The rosewood used on Martins in the pre-war Golden Era is Brazilian rosewood, now only available in a precious, dwindling supply that existed before it became an endangered species. Nothing else has the three-dimensional depth to its visual beauty and to the expressive tonal landscape created by this, the holy grail of tonewoods. Martins made with Brazilian rosewood have a cavernous bottom end, rich with resonance without turning murky. The midrange and treble are pronounced with strong definition and tremendous depth, and the entire voice is illuminated throughout by transcendent overtones of unmatched refinement and multi-colored complexity. It really does have it all.