Instead of a body constructed from a top, back and sides, the Ibanez AU Series ukuleles feature a back and sides that have been carved from a single chunk of wood before being topped with a soundboard. In the case of the AUT10 tenor ukulele, the resonance chamber is formed by solid paulownia topped with a slice of spruce, resulting in rich sound that's enhanced by a surround sound-style effect thanks to a unique double sound port system. Meanwhile, the 15.75-inch radius of the okoume fretboard and the AUT profile of the purpleheart neck combine with a bevelled cutaway, Elevated Comfort armrest contour and Edgeless Comfort heel for superior playing comfort.