I bought this about six years ago after drinking too much and not remembering. I'm selling it because I've been transferred and haven't had a chance to use it. The condition of the product is that the battery compartment on the back is damaged and unusable, but it should work fine without using batteries. → I'm not sure if it can be connected to an amplifier. Rosin is not included. I remember buying it for around 60,000 yen at the time. Price negotiations are also possible, so please feel free to contact me.