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This brand new 4.2 lb Martin will ship insured, fully set up, and inspected from Rapid City, SD.

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The Martin Custom D-18 Acoustic captures the unmistakable spirit of a golden-era dreadnought, elevated with thoughtful prewar-inspired details that give it both power and refinement. At the heart of its voice is an Adirondack spruce top, long revered for its explosive headroom and projection, paired with traditional Style 18 mahogany back and sides. The result is a tone that feels alive and authoritative, with a deep, rumbling low end, warm and woody mids, and a clear, confident top that carries effortlessly in a room.

That Adirondack top is supported by hand-shaped Golden Era scalloped X-bracing, allowing the guitar to move air with ease while retaining focus and balance. Whether you’re driving hard with a flatpick or digging into a full strum, the guitar responds with dynamic range and punch that never collapses or gets congested. Mahogany’s naturally direct, mid-forward character keeps the sound defined and musical, making this D-18 feel equally at home in bluegrass, folk, and singer-songwriter settings.

Playability strikes a thoughtful balance between vintage feel and modern comfort. The genuine mahogany neck, carved in Martin’s GE Modified Low Oval profile, offers a fast, inviting grip that feels broken-in without being bulky. A 1.75-inch nut width provides room for clean articulation across a wide range of styles, while the ebony fingerboard with traditional Old Style 18 dot inlays reinforces the guitar’s understated, classic aesthetic.

Every detail reflects the care and intention of Martin’s Custom Shop, from the open-back Grover tuners to the timeless Style 18 appointments that keep the focus on tone and feel rather than flash. Built by hand in Nazareth, this Custom D-18 delivers the power and character players associate with prewar Martins, paired with a refined playing experience designed for today’s musicians. The Martin Custom D-18 Acoustic is available at Haggerty’s Music.

Features / Specs

Highlights

• Orientation: Right-Handed
• Electronics: None
• Bracing: Scalloped X-Bracing
• Cutaway: None

Body

• Body Shape: Dreadnought
• Top Material: Adirondack Spruce
• Top Finish: Gloss
• Top Color: Natural
• Back & Sides Material: Mahogany
• Back Configuration: 2-Piece
• Back & Sides Finish: Gloss
• Bracing: Scalloped X-Bracing
• Binding Material: Tortoise
• Rosette: Multi-Ply Black and White

Neck

• Neck Profile: GE Modified Low Oval
• Neck Material: Genuine Mahogany
• Neck Taper: High Performance
• Neck Depth: 0.818" at 1st Fret, 0.920" at 10th Fret
• Scale Length: 25.4"
• Nut Width: 1.75"
• Fingerboard Material: Ebony
• Fingerboard Inlay: Abalone Dots
• Fingerboard Binding: None
• Fingerboard Radius: 16"
• Fingerboard Spacing: 2-5/32"
• Neck Finish: Satin
• Neck Joint: Dovetail
• Headstock: Solid
• Headstock Binding: None
• Headplate Inlay: None
• Headplate Finish: Satin

Hardware

• Bridge Style: Modern Belly
• Bridge Material: Ebony
• Bridge Pins: Black
• Saddle: Bone
• Nut Material: Bone
• Tuners: Chrome Open Gear
• Pickguard: Tortoise

Miscellaneous

• Electronics: None
• Strings: Martin MA550T, .013-.056
• Case/Gig Bag: Hardshell Case
• Serial Number: 3034233
• Manufacture Date: 2025