This Tweed Ukulele Amp from Kala is a great choice for playing and practicing anywhere! At less than five pounds, it's easy to take it on the go and jam whenever inspiration strikes. Power your amp with two 9v batteries, or plug it in with the included AC adapter. With controls for volume, treble and bass, an auxilary input for your phone or MP3 player, and an included headphone jack, you'll be able to play wherever the music takes you!