Martin OMJM John Mayer Signature W/ Hardshell Case

The Martin OMJM—John Mayer’s signature Orchestra Model—is one of the most expressive, responsive, and musically versatile guitars Martin has ever built. Designed in collaboration with Mayer himself, the OMJM delivers the clarity, balance, and dynamic sensitivity that Upstate South Carolina players love, especially those who lean into fingerstyle, acoustic pop, worship, and nuanced singer‑songwriter work. Its solid Engelmann spruce top paired with East Indian rosewood back and sides creates a warm, open voice with shimmering highs and a rich low‑end foundation. Whether you’re playing softly or digging in, the OMJM reacts with incredible touch sensitivity, making it a favorite for players who want a guitar that feels alive in their hands.

The Modified Low Oval neck with Narrow Taper offers a smooth, fast feel that suits intricate chord voicings and melodic lead lines. Premium appointments—including a gloss finish, hybrid scalloped bracing, and elegant OM‑style detailing—give the OMJM a refined, boutique‑level presence. Equipped with Fishman® Gold Plus Natural electronics, it delivers a clean, articulate amplified tone that works beautifully in worship settings, studio sessions, and intimate live performances across Greenwood, Greenville, and the broader Upstate SC region. For musicians searching for a high‑end Martin OM‑style acoustic‑electric with exceptional responsiveness and tonal depth, the OMJM stands in a class of its own.

At Newell’s Music in Greenwood, SC, every guitar we sell is handpicked for quality, tone, and player appeal. We don’t just stock boxes—we inspect, set up, and fine-tune each instrument to ensure it’s stage-ready from day one. Every guitar comes with our lifetime adjustment service, so you can count on ongoing support as your playing evolves. Whether you’re buying online or picking up in person, we re-inspect before delivery to guarantee your guitar arrives safely and performs flawlessly. It’s all part of the Newell’s Experience.

Martin OMJM Specifications

Body

• Body Size: OM‑14 Fret
• Top: Solid Engelmann Spruce
• Back & Sides: East Indian Rosewood
• Bracing: Hybrid Scalloped X‑Brace
• Finish: Gloss Top, Back & Sides

Neck

• Neck Profile: Modified Low Oval
• Taper: Narrow
• Neck Material: Select Hardwood
• Fingerboard: Ebony
• Scale Length: 25.4"
• Nut Width: 1 11/16"

Hardware

• Bridge: Ebony
• Saddle: Compensated Bone
• Nut: Bone
• Tuners: Nickel Open‑Gear with Butterbean Knobs

Electronics

• System: Fishman® Gold Plus Natural

Included

• Hardshell case
• Martin factory setup and warranty