Martin Custom Shop D-18 Adirondack Spruce/Mahogany 2025

This gorgeous looking and sounding guitar merges Martin's Custom Shop-level materials and build quality with the in-store availablity of their core model of acoustics.

Top-shelf tonewoods meet handcrafted Custom Shop quality in this accessible, no-compromise Dreadnought. With Adirondack spruce, genuine mahogany, and forward-shifted bracing, it’s a powerful, resonant classic—ready to play, no special order required.

• D-14 Fret body size
• Genuine Mahogany back and sides
• Adirondack Spruce top with Aging Toner top colour
• GE Modified Low Oval with High-Performance Taper neck
• 1 3/4'' fingerboard width at nut
• Hardshell case

Top

• Top Material: Adirondack Spruce
• Finish Top: Gloss
• Top Colour: Aging Toner
• Top Inlay Material: Multi-Stripe
• Top Detail: None
• Binding: Faux Tortoise
• Bridge Material: Ebony
• Bridge Style: GE Modern Belly - Drop in Saddle
• Bridge String Spacing: 2 5/32"
• Bridge Pin Material: Black Plastic
• Bridge Pin Dots: None
• Pickguard: Faux Tortoise
• Pickguard Inlay: None
• Rosette: Old Style 18 Multi-Stripe
• Saddle: Bone
• Saddle Radius: 16"

Body

• Body Size: D-14 Fret
• Construction: Dovetail Neck Joint
• Back Material: Genuine Mahogany
• Side Material: Genuine Mahogany
• Back and Side Finish: Gloss
• Back and Sides Colour: Dark Mahogany
• Back Detail: None
• Side Detail: None
• Back Purfling/Strip: Style 18
• Back Inlay Material: None
• Side Inlay Material: None
• Bracing Pattern: Forward-Shifted X-Brace
• Brace Shape: GE-Scalloped Hand Shaped
• Brace Material: Adirondack Spruce
• Brace Size: 5/16"
• Heelcap: Faux Tortoise
• Endpiece: Faux Tortoise
• Endpiece Inlay: None

Neck

• Neck Shape: GE Modified Low Oval
• Neck Taper: High-Performance Taper
• Neck Material: Select Hardwood
• Neck Color: Dark Mahogany
• Finish Neck: Satin
• Scale Length: 25.4"
• Number of Frets Total: 20
• Neck Joins Body At: 14th Fret
• Fingerboard Material: Ebony
• Fingerboard Width at 12th Fret: 2 1/8''
• Fingerboard Width at Nut: 1 3/4''
• Fingerboard Inlay Style: Old Style 18
• Fingerboard Inlay Material: Abalone
• Fingerboard Binding Material: None
• Side Dots: White

Headstock

• Headstock Shape: Solid with Square Taper
• Headplate Material: East Indian Rosewood
• Headplate Logo Style: Authentic Style Script Overlay
• Headplate Binding Material: None
• Tuning Machines: Nickel Open Gear
• Knob: Butterbean
• Nut Material: Bone