Martin’s iconic bluegrass workhorse dreadnought guitar offers timeless looks and a sound that works in a variety of styles and genres. The HD-28 is built with a solid spruce top for tonal clarity. The forward-shifted X brace offers impressive volume and substantial bass. Solid East Indian rosewood back and sides add richness to the tone. Vintage-inspired appointments include aging toner on the top, open gear tuners, antique white binding, and Martin’s signature herringbone top purfling.