Operation has been confirmed. The main unit, original box, and AC adapter are included. It was used a few times after purchase. There are no scratches or stains, and it is in beautiful condition. The adapter cord may have poor contact if bent excessively. Power is supplied when the wire on the housing is straightened. There is no problem with the main unit, and normal operation has been confirmed after replacing the adapter with a KORG volca series adapter (KA350) of the same specifications. It also operates normally on batteries.