Martin J-40 Jumbo Acoustic Guitar

Was: As low as $4,099.00

0% Interest for 6 Months**

On Purchases of $199 or more with your Sam Ash credit card. Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 6 months. Minimum Monthly Payments Required.

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0% Interest for 6 Months

On select purchases $199 or more with your Sam Ash card now thru 06/19/21.

On Purchases of $199 or more with your Sam Ash credit card.* Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 6 months. Minimum Monthly Payments Required. Note: Your first order with your Sam Ash Credit Card can only be shipped to the billing address on your application.


*Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo purchase if you pay the promo purchase amount in full within 6 months. If you do not, interest will be charged on the promo purchase from the purchase date. Depending on purchase amount, promotion length and payment allocation, the required minimum monthly payments may or may not pay off purchase by end of promotional period. Regular account terms apply to non-promotional purchases and, after promotion ends, to promotional balance. For new accounts: Purchase APR is 29.99%; Minimum Interest Charge is $2. Existing cardholders should see their credit card agreement for their applicable terms. Subject to credit approval. We reserve the right to discontinue or alter the terms of this offer at any time.


Qualifying items must be purchased at the advertised tagged prices. This offer is not valid for price matches, competitor coupon matches, used or previously marked down items, closeout gear or door busters.

Seen a better price?
Please make a selection from the drop down menu and browse through the Martin J-40 Jumbo Acoustic Guitars that are currently in stock and have been individually photographed/listed by their unique serial number.

More on the way - call 800-472-6274 or chat for availability

Sam Ash Gear Shield Extended Service Plans

Maximum Protection at Minimal Cost

2 and 3 Year "No Hassle" Extended Warranty Coverage to repair or even replace* your gear so you won't miss a beat!


  • Covers new and used gear
  • No Lemon Policy
  • 100% Parts and Labor Coverage
  • No Out Of Pocket Expenses or Hidden Fees
  • Transferable if you sell or give away your gear
  • Free shipping should you need a repair

Get The Best Back Back Up For Your Gear:

  • Power surge failures from day one: COVERED!
  • Wooden cracks in acoustic guitars: COVERED!
  • Defects to guitar headstocks, necks or bodies: COVERED!
  • Cracked wooden drumshells: COVERED!
  • Mechanical breakdowns due to normal wear and tear: COVERED!
  • Electrical breakdowns due to normal wear and tear: COVERED!
  • Commercial use: COVERED!

*Replacement for new products costing less than $500. Download the full terms and conditions here

Classic style with a hint of 2018, Martin introduces the J-40 jumbo-style acoustic guitar. With its 2018 features complementing the classic construction on this beauty, you can expect to get a gorgeous, big sound that projects. The Martin 40 Style appointments give this guitar its unmistakable premium aesthetic. For guitarists who have searched time and time again for the perfect powerful sounding acoustic, the J-40 is the one for you.

2018 Features
In 2018, we're introduced to an array of updates, including a modified low oval neck with Martin's High Performance taper, which gives you the unparalleled comfort and playability. The Sitka spruce scalloped forward shifted "X" bracing provides you with the superior projection and sonic horsepower, especially when paired with the Jumbo-sized body and rosewood. The top wears an aging toner gloss finish while the headstock comes fitted with gold open-geared tuners with butterbean knobs, giving it a classy, vintage look.

Classic Construction
The Martin J-40 has a tight-waisted East Indian rosewood jumbo body topped with a Sitka spruce top. The fingerboard is made of ebony and of course with these tonewoods, you get the incredibly deep, rich sound that Martin guitars are famous for. Sonically, this traditional Jumbo construction and fantastic pairing of tonewoods make this J-40 the perfect choice for strummers looking for outstanding volume, projection, and punch.

Martin Style 40: Reimagined
Just like all Martin instruments, the Style 40 Martin guitars are all about premium quality, tone, and craftsmanship. What really sets the Style 40 guitars apart from the rest of the Standard Series are the absolutely breathtaking aesthetics and upscale style they offer. Future heirlooms that are sure to please discerning players for years to come, the Style 40 Martin guitars are made using the finest East Indian rosewood and a Sitka spruce top with hand-carved scalloped bracing for a deep, rich, powerful voice that's delivered with exceptional clarity. The updated forward shifted bracing on most models (except OM-42 and 000-42) will add some extra sonic horsepower to your sound, especially on the low end. Each model also sports Martin's ergonomic High Performance neck taper to provide you with superb comfort and playability while a selection of gorgeous abalone pearl adornments cater to its exquisite looks. Aging top toner, Antique White binding, and gold open-gear tuners give the Style 40 guitars that unmistakable old-school Martin vibe.


  • J-14 Fret Body with Sitka Spruce Scalloped Forward Shifted "X" Bracing
  • Sitka Spruce Top with East Indian Rosewood Back & Sides
  • 25.4"-Scale Modified Low Oval & High-Performance Taper Genuine Mahogany Neck
  • Ebony Fingerboard & Bridge with Bone Nut & Compensated Bone Saddle
  • Gold Open Gear Tuning Machines with Butterbean Knobs
  • Includes Hardshell Case

Get your Martin J-40 Jumbo Acoustic Guitar from Sam Ash today. With over nine decades of experience in the music retail business, Sam Ash is dedicated to helping every player and collector find the distinctive instrument that they've been longing for. And remember, your purchase is protected by the security of our 45/60 day return/price protection policy.

Things You Will Get:

  • Acoustic Guitar
  • Hardshell Case
  • Model J-40 (2018)
    Series Standard Series
    Cutaway No
    Solid Top No
    Tuner No