Features solid East Indian Rosewood is used for the back and sides The guitar is capped with a solid piece of select Sitka Spruce for bright, clean highs Description Product Description Since 1931, the Martin D-28 has remained the standard by which all other steel-strings are judged. Solid East Indian rosewood back and sides, solid spruce top, and Dreadnought size produce an incredibly loud, full, rich, punchy tone perfect for most musical styles. Used for years by all the top players, the D-28 is rightfully a living legend in acoustic guitars.