Bought this case to store my THR 10x, it is suitable for all THR models. It is padded for protection and has plenty of pockets for storing your power cords, USB cable etc. Appears to be somewhat water proof although I wouldn't recommend leaving it out in a downpour. Has a nice embroidered Yamaha logo and padded shoulder strap. If your buying a THR series amp I would recommend getting this case to protect your investment when not in use.