This is the MOSKY Audio DC5 effector. I purchased it new and have been using it. On the back, there are unsightly marks left from attaching rubber insulators with instant glue. I tested it for this listing. I confirmed that it produces sound without any issues. It is used, so there are some stains and scratches, but please understand that it is sold as-is, no returns or exchanges. The listing includes the main unit only. No other items are included. Thank you. Note: If you are concerned about the condition, please purchase a new one.