30 watts (15W+15W) of natural, stereo acoustic sound through twin speakers Runs on AC power or eight AA batteries (accepts rechargeable NiMH types) Dual-channel configuration: Guitar and Mic/Line channel Reverb, chorus, and ambience effects (Ambience adds spatial, 3D-type depth to the sound) Phrase Looper with 40 seconds of record time Stereo AUX input (connect MP3/CD players, etc), headphone output Anti-feedback function Built-in tilt-back stand Removable battery cartridge for easy battery replacement.