

The app has lots of backing tracks built-in and they are laid out in a variety of musical styles.

The amp is designed to pair with the free Spark companion app for iOS / Android and connects via Bluetooth. Even though Spark is being primarily marketed as a practice amp, it's loud enough to keep up with a moderate volume living room jam or studio recording session. The back of the amp includes a 1/8th inch stereo auxiliary input where you can input music from a CD player or other source, as well as a USB out to connect to a DAW as a stereo two-track recording interface. You can also connect to the Spark app for access to over 10,000 more guitar and bass amp-and-effects presets from famous guitarists, session players, studio engineers and producers from around the world. Onboard, Spark includes seven switchable amp types ranging from clean to metal, as well as four user preset switches. With two custom-made, four-inch speakers and a subwoofer, Spark is designed to be used with electric and acoustic guitar and bass. It functions as a full-range, 40-Watt Class D combo amp with onboard EQ, effects and a built-in tuner, and includes a variety of tone-shaping options plus tone matched amps and effects built upon the company's award-winning BIAS engine. Po sitive Grid’s Spark guitar amp and app features intelligent technology that offers real-time Smart Jam accompaniment, Auto Chord detection and intuitive practice features for professional players and beginners alike.
