This is a double-neck acoustic guitar. It has a preamp, and contact microphone-type pickups are installed under the 12-string and 6-string necks. I purchased it from a Chinese website. I'm a novice, so I don't know much about it. There are about two strings missing. There are tape marks. (I think they can be removed by wiping) Only a soft case is included. I'm sorry, but I won't be able to answer any questions, so please understand.