Regarding the Item: - Model Name: CS-550 - Type: Stereo Chorus - Color: Blue - Power: DC 10V only - Country of Manufacture: Japan It's an older item, so there are some scratches and stains (?), but I believe it functions without issue. The 10V adapter is likely the original, but I cannot confirm. The items for sale are the main unit and the power adapter only. Regarding Price Negotiation: The price will be adjusted periodically based on the listing duration and viewing trends. I am unable to respond to individual price negotiations or requests to register desired prices (and will also omit replies to comments), so please understand.