Martin Road Series OMC-13E John Mayer Signature Acoustic Guitar with Engelmann Spruce Top

John Mayer’s Martin story began in the early 2000s and grew into one of the most recognizable acoustic partnerships of his generation. The OMC-13E John Mayer brings that signature sound and style to the Road Series for the first time, making a John Mayer Signature Artist Edition available to more players. A solid Engelmann spruce top with aging toner—an especially exciting addition to a Road Series model—pairs with solid black walnut back and sides for a responsive, balanced voice with warmth, clarity, and rich acoustic character. Its comfortable OM cutaway body offers easier access to the higher frets, while the long 25.4" scale length, 1 11/16" nut width, and Performing Artist neck profile offer a smooth, familiar feel inspired by John’s preferred specs. Antique white binding, custom fingerboard inlay with John’s signature, and Martin E1 electronics complete a modern Mayer acoustic built for songwriting, performance, and finding your own voice.