The guitar, handcrafted by Gibson Acoustic in Bozeman, Montana, is built with a top made from prized solid Adirondack red spruce and back and sides of solid mahogany. This special edition model is enhanced by a 1930s advanced X-bracing pattern made with scalloped spruce braces to attain optimal acoustic resonance. Together these woods and construction techniques provide a blend of depth, clarity, richness and warmth along with the power and projection that made the Southern Jumbo famous.