Jeff Feldman teaches beginning guitar lessons in San Francisco, specializing in helping kids and adults learn to play guitar, write songs, and have a blast. Visit ...

Positive Grid has rolled out Spark 2, the long-awaited sequel to its groundbreaking smart guitar amp, and it does not disappoint when it comes to digital features, with upgrades to be find right ...

The Spark 2 from Positive Grid looks like a miniature old-school amp, but it is, essentially, a computer with some knobs and a speaker. It has Bluetooth, USB-C, and an associated smartphone app. It ...

At this point, there are basically two kinds of guitar amps: old-school tube amps and modern digital amps that do their damnedest to recreate tube amps. The Positive Grid Spark is decidedly the latter ...