VOX VX50 AG Acoustic Guitar Amplifier *Adapter is KORG KA420. This item was purchased used. I have only used it once for playing since I bought it, but I am selling it because I have obtained another one and no longer need it. The adapter was not included when I purchased it used, so it is a new KORG KA420 (compatible) that I purchased. It was stored in a perfectly sized insulated bag (new purchase), which I will include. There were no problems with the operation or sound. Please understand that this is a used item and the inspection was done by an amateur. I plan to ship via Rakuraku Mercari Delivery. Thank you very much.