Martin Grand J-28E DN Grand Jumbo Double Neck 

For the first time in over a century, Martin is thrilled to offer a one-of-a-kind double-neck instrument – the Grand J-28E DN. As a member of the popular Standard Series lineup, this all-new guitar combines Martin’s renowned quality and craftsmanship with modern innovation, featuring an acoustic-electric with a twelve and six-string neck, giving you the versatility to explore new sounds, tunings, and musical textures all on one guitar. Its powerful gloss Grand Jumbo body delivers a bold, resonant tone, with solid East Indian rosewood back and sides and a solid spruce top that ensures balance and clarity across all playing styles. This double-neck guitar took years to perfect, and thanks to cutting-edge technology at our Nazareth factory, the Grand J-28E DN, featuring two compound dovetail neck joints and unique X bracing, is now available to the public. Both necks feature a smooth satin finish and ebony fingerboard, with the six-string neck offering a slightly slimmer profile at the nut. It also includes built-in custom Fishman® electronics, making it ready for the stage and studio. With classic 28-style appointments and endless sonic possibilities, this guitar is a dream for players seeking an extraordinary instrument that’s anything but standard.

Key Features of the Grand J-28E DN:

• Body & Construction: Grand Jumbo body with 28-style trim, Sitka spruce top with aging toner, and East Indian rosewood back and sides.
• Necks: Includes both a 6-string and a 12-string neck, both with a 25.4-inch scale length, featuring ebony fingerboards.
• Electronics: Equipped with custom Fishman electronics, featuring a toggle switch to select between or combine the necks through a single output jack.
• Design: Utilizes a single soundhole with two separate bridges and 18 bridge pins.
• Development: Inspired by a 2009 prototype and influenced by John Mayer’s touring needs, this model was made possible through advanced 3D CNC technology. 

Highlights

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
Molded Hardshell case

TOP

Top Material: Spruce
Finish Top: Gloss
Top Color: Aging Toner
Top Inlay Material: Multi-Stripe
Top Detail: None
Binding: Antique White
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"

BODY

Body Size: Grand J-14 Fret
Construction: Dovetail Neck Joint
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

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
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" (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

HEADSTOCK

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