The Roland AC-33 is the world's first battery-powered amp made specifically for acoustic guitars, which provides a deep, rich stereo sound on the go. Portable yet powerful, the AC-33 provides true stereo sound which can be tailored to fit your exact specifications so you can find your voice. Guitar and Mic/Line channels allow for further expressive control, and when paired with the reverb and chorus effects, anti-feedback as well as the on-board phase looper - you'll find a truly unique sound which can be shaped and re-shaped time and time again. Made to go to places no amp has gone before, the AC-33 is loaded with both an AC power input and AA battery powered capabilities, meaning that wherever your musical journey takes you, this amplifier is right there by your side. What's more, none of the tone is sacrificed through the addition of this innovative feature, and you'll be sure to find a glorious amplified acoustic voice full of tonal depth and clarity.