Positive Grid's tiny guitar amp is built for bedroom jam sessions
 

Positive Grid's Spark amp is helpful for practicing musicians, but its size and heft haven't been practical if you've wanted to jam in the bedroom or otherwise venture beyond your studio. Thankfully, the company now has a portable option. Positive has unveiled a Spark Mini amp that promises the digital functionality of its larger sibling in a much smaller (roughly six inches across) design you can carry wherever you want to play. The 10W device doubles as a Bluetooth speaker and supposedly delivers "punchy" bass through a downward-facing boost — there's even a swappable grille to personalize the look.

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