AUP10N The AU series has a very special construction. Instead of being made with a separate top, sides and bottom like most ukuleles, the AU body starts out as a solid wood block that is dug out, so the bottom and sides are made of a piece of wood. Then a top is added to complete the body. This construction method gives these instruments a unique sound and exceptional playability. In addition, they feature signature features such as the stereo soundport system, raised comfort armrest and rimless comfort heel.