The Korg ToneWorks AX10A is a modeling/multi-effect unit for acoustic/electric-acoustic guitars. This is a listing for the unit only. There are no included accessories. It operates on a DC9V power adapter. Although I haven't used it, it is also designed to operate on 4 AA batteries. (Battery operation has not been confirmed) The manual can be found online. There is some aging on the unit. There is a crack in the battery case cover on the back. Otherwise, there are no major scratches or stains. Please check the condition in the photos. I believe the functions are working properly. I haven't used it much, so I haven't confirmed the operation of all functions. It has been stored in a smoke-free and pet-free environment. Below is the functional information from the web: Overview • The AX10A is a multi-effect/modeling processor that can transform acoustic/electric-acoustic guitars with piezo pickups into "natural acoustic sounds" and "a wide variety of acoustic sounds." • Korg's proprietary "REMS (Resonant structure and Electronic circuit Modeling System)" is used for the modeling technology. This allows for the "realistic" reproduction of the resonance of wood and the body, the feeling of air, and the sound of a guitar. Main Functions and Features ・Body/Mic Modeling • "Body" models: Recreates the body structure and resonance characteristics of famous acoustic guitars (dreadnought, classic/nylon string, resonator, etc.). Corrects the stiffness and lack of character of piezo outputs, resulting in a more "resonant" acoustic guitar sound. • "Mic" mode: Simulates the "airiness," "depth," and "three-dimensionality" of recording/PA with a condenser microphone. You can get a sound like a microphone recording even with direct input. • In addition to standard steel-string acoustic guitars, it can simulate a variety of guitar types such as "resonator guitar," "nylon-string guitar," and "steel-string acoustic guitar." Preset/Program Function • Equipped with a total of 80 programs (40 factory presets + 40 user-editable). Thank you for viewing. Thank you.