Acoustic instrument processor with a variety of effects. There are some minor scratches on the back, but it's in relatively good condition. Please consider it to be in "player's condition." Operation has been confirmed with both batteries and an AC adapter. An aftermarket AC adapter is included. Thank you. - Model Name: AD-3 - Function: Acoustic Instrument Processor - Effects: Chorus, Feedback Reduction - Controls: Reverb, Peak, Sharp, Rich, Soft - Switches: Anti-Feedback Auto, Chorus Thank you for viewing. Type: Acoustic Guitar Manufacturer: BOSS Also listed on other sites. Sorry if it sells out on another site before you can purchase it.