Martin Guitar J40

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Martin Guitar J40

Martin Guitar

J40

4.7 Expert Rating

Product Info

Article Number: 606109
Model: J40
Price: $6,433.90

* Prices may vary. Check retailer for current pricing and availability.

The J40 is a powerhouse – a real statement jumbo Martin. It’s built for players who want a massive, booming acoustic voice, perfect for singer-songwriters and rhythm players who love a full-bodied tone. This is a premium-priced instrument, but the build quality and sonic character are truly special.

Product Description

  • Martin Guitar J40
  • Steel-String Guitar
  • 2025 Model
  • Type: Jumbo
  • Top: Solid spruce
  • Back and sides: Solid rosewood
  • Neck: Mahogany
  • Headstock: Rosewood
  • Fingerboard: Ebony
  • Abalone reduced hexagon fingerboard inalys
  • Abalone with multi-stripe rosette
  • Scale: 645 mm (25.4")
  • Nut Width: 44.5 mm (1.75" )
  • Bone nut
  • 20 frets
  • Pickguard: Tortoise
  • Ebony bridge with compensated bone saddle
  • Open gold-plated machine heads
  • Strings: MA550T Authentic Treated Medium (Art. #473904#)
  • Colour: Natural high-gloss
  • Includes ply hardhsell case
  • Made in USA
PROS
  • • Solid rosewood back/sides deliver exceptional warmth and sustain.
  • • Spruce top offers bright articulation and responsive dynamics.
  • • Ebony fingerboard provides a smooth, effortless playing experience.
  • • The J-40's jumbo body creates a powerful, resonant projection.
CONS
  • • The jumbo body makes it less comfortable for smaller players or those preferring a slimmer profile.
  • • High-gloss finish may require more care and be prone to fingerprints.
  • • Limited tonal versatility; excels in strumming, less suited for intricate fingerstyle.

Product Video

Key Features

Top Wood Solid Spruce
Back & Sides Solid Rosewood
Neck Material Mahogany
Fingerboard Ebony with Abalone Inlays
Scale Length 645 mm (25.4")
Frets 20
Electronics None (Acoustic)
Weight Approximately 6.8 lbs (estimated)

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Frequently Asked Questions

The D-28 is known for its balance, while the J40 emphasizes low-end response and volume; expect a more 'boomy' and powerful tone from the J40.
The 1.75” nut width provides a slightly wider feel, which some with smaller hands might find a bit less comfortable, but manageable with practice.
Medium gauge strings like the included MA550T are ideal to fully utilize the J40’s projection and sustain, but lighter gauges can be used for easier playability.

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