Purchased late last year and used at home for audio synthesis from PCs and game consoles to speakers. It cost ¥14,999 on Amazon. It has been kept in a fixed position, so it hasn't been used often, and I think there are few scratches or stains. I will include the following: left and right connecting knobs (the transparent ones in the product photos) that I made myself with a 3D printer, and three analog x2 ↔ stereo conversion cables. I have discarded everything else shown in the images, so I will pack it in a box from a different product. You can view the manual on the official website, so please check there.