Martin Guitar Double Neck Grand J-28E 6-String / 12-String Acoustic Electric Guitar 

Tobias Music - Chicago Area’s Finest Guitars 

Proud Dealer of Martin Guitars for the past 47 years.

0% Financing Available (with approved credit) Contact us for details.

For the first time in over a century, Martin proudly introduces the Grand J-28E DN—a groundbreaking double-neck guitar in the Standard Series. Demand for this unique guitar started after a recent John Mayer acoustic tour that featured a similar guitar borrowed from the Martin Guitar museum. This innovative acoustic-electric pairs a six-string and a twelve-string neck on a powerful Grand Jumbo body, giving players unmatched versatility for new sounds, tunings, and textures. Crafted with a solid spruce top, East Indian rosewood back and sides, and classic 28-style appointments, it delivers bold, resonant tone with clarity across all styles. Both satin-finished necks and ebony fingerboards play effortlessly, with the six-string offering a slightly slimmer nut profile for comfort. Equipped with custom Fishman® electronics, dual compound dovetail neck joints, and unique X bracing, this stage and studio-ready instrument combines Martin’s legendary craftsmanship with modern innovation—making it the ultimate choice for guitarists seeking something truly extraordinary.

• Grand J-14 Fret Body
• East Indian Rosewood Back and Sides
• Sitka Spruce Top
• Aging Toner Top
• Modified Low Oval 6-String Neck
• Modified Low Oval 12-String Neck
• Gloss Body / Satin Necks
• Bone Bridge Pins
• Bridge String Spacing 2-5/32" 6 String - 2-5/16" 12 String
• Dovetail Neck Joints
• Unique Double Neck Non-Scalloped Bracing 5/16"
• Antique White Binding
• 25.4" Scale Lengths
• Ebony Fretboards and Bridges
• Nut Width 1-11/16" (6-String) 1-13/16" (12-String)
• Nickel Open Gear Tuners
• Fishman Double Neck Electronics System
• Molded Hardshell Case
• UPC #729789675611
• Product Code #2987068