Boss analog delay, DM-2, MADE IN JAPAN, a later model made in Japan. According to the serial number, it was made in 1983. Operation has been confirmed with both an adapter and batteries. Although this model originally requires an ACA power supply, it has been modified to work with a PSA power supply, a standard power supply, and a standard 9V adapter. As it is an old item, there may be scratches and dents on the exterior. Naturally, it is not new, so please purchase only if you understand that it is a vintage, used item. Also, I had a very unpleasant experience recently where a product with no operational issues was returned, so I will not accept returns for any reason. Please understand this before purchasing. I am also selling this item elsewhere, so please forgive me if it sells out. Also, I would appreciate it if those who are slow with payment procedures and receiving notifications would refrain from trading with me.