather carrying strap attached for moving it around, and it includes a 1/4″ guitar input, a 1/8″ auxiliary input and a 1/8″ headphone jack for connecting your audio gear, as well as a USB port for recording and acting as a USB audio interface for connecting to your computer.
The Spark has a host of integrated controls, including a dial for choosing from a number of preset amp types, as ..
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