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Martin OM-45 John Mayer Platinum Anniversary Acoustic Guitar - Platinum Gray Burst Top with Platinum Gray Toner Back & Sides Certified Open Box , 12999 dollars and 99 cents - Add to Cart Skip to Product Information

Martin OM-45 John Mayer Platinum Anniversary Acoustic Guitar - Platinum Gray Burst Top with Platinum Gray Toner Back & Sides Certified Open Box

Item ID: OM45JMPlAnnd1
Martin OM-45 John Mayer Platinum Anniversary Acoustic Guitar - Platinum Gray Burst Top with Platinum Gray Toner Back & Sides
12999 dollars and 99 cents
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Martin OM-45 John Mayer Platinum Anniversary Acoustic Guitar - Platinum Gray Burst Top with Platinum Gray Toner Back & Sides Certified Open Box
12999 dollars and 99 cents

A Gravity-defying 20th-anniversary John Mayer Martin

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It was 2003 when John Mayer’s first signature Martin acoustic hit the market. Now, 20 years later, Martin has reconvened with the Grammy winner to up the ante on the original OM-28JM in a big way with the OM-45 John Mayer Platinum-anniversary acoustic guitar! This stunning triumph of craftsmanship boasts a crystalline Engelmann spruce top, luxurious Guatemalan rosewood back and sides, and a lavish ebony fingerboard. Scalloped X-bracing provides supple projection and sustain as you strum lavish chordal passages. Meanwhile, the mahogany neck was crafted to John's exacting specifications, ensuring maximum comfort when you're finding the unplugged groove with percussive flair. Made with top-shelf tonewoods, high-quality hardware, and undeniable panache, the OM-45 John Mayer Platinum-anniversary acoustic guitar serves as an enduring testament to John Mayer and his signature acoustic style.

Top-shelf tonewoods impart a wonderland of sound

Step up to boldly impeccable Martin craftsmanship with the OM-45 John Mayer Platinum-anniversary guitar. It’s not hyperbole to say that every Martin acoustic guitar has that patented Martin spark, but the OM-45 John Mayer takes it to new heights. Martin spared no expense in choosing the perfect tonewoods. Its Engelmann spruce top richly rings with responsive and articulate tones, boldly projecting the voice of its Guatemalan rosewood body. Together, they sing with a delightfully resonant tone that’s assisted to greater heights of volume by its 1/4-inch scalloped X-bracing pattern. Strum a chord, and you’ll be treated to superb tone, long-lasting sustain, and note separation that doesn’t muddy the tonal playing field.

An acoustic only Martin could build

Martin sculpted the mahogany neck to John Mayer’s specifications, with a thinner 1-11/16-inch width at the nut to facilitate smooth action, comfort, and speed. The Loe Profile neck shape was then capped with a silky smooth ebony fingerboard for player comfort and a stunning look. It features a 25.4-inch scale length with 20 frets ready to do your acoustic bidding. Joined to the body with a dovetail neck joint, the mahogany neck contributes enhanced sustain to the overall tone. Other appointments like an ebony bridge, compensated bone saddles, and satin nickel Waverly tuners contribute to exceptional intonation and an enduring style.

A guitar with new light and old soul

John Mayer’s original OM-28J guitar had an aluminum border around the headplate and bridge. Building on that idea, Martin and John decided to give the OM-45 John Mayer acoustic a fine silver border that expands to encompass the fingerboard and ebony pickguard as well. To top it all off, this guitar was bestowed with a unique label that includes a signature from John himself. Don’t miss your chance — grab the Martin OM-45 John Mayer Platinum-anniversary acoustic from Sweetwater today.

Martin OM-45 John Mayer Platinum-anniversary Acoustic Guitar Features:

  • A top-quality John Mayer signature acoustic guitar commemorating 20 years since his first OM-28JM model release
  • Engelmann spruce top contributes clear and responsive tone
  • Luxurious Guatemalan rosewood back and sides pack unending resonant richness
  • Scalloped X-bracing provides extra projection and sustain
  • Mahogany neck offers a Low Profile neck with thinner 1-11/16-inch width at the nut
  • Silky smooth ebony fingerboard stands at a 25.4-inch scale length and brandishes 20 frets
  • Ebony bridge, compensated bone saddle, and ebony pickguard
  • Stunning satin nickel Waverly tuners
  • Finished off with a fine silver border around headplate, bridge, fingerboard, and pickguard
  • Includes unique label with Mayer’s signature

Why Buy Your Guitar from Sweetwater?

See how Sweetwater goes to great lengths to give you the very best online guitar buying experience. From our online Guitar Gallery that allows you to see and select the exact instrument you want to our 55-point Inspection process and our in-house guitar techs, we take the guesswork out of buying your next guitar online.

What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.