Martin Grand J-28E DN Double Neck Acoustic/Electric Guitar with Hardshell Case

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For musicians seeking a bold new sonic frontier, the Martin Grand J-28E DN Double Neck is a rare masterpiece that offers a truly unique playing experience — now available at Haggerty’s Music. This remarkable guitar combines two necks — six-string and twelve-string — into one meticulously crafted instrument, giving players the ability to explore expansive musical textures, alternative tunings, and layered arrangements in real time. Featuring a powerful Grand Jumbo body, this guitar delivers room-filling resonance and rich overtones that respond beautifully to both strumming and fingerstyle techniques.

Built with solid East Indian rosewood back and sides and a solid spruce top, the Grand J-28E DN produces a robust yet articulate tone, perfect for solo performers, backing musicians or recording artists. Both necks are made from select hardwood and topped with smooth ebony fingerboards; the six-string neck features a Modified Low Oval profile with a High-Performance Taper, while the twelve-string neck offers a comfortable grip tailored for complex voicings. Innovative double X-bracing and dual dovetail neck joints ensure tonal stability and projection across both necks. Outfitted with a custom Fishman dual-output electronics system, this guitar is ready for the stage, providing independent amplification for each neck. Finished in gloss with aging toner and classic Style 28 appointments, the Grand J-28E DN stands as a testament to Martin’s heritage and commitment to innovation. A molded hardshell case is included.

Features/Specs

Body

• Body Size: Grand J-14 Fret
• Top Wood: Solid Spruce
• Back & Sides: Solid East Indian Rosewood
• Top Finish: Gloss with Aging Toner
• Back & Side Finish: Gloss
• Bracing Pattern: Unique Double Neck X-Brace (Non-Scalloped with Scalloped Tone Bars)
• Rosette: Multi-Stripe
• Binding: Antique White
• Bridge: Ebony Modern Belly – Drop-In Saddle
• Bridge Pin Material: Bone
• Bridge String Spacing: 2 5/32" (6-string), 2 5/16" (12-string)
• Saddle: Compensated Bone, 16" Radius

Necks

• Neck Wood: Select Hardwood
• Neck Finish: Satin
• Neck Shape: Modified Low Oval (6-string), 12-String Profile (12-string)
• Neck Taper: High-Performance Taper
• Fingerboard: Ebony
• Fingerboard Inlays: Mother of Pearl Style 28
• Scale Length: 25.4"
• Number of Frets: 20
• Nut Material: Bone
• Fingerboard Width at 12th Fret: 2 1/8" (6-string), 2 1/4" (12-string)

Hardware

• Tuning Machines: Nickel Open Gear with Butterbean Knobs
• Bridge Pins: Bone with Tortoise Pattern Dots
• Pickguard: None

Electronics

• Electronics: Fishman Custom Double Neck System
• Controls: Independent outputs for each neck

Miscellaneous

• Case: Molded Hardshell Case