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Martin J-40 Jumbo Acoustic Guitar: Standard Series Reimagined

Introducing the Martin J-40 Jumbo Acoustic Guitar, now reimagined and ready to inspire your music. This classic guitar features a tight-waisted jumbo body shape with a solid Sitka spruce top and East Indian rosewood back and sides. The hand-fit dovetail neck joint and modified low oval neck with high-performance taper offer superior playability, allowing you to effortlessly express your creativity. With a beautifully balanced tone and powerful response, this guitar is perfect for singer-songwriters seeking a powerful yet nuanced sound.

Experience the unmatched quality and craftsmanship of Martin guitars with the J-40. Whether you're a professional musician or a beginner, this guitar will inspire and elevate your playing. At Acoustic Centre, your one-stop-shop for the best guitars in Australia, you can find the Martin J-40 Jumbo Acoustic Guitar and other top-quality instruments. With our online guitar store and guitar shop in Melbourne, you can easily browse our selection and find the perfect guitar for your needs. Don't settle for anything less than the best - choose Martin guitars and Acoustic Centre.

The Martin J-40 Jumbo Acoustic Guitar comes with a Martin 580 Geib style hard case, ensuring that your guitar is always protected during transport. Optional electronics are also available, allowing you to amplify your sound and play to larger audiences. At Acoustic Centre, we are committed to providing the best service and support to our customers, with expert advice and personalized attention. Experience the joy of playing a Martin guitar and explore our selection today.

CONSTRUCTION: Dovetail Neck Joint
BODY SIZE:  J-14 Fret
TOP MATERIAL:  Sitka Spruce with Aging Toner
TOP BRACING PATTERN: Scalloped, Forward Shifted "X" Bracing
BACK/SIDE MATERIAL:  East Indian Rosewood
NECK SHAPE: Modified Low Oval w/ High Performance Taper
SADDLE:  16" Radius/Compensated Bone
RECOMMENDED STRINGS: Martin MA550T Authentic Acoustic
BRIDGE & END PINS: White Plastic with Abalone Dots
CASE: Martin 580 Geib style

Acoustic Centre offers free shipping on all new items to most locations within Australia on all orders over $99, excluding Western Australia, Northern Territory and Far North Queensland. Used items have a flat rate shipping fee of $59 within our usual shipping locations. We also offer competitive Express shipping options at checkout.

Customers located in Western Australia, Northern Territory and Far North Queensland recieve free shipping on all accessory orders over $99, but will incur a flat rate instrument or large item shipping charge of $179 (or $299 for Express shipping).

Occasionally due to issues with delivering to remote or unusual destinations, we aren't able to offer free postage. We reserve the right to retract the offer if freight costs exceed 15% of your purchase. We will always notify you if there is an issue and offer a full refund or arrange alternative delivery options.

All strings and accessories will be shipped with tracking via courier or Australia Post. Other items including guitars and amplification equipment will be shipped using our courier service providers, with a tracking number and signature on delivery.

The Acoustic Centre ships goods Australia-wide, however at this time we are unable to accept international orders.

Zip Money - Buy Now, Pay Later.

We offer 3 Months interest free on purchases under $1000, and 6 Months interest free on purchases over $1000.

Click here for more information and Application form - it only takes a minute!

Studio 19 RentalsWe rent the things people love.

Studio19 Rentals operates Australia’s foremost in-store Rental program for musical instrument retailers, and allows you to have the gear of your dreams now for a low monthly price. 

Studio19 offers:

  •  Low monthly payments
  •  Apply to buy at any time
  •  Protection plan available
  •  Return anytime after the minimum rental period
  •  No ongoing account keeping fees or charges

Click here  for more details.

We endeavour to show the actual instrument in stock whenever possible, but the guitar in stock may differ slightly from the one shown on our website. Materials used can look different from guitar to guitar, including timber grain and colour, parts colours and finishing. If an instrument is a one-of-a-kind or preowned guitar, the picture will always be of the actual guitar in stock, but production models may have slight variations to the picture shown.

If you're after a particular look, feel free to email us at or send us a message through our chat service to request photos of the actual guitar in stock. We are more than happy to send through pictures of all in-stock guitars, to make your choice easier.

Please note that returns will not be accepted for variations in timber grain /  colouring, finish variations and parts colouring, unless there is a fault with the instrument. If you have any questions at all regarding an instrument's appearance, just drop us a line - we're always happy to send photos, and if we have more than one instrument in stock you'll be able to choose the exact guitar that you receive!

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