Pricing and availability
We compare 600+ stores and found this item at 6 stores. Prices updated .
Store
Reviews
Price
Average Price: $4,375
High-end/Boutique
$200
$601+
Price Tier
Budget
Standard
High-end
Price History
Based on price data from 5 merchants for "Martin J-40". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
The Martin J-40 is not just an acoustic guitar; it's a sonic masterpiece designed for musicians who seek the perfect blend of tradition and innovation. With its jumbo-sized body, this guitar delivers thunderous sound, offering a robust low-end that complements its shimmering highs. Crafted with a solid spruce top and East Indian rosewood back and sides, the J-40 promises a rich, complex tone that resonates with every strum. The Golden Era forward-shifted X-bracing ensures exceptional projection and response, making it ideal for both intimate fingerpicking and vigorous strumming.
The J-40's aesthetics are equally impressive, sporting antique white binding, reduced hexagon abalone fingerboard inlays, and a faux tortoise pickguard. Its Modified Low Oval neck with High Performance Taper provides unparalleled playability, while the computerized Plek setup ensures smooth action across the ebony fingerboard. With open-geared tuners and a premium bone nut and saddle, this guitar maintains pitch-perfect tuning and offers a classic look. Whether you're a touring musician or a passionate hobbyist, the Martin J-40 stands as a testament to fine craftsmanship and superior sound quality.
Key Features:
- Jumbo-sized body for powerful sound and projection
- Solid spruce top with Golden Era forward-shifted X-bracing
- East Indian rosewood back and sides for rich tonal depth
- Modified Low Oval neck with High Performance Taper for comfortable playability
- Antique white binding and abalone rosette for visual elegance
- Open-geared tuners for stable tuning
- Includes durable hardshell case for safe transport
Product specs
| String Type | Steel |
| Number of Strings | 6 |
| Left-/Right-handed | Right-handed |
| Body Shape | J-40 Jumbo |
| Back & Sides Wood | East Indian Rosewood |
| Top Wood | Spruce |
| Finish | Gloss |
| Body Bracing | Scalloped Forward Shifted X-bracing |
| Binding | Antique White |
| Neck Wood | Mahogany |
| Neck Shape | Modified Low Oval, High Performance Taper |
| Radius | 16" |
| Fingerboard Inlay | Abalone Reduced Hexagon |
| Number of Frets | 20 |
| Scale Length | 25.4" |
| Nut Width | 1.75" |
| Nut/Saddle Material | Bone/Bone |
| Bridge Material | Ebony |
| Tuning Machines | Gold Open Gear |
| Strings | TitaniumLT |
| Case/Gig Bag | Hardshell Case |
FAQs
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What type of wood is used in the construction of the Martin J-40?
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The Martin J-40 features a top made of spruce and back and sides crafted from East Indian rosewood, providing a rich tonal depth and resonance.
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What is the neck profile of the Martin J-40?
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The Martin J-40 has a modified low oval neck shape with a high-performance taper, offering comfortable playability for various hand sizes and playing styles.
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Does the Martin J-40 come with a case?
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Yes, the Martin J-40 includes a hardshell case, ensuring protection and easy transport for your guitar.
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Is the Martin J-40 suitable for fingerstyle playing?
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The Martin J-40's jumbo body and scalloped forward-shifted X-bracing deliver a balanced tone with clear articulation, making it well-suited for fingerstyle as well as strumming.
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What is the scale length of the Martin J-40?
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The Martin J-40 features a scale length of 25.4 inches, contributing to its full sound and enhanced string tension for better projection.
Videos
Musician's Friend
Martin J-40 Standard Jumbo Acoustic Guitar
Reviews
PROS
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Resonant and articulate sound with exceptional sustain
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Modified low oval neck profile offers comfortable playability
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Balanced tone suitable for a variety of playing styles
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Stunning visual appeal with abalone and multi-stripe appointments
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High-quality materials: Indian rosewood, Sitka spruce, scalloped braces
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Wide dynamic range from subtle to loud without being boomy
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Suitable for both fingerstyle and group performances
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Offers a unique Martin sound, distinct from dreadnought models
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J-40 model considered a hidden gem in the guitar world
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Customizable through Martin's Custom Shop for personalized features
CONS
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Large body size may not be ideal for everyday practice
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Titanium strings can be abrasive on fingers and nails
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High price point may be a barrier for some buyers
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Martin J-40.
Build quality
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The Martin J-40 is noted for its jumbo body size, providing a big, resonant sound without looking overly large, unlike some Gibson jumbos.
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User experience
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A player mentioned that while the J-40 offers a great sound, the larger body size might not suit everyone, particularly those who prioritize comfort over size.
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Owners frequently reach for the J-40 over newer models, highlighting its enduring appeal and exceptional sound quality.
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The J-40 is described as hard to find and somewhat "unknown," adding to its allure and exclusivity among Martin enthusiasts.
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Comparisons
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The J-40 was compared favorably to the Stefan Grossman HJ-38, known for its Madagascar Rosewood back and sides, highlighting the premium sound quality associated with Martin's jumbo models.
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The J-40's mid-range clarity is highlighted as superior to the D28 and D41, making it a favored choice for fingerstyle players seeking clear mid-range tones.
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The J-40's nut width differs from models like the M36 and HD28, impacting string spacing and potentially influencing comfort for fingerstyle musicians.
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Setup and maintenance
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A luthier-adjusted saddle and fret work improved intonation and made the guitar ring evenly, with a setup lowering the action for easier playability up to the 12th fret.
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One owner recommends dropping to 12-gauge strings and performing neck work for optimized playability, enhancing the J-40's versatility.
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Mods and upgrades
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Installing a K&K Pure pickup is a common upgrade among J-40 owners for enhanced sound quality when amplified.
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Use cases and applications
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