Martin Super D-18 Dreadnought Acoustic Guitar - Aging Toner

When a standard dreadnought no longer feels big enough, the Martin Super D-18 answers with scale, authority and headroom to spare. Built around Martin’s largest acoustic body size to date, it delivers unprecedented power and depth with nearly 20% more internal air volume than a traditional dreadnought. The Super D-14 fret body produces a massive, room-filling voice with exceptional projection, allowing you to command any space with less effort. A solid spruce top with forward-shifted Golden Era scalloped X-bracing ensures strong resonance and dynamic response, while genuine mahogany back and sides provide the warmth, punch and midrange clarity that define the D-18 lineage. Handcrafted in Nazareth, Pennsylvania, and finished with timeless Style 18 appointments, the Super D-18 represents a bold evolution of Martin tradition built for players who demand maximum acoustic authority.

Super Dreadnought Body and GE Scalloped X-Bracing

Martin’s Super D body shape takes the familiar dreadnought silhouette and scales it up to deliver dramatically increased output and low-end authority. With significantly greater internal air volume, this design produces deeper bass, enhanced headroom and a broader dynamic range, making it ideal for players who drive a guitar hard. Forward-shifted Golden Era scalloped X-bracing allows the spruce top to move more freely, improving sustain, resonance and sensitivity while maintaining structural integrity. The result is a guitar that responds effortlessly to light touch or aggressive attack, projecting with clarity and force in any musical setting.

Spruce Top and Mahogany Back and Sides for Powerful Tone

A solid spruce top forms the sonic foundation of the Super D-18, delivering articulation, clarity and projection across the frequency range. Spruce’s stiffness-to-weight ratio supports crisp note definition and dynamic responsiveness even at higher volumes. Genuine mahogany back and sides add warmth, focused low end and punchy midrange presence that keeps the expanded bass response controlled and musical. This time-tested tonewood pairing excels for flatpicking, strumming and vocal accompaniment, offering a powerful yet balanced voice in solo or ensemble settings.

GE Modified Low Oval Neck for Effortless Playability

The Super D-18 features a GE Modified Low Oval neck profile with Martin’s high-performance taper, creating a comfortable modern feel that supports smooth movement across all 20 frets. A traditional dovetail neck joint enhances resonance and long-term stability, while an ebony fingerboard provides a fast, smooth playing surface with crisp attack and durability. Abalone Old Style 18 dot inlays offer clear visual reference without distracting from the guitar’s classic aesthetic. With a 25.4" scale length and 1-3/4" nut width, the Super D-18 balances power, precision and comfort.

Classic Martin Hardware and Elegant Style 18 Appointments

Timeless Style 18 details connect the Super D-18 to Martin’s storied heritage. Black body binding, a faux tortoiseshell pickguard and an Old Style 18 multi-stripe rosette complement the gloss top and dark mahogany finish. The GE modern belly ebony bridge with bone saddle and ebony bridge pins supports strong fundamentals and excellent sustain. Nickel open-gear tuners with butterbean knobs provide smooth tuning and a vintage-inspired look, while a bone nut ensures consistent string response. The guitar ships in a molded hardshell case for protection on the road or in storage.

Super D-18: A New Standard for Acoustic Power

The Martin Super D-18 stands as a new benchmark in acoustic projection and authority. Its oversized Super D body, forward-shifted GE scalloped bracing and classic spruce and mahogany construction combine to produce a commanding voice that remains balanced and articulate. Handcrafted in Nazareth, Pennsylvania, the Super D-18 honors Martin tradition while pushing acoustic design forward, making it an ideal choice for players who need their guitar to lead, drive and fill any room with unmistakable Martin tone.