Over the past few years Ko'olau has been working along with some of the best professional luthiers out there. These instrument craftsman and artists were formerly building classical guitars. Ko'olau has taught them to make an amazing ukulele. Slowly, but consistently Ko'olau has improved the tone and feel of the Ponos'. The sound and feel of the Pono MB -(mahogany baritone) is a great example of that. Plus, it's made to last. It features only top notch solid woods, bone nut and saddle, high quality geared tuning keys, and a light weight, dual action, adjustable truss rod.