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. Featuring a solid spruce top and East Indian rosewood back and sides, this jumbo delivers 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 ideal for strummers, singer-songwriters, and studio players alike. With a tone that’s rich, articulate, and powerful, the J-40 is a dynamic choice for those who want their sound to stand out.

Visually, the J-40 is as refined as it is commanding. Antique white binding, a stunning abalone rosette, reduced hexagon inlays, and an ebony fingerboard deliver timeless Martin sophistication. A satin-finished genuine mahogany neck with Martin’s GE Modified Low Oval profile ensures smooth playability across all 20 frets. Combined with modern updates from Martin’s refreshed Standard Series—like a thinner fingerboard, vintage-style heel, and precision bone nut and saddle—the J-40 is the perfect blend of heritage and innovation.

• Jumbo body delivers massive tone and unmatched low-end projection

• Spruce and rosewood tonewood pairing provides clarity, warmth, and shimmering highs

• Golden Era forward-shifted bracing for enhanced top movement and tonal richness

• GE Modified Low Oval neck offers a comfortable, modern playing feel

• Elegant vintage-inspired appointments include abalone rosette and reduced hexagon inlays

Specs

• Body Shape J-40 Standard Jumbo

• Top Wood Solid Spruce

• Back & Sides Wood Solid East Indian Rosewood

• Top Finish Gloss

• Color Aging Toner

• Bracing Forward Shifted X-brace (Golden Era Scalloped)

• Binding Antique White

• Neck Wood Genuine Mahogany

• Neck Shape GE Modified Low Oval

• Neck Finish Satin

• Scale Length 25.4"

• Fingerboard Material Ebony

• Fingerboard Radius 16"

• Fingerboard Inlay Reduced Hexagon

• Number of Frets 20

• Nut Width 1.75"

• Nut Material Bone

• Saddle Material Compensated Bone

• Bridge Material Ebony

• Tuning Machines Nickel Open-gear

• Strings Martin Authentic Acoustic Lifespan 2.0, .013-.056

• Case Hardshell Case

• Manufacturer Part Number 10Y25J40