Thank you for viewing. This is an M's System skeleton speaker. I have confirmed it works with the AC power adapter, and it produces sound. There is no dedicated case. There are small scratches, marks, and dirt overall. The cork on the feet is damaged. The feet are the initial type. Since it's old, I don't know if the AC power adapter is the original one that came with it. The base of the AC power adapter is slightly detached. Please check the images and purchase with your understanding, as this item has been stored for a long time.