Main unit, box, and instruction manual. Operation confirmed. Each input/output terminal and operation system confirmed. PC (Windows) connection is problem-free. *Missing three knobs on the front. If you don't need the box, I can offer a 250 yen discount. (In that case, it will be shipped via Yu-Packet Plus. The main unit will be wrapped in bubble wrap, packed with cushioning material, and sent with the instruction manual.) If you wish to purchase without the box, please be sure to comment "No box purchase desired" in the comment section before purchasing. Dust will be removed with a duster, wiped with a cloth, and the terminal parts will be cleaned before shipping. *Please note that the item may be sold out on other platforms.