The Martin J-40 commands attention with a bold, resonant voice and unmistakable presence, making it a centerpiece for any musician. Celebrated for its rich, balanced tone and dynamic projection, this acoustic guitar delivers depth and clarity that inspire creativity across every style and setting. Combining classic craftsmanship with modern refinements, the J-40 offers effortless playability, elegant design, and the kind of expressive sound that has made it a favorite of performers for generations. With a perfect blend of power, precision, and character, it’s a guitar built to elevate every performance and capture the true spirit of your music.

Features 

• J-14 Fret body size
  
• East Indian Rosewood back and sides
  
• Spruce top with Aging Toner top color
  
• GE Modified Low Oval with High-Performance Taper neck
  
• 1 3/4'' fingerboard width at nut
  
• Hardshell case

Specifications 

General
Scale Length: 25.4"
Construction: Dovetail Neck Joint
Number of Frets Total: 20
Neck Joins Body At: 14th Fret

Body
Body Size: J-14 Fret
Top Material: Spruce
Finish Top: Gloss
Top Color: Aging Toner
Top Inlay Material: Multi-Stripe
Top Detail: None
Back Material: East Indian Rosewood
Side Material: East Indian Rosewood
Back and Side Finish: Gloss
Back and Sides Color: Natural
Back Detail: None
Side Detail: None
Back Purfling/Strip: Style 45 with Black Stripe
Back Inlay Material: Multi-Stripe
Side Inlay Material: Multi-Stripe
Bracing Pattern: Forward Shifted X-Brace
Brace Shape: GE-Scalloped
Brace Material: Spruce
Brace Size: 5/16"
Binding: Antique White
Heelcap: Antique White with Multi-Stripe
Endpiece: Antique White
Endpiece Inlay: Multi-Stripe

Neck
Neck Shape: GE Modified Low Oval
Neck Taper: High-Performance Taper
Neck Material: Genuine Mahogany
Neck Color: Dark Mahogany
Finish Neck: Satin
Fingerboard Material: Ebony
Fingerboard Width at 12th Fret: 2 1/8"
Fingerboard Width at Nut: 1 3/4"
Fingerboard Inlay Style: Reduced Hexagon
Fingerboard Inlay Material: Abalone
Fingerboard Binding Material: Antique White with Multi-Stripe
Side Dots: Black
Nut Material: Bone

Hardware
Bridge Material: Ebony
Bridge Style: GE Modern Belly - Drop in Saddle
Bridge String Spacing: 2 5/32"
Bridge Pin Material: Bone
Bridge Pin Dots: Abalone
Saddle: Compensated Bone
Saddle Radius: 16"
Pickguard: Faux Tortoise
Pickguard Inlay: None
Rosette: Abalone with Multi-Stripe
Headstock Shape: Solid with Square Taper and Diamond
Headplate Material: East Indian Rosewood
Headplate Logo Style: Block Inlay Golden Era
Headplate Binding Material: Antique White with Multi-Stripe
Tuning Machines: Gold Open Gear
Knob: Butterbean