Martin Grand J-28E Double Neck w/case 2957714

Serial: 2957714

The Martin Grand J-28E Double Neck represents one of the most ambitious and innovative builds to come out of Martin’s Standard Series — combining a 6-string and 12-string into a single, fully realized acoustic-electric instrument without compromise. This isn’t a novelty piece — it’s a serious, stage-ready tool built with the same attention to tone, structure, and long-term stability that defines Martin at its best.

Built on a Grand Jumbo platform, this guitar delivers massive projection, depth, and headroom. The pairing of a solid spruce top with East Indian rosewood back and sides produces the classic Martin voice — powerful low end, clear trebles, and a rich overtone response — with enough authority to support both necks equally. A specially engineered double-neck X-bracing system ensures balance and clarity across both the 6-string and 12-string configurations.

Structurally, this is where things get serious. Dual compound dovetail neck joints provide exceptional stability and energy transfer, allowing both necks to resonate efficiently while maintaining tuning integrity under significantly increased tension. It feels and responds like a true Martin — just expanded.

Each neck is purpose-built. The 6-string features a Modified Low Oval profile for familiar, comfortable playability, while the 12-string neck is shaped to support full, articulate chord work without feeling cumbersome. Both necks feature ebony fingerboards and satin finishes, offering a smooth, fast feel that holds up across extended playing sessions.

Plugged in, the custom Fishman Double Neck system gives you full control and a natural acoustic voice, making this a legitimate performance instrument — not just a visual centerpiece. Whether you’re layering textures live or writing with expanded tonal options, it delivers without compromise.

This is a rare kind of instrument — one that expands what an acoustic guitar can do while still feeling grounded in tradition.

Highlights

• Martin Standard Series double neck acoustic-electric (6-string + 12-string)
• Grand Jumbo body for maximum projection and depth
• Solid spruce top with East Indian rosewood back and sides
• Dual compound dovetail neck joints for strength and resonance
• Custom Fishman Double Neck electronics system

Specifications

Body

• Body Size: Grand Jumbo (Grand J-14 Fret)
• Top: Solid Spruce
• Back & Sides: Solid East Indian Rosewood
• Bracing: Double Neck X-Bracing
• Construction: Compound Dovetail Neck Joints (dual)
• Binding: Antique White
• Rosette: Style 28 Multi-Stripe

Neck

• 6-String Neck Profile: Modified Low Oval
• 12-String Neck Profile: Custom Profile
• Fingerboards: Ebony
• Finish: Satin
• Inlays: Style 28 (Mother-of-Pearl)

Hardware

• Bridge: Ebony Modern Belly (both necks)
• Bridge Pins: Bone
• Tuners: Open-gear, butterbean style

Electronics

• System: Fishman Double Neck System
• Controls: Integrated onboard controls for both necks

Miscellaneous

• Case: Molded Hardshell Case Included

Why Buy from Tone Shop Guitars?

Tone Shop Guitars curates instruments that stand out — not just visually, but in how they perform and inspire. From unique builds like this to carefully selected Custom Shop pieces, every guitar we offer is professionally inspected, expertly set up, and backed by a team that understands what serious players expect.