Martin J-40 Jumbo Acoustic Guitar: Standard Series Reimagined

The Martin J-40 Standard combines the bold sonic footprint of a jumbo acoustic with elegant, vintage-inspired appointments. A solid spruce top and East Indian rosewood back and sides deliver a deep, thunderous low end and shimmering highs, supported by forward-shifted Golden Era scalloped X-bracing for exceptional resonance and volume. The square-shouldered body offers massive projection well suited to strummers, singer-songwriters, and studio players alike.

Visually, the J-40 is as refined as it is commanding. Antique white binding, an abalone rosette, reduced hexagon inlays, and an ebony fingerboard deliver timeless Martin sophistication, while a satin-finished genuine mahogany neck with Martin's GE Modified Low Oval profile ensures smooth playability across all 20 frets. Combined with a thinner fingerboard, vintage-style heel, and precision bone nut and saddle, the J-40 is ideal for players who want heritage looks with a genuinely dynamic, powerful voice.

Features

• Jumbo body delivers massive tone and powerful low-end projection with a square-shouldered shape.
• Spruce and rosewood tonewood pairing provides clarity, warmth, and shimmering highs across the range.
• Golden Era forward-shifted scalloped bracing enhances top movement and tonal richness.
• GE Modified Low Oval neck offers a comfortable, modern playing feel across a satin-finished mahogany neck.
• Elegant vintage-inspired appointments include an abalone rosette and reduced hexagon fingerboard inlays.

Specs

• Body: J-40 Standard jumbo
• Top: Solid spruce
• Back & sides: Solid East Indian rosewood
• Top finish: Gloss
• Colour: Aging toner
• Bracing: Forward-shifted X-brace, Golden Era scalloped
• Binding: Antique white
• Neck: Genuine mahogany, GE Modified Low Oval profile
• Neck finish: Satin
• Scale length: 25.4"
• Fingerboard: Ebony, 16" radius
• Fingerboard inlay: Reduced hexagon
• Number of frets: 20
• Nut width: 1.75"
• Nut: Bone
• Saddle: Compensated bone
• Bridge: Ebony
• Tuners: Nickel open-gear
• Strings: Martin Authentic Acoustic Lifespan 2.0, .013-.056
• Includes: Hardshell case