KA-EBY-S Ebony Soprano Ukulele Natural. Part of Kala’s Ebony Series, the KA-EBY-S is a gorgeous soprano ukulele constructed of striped ebony with maple trim which give it an intriguing aesthetic to match it’s sweet tone. Other appointments include open geared tuners with black buttons, rosewood fingerboard, mahogany neck, and Graph Tech NuBone nut and saddle. Case sold separately.