I built this bass for my son Quinn who is 12 years old. He played cello last for a couple years and took right away to the bass. He bowed very well right from the start and took very well to the change in finger use. Here is the specs: The top is Englemann Spruce, the back is Big leaf Maple with some mild but interesting figuring. The sides are well figured maple and the neck is moderately flamed maple. It has French style individual tuners and the bridge is fitted with Boehm adjusters. Overall body length is 43 " Upper bout is 21" Center bout is 15" Lower bout is 25 1/2 It played well from the start with deep low end and nice upper register.