This is the Zoom AC-2 acoustic guitar preamplifier. I purchased it used and used it a few times indoors, but I am selling it due to various circumstances. I think you could probably do a small live performance with just this one unit. There is a stain on the back that looks like rust, but it's difficult to remove. Other than that, there are no noticeable scratches, and I think it's in relatively good condition. Operation has been confirmed with both batteries and an AC adapter. This listing includes the main unit and the AC adapter. I will also include batteries for testing. Thank you. A multi-functional acoustic guitar effector with a built-in tuner. - Model Name: ACOUSTIC CREATOR AC-2 - Functions: Tuner, Reverb, Equalizer - Connectors: Guitar input, output, headphone jack - Power: DC 9V, USB connection - Features: Anti-feedback function, boost function Thank you for looking.