U-Bass. The Solid Spruce Top Acoustic-Electric U-Bass features a Spruce top with Mahogany back and side. The black binding amplifies the contrast between the lighter Spruce and darker Mahogany. With the same thunderous low end the U-Bass is known for, the Spruce Top will appeal to any player. Scale Length: 20.375 inches, Overall Instrument Length: 29.375 inches, Body Length: 14 inches, Number of frets: 16, Width at upper bout: 7.75 inches, Width at lower bout: 10.25 inches, Width at waist: 6.625 inches, Body Depth: 3.25 inches, Fingerboard width at nut: 1.75 inches, Fingerboard width at neck/body joint: 2.213 inches. Preamp: Shadow U-Bass NFX. Gig Bag included. Finish: Natural Satin.