The Martin D-18 is a true icon in the world of acoustic guitars. First introduced in 1931, the D-18 has established itself as a mainstay in genres like folk, country, and bluegrass. With its solid Sitka spruce top and mahogany back and sides, it delivers a balanced tone characterized by warm bass and clear treble. Musicians love its playability and rugged construction, making it reliable for both studio sessions and live performances.