The best of the bunch in that category is Positive Grid’s Spark series. Originally stemming from the 40-watt Spark practice amp, the line now includes the battery-powered Spark MINI and pocket ...

The Spark 40 raised the bar for practice amp functionality, then the Spark Mini dazzled us with rechargeable mobility. Now Positive Grid's newly revealed Spark GO. And it's really small.

Positive Grid delivers an invaluable tool for guitar practice with their new Spark Neo.

Positive Grid's Spark amp helps you learn and jam to your favorite songs The amp and its companion app meld tone modeling with mobile features.

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.

For more information about Spark GO, visit the Positive Grid website and get started playing with it today! To see our running list of the top 100 greatest rock stars of all time, click here.