Unleash unmatched versatility and sonic power with the Martin Grand J-28E DN, the first double-neck guitar in over a century. Blending Martin’s legendary craftsmanship with modern innovation, this Grand Jumbo acoustic-electric delivers rich, resonant tone and extraordinary playability across both six- and twelve-string necks. Designed for players seeking limitless musical expression, the Grand J-28E DN combines classic elegance with advanced features, making it a stage-ready powerhouse that redefines what a single instrument can do.

Features 

• Grand J-14 Fret body size
  
• East Indian Rosewood back and sides
  
• Spruce top with Aging Toner top color
  
• Modified Low Oval (6 String), 12 String (12 String) with High-Performance Taper neck
  
• 1 11/16" (6 String), 1 13/16" (12 String) fingerboard width at nut
  
• Includes built-in custom Fishman® electronics
  
• Molded Hardshell case

Specifications 

General
Product Name: Grand J-28E DN
Series: Standard Series
Orientation: Right-Hand
Electronics: Yes
Electronics Options: Fishman Double Neck System

Body
Body Size: Grand J-14 Fret
Construction: Dovetail Neck Joint
Top Material: Spruce
Top Finish: Gloss
Top Color: Aging Toner
Top Inlay Material: Multi-Stripe
Top Detail: None
Binding: Antique White
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 28
Back Inlay Material: Multi-Stripe
Side Inlay Material: None
Bracing Pattern: Unique Double Neck X-Brace
Brace Shape: Unique DN Non-Scalloped X with Scalloped Tone Bars
Brace Material: Spruce
Brace Size: 5/16"
Heelcap: Antique White
Endpiece: None
Endpiece Inlay: None
Bridge Material: Ebony
Bridge Style: Modern Belly - Drop in Saddle
Bridge String Spacing: 2 5/32" (6 String), 2 5/16" (12 String)
Bridge Pin Material: Bone
Bridge Pin Dots: Tortoise Pattern
Pickguard: None
Pickguard Inlay: None
Rosette: Multi-Stripe
Saddle: Compensated Bone
Saddle Radius: 16"

Neck
Neck Shape: Modified Low Oval (6 String), 12 String (12 String)
Neck Taper: High-Performance Taper
Neck Material: Select Hardwood
Neck Color: Dark Mahogany
Neck Finish: 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" (6 String), 2 1/4" (12 String)
Fingerboard Width at Nut: 1 11/16" (6 String), 1 13/16" (12 String)
Fingerboard Inlay Style: Style 28
Fingerboard Inlay Material: Mother of Pearl
Fingerboard Binding Material: None
Side Dots: White

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