Martin Super D-18 Acoustic Guitar – Natural

Martin’s Super-sized Dread Enters the Standard Series

Larger in both size and sound than a traditional dread, the Martin Super D-18 takes Nazareth’s iconic acoustic cannon to new heights of depth and projection. This oversized acoustic guitar boasts 20% more internal air volume than a standard D-18, clocking in with a width of 16.375 inches (as compared to the traditional dread’s 15.625-inch width). The result is an instrument with superior volume potential, enhanced dynamic range, and a chest-rattling bass boom — all without compromising on the timeless Martin dreadnought profile. What’s more, this super-sized dreadnought boasts all the hallmarks of the legendary D-18, including a Sitka spruce top, forward-shifted scalloped X-bracing, and genuine mahogany for the back and sides. Strum an open cowboy chord or flatpick your favorite bluegrass run, and the Super D-18 captures the same crisp clarity and midrange warmth that’s made the D-18 among the most treasured guitars in music history. Plus, you also get a select hardwood neck in Martin’s fast-playing GE Modified Low Oval profile, a premium ebony fingerboard, and old-school open-back nickel tuning machines. After nearly a century’s worth of dreadnought dominance, the Martin Super D-18 is ready to rule as the pinnacle of unplugged power.

One step above a dreadnought

Designed long before the era of acoustic guitar amplification, Martin’s dreadnought guitars were originally engineered to provide guitarists with enough volume to stand against the louder, more powerful instruments in musical ensembles. In fact, Martin’s models had steadily grown larger since the company was founded in 1833, though that trend came to a halt when electricity entered the equation. The Martin Super D body answers a simple question: What if Martin had kept going? As you might expect, the result is an instrument that takes all the sought-after qualities of a Martin dread — thumping acoustic projection, a vast dynamic range, and unparalleled bass response — and makes them even bigger. Whether you’re in an acoustic arms race with the banjo player in your bluegrass band or you simply can’t help but delight in the sound of a chest-rumbling open E chord, the Martin Super D’s unabashedly oversized sound towers above the rest.

Savor the sound of solid mahogany

Offering a warm and punchy voice, the Martin 18-series’ spruce-topped mahogany tone has graced countless recordings in almost every genre and era. Whether you know it or not, you’ve undoubtedly heard a Style 18 Martin before if you have even a passing familiarity with guitar-based music of the 20th century. So, what does it sound like? First off, this towering Super D-18 mirrors the refreshed 2025 D-18 with a Sitka spruce top and GE-scalloped, forward-shifted X-bracing — a much-welcomed change by City Music’s vintage Martin fanatics, as it captures the ultra-responsive feel and rich low-end power that have made Martin’s prewar models among the most sought-after instruments on the planet.

A mahogany back and sides round out the Super D-18 with a tone that strongly favors the fundamental of your note, as opposed to the harmonic-dense voice of the rosewood-clad D-28. These qualities have made the Style 18 Martin one of the most popular and ubiquitous steel-string formulas in history and a longtime favorite of bluegrass pickers, rock strummers, country artists, and every other genre where acoustic guitars reign.

Standard series: revisiting timeless Martin tradition

Considering the storied history of Martin’s acoustic guitar engineering and building practices, there’s no question that the company’s iconic models stand firm as the backbone of American steel-string instrument design. With this sentiment top of mind, Martin presents the refreshed Standard series: a lineup dedicated to reviving the looks and tone of the brand’s golden-era vintage models while introducing a complex set of modern performance enhancements. The result is a comprehensive update to Martin’s most revered range of instruments, combining tonal authenticity with the comfort and versatility of a contemporary instrument. This Super D-18 follows the lead of its more traditional refreshed siblings with responsive GE (Golden Era) bracing, a thinner fingerboard with beveled edges, a slick vintage-style heel, an angled nut, and a GE belly bridge.

Martin Super D-18 Features:

• The inaugural appearance of Martin’s oversized Super D body shape in the Standard series lineup
• Super D body clocks in with a width of 16.375 in. (as compared to the traditional dread’s 15.625-in. width) to deliver a more bass-heavy boom with unmatched acoustic projection
• Sitka spruce top with forward-shifted scalloped GE bracing rings produces a responsive feel and rumbling low-end potential
• Genuine mahogany back and sides offer a focused, midrange-rich punch to balance the bass of the Super D body
• Select hardwood neck in Martin’s fast-playing GE Modified Low Oval profile, finished off with a sleek satin finish
• Ebony fingerboard loaded with Old Style 18 inlays
• Nickel open-gear tuning machines for a touch of retro charm
• 1.75-in. nut width is sure to please players of all styles, whether you’re a fingerpicker, a strummer, or a flatpicker
• Retains all the upgrades of Martin’s refreshed Standard series lineup, including a thinner fingerboard with beveled edges, an angled nut, a vintage-style heel, and pre-war-inspired bracing