Martin Custom Shop Limited Edition O'ahu K-42 Koa/Sitka Spruce Acoustic Guitar - Dark Toasted Burst

Own a Rare Island-Inspired Masterpiece - The Martin Custom Shop Limited Edition O'ahu K-42 Koa/Sitka Spruce Acoustic Guitar in Dark Toasted Burst

The Martin Custom Shop is where tradition, artistry, and precision come together to create exceptional, one-of-a-kind instruments. Crafted by skilled luthiers using premium tonewoods and time-honored techniques, each guitar is built to deliver outstanding tone, playability, and visual beauty. Designed for discerning players and collectors alike, Martin Custom Shop guitars embody Martin’s legendary heritage while offering personalized craftsmanship at the highest level.

SPECIFICATIONS

Body

• Back and Side Finish: Gloss
• Back and Sides Color: Natural
• Back Detail: None
• Back Inlay Material: Multi-Stripe
• Back Material: Figured Koa
• Back Purfling/Strip: Style 45 Golden Era with Stripe
• Binding: Madagascar Rosewood
• Body Size: K-12 Fret with 14 Fret Neck
• Brace Material: Adirondack Spruce with VTS
• Brace Shape: GE-Scalloped
• Brace Size: 5/16"
• Bracing Pattern: X Brace
• Bridge Material: Ebony
• Bridge String Spacing: 2 5/32"
• Bridge Style: Modern Belly Pyramid- Drop in Saddle
• Construction: Dovetail Neck Joint
• Endpiece: Madagascar Rosewood
• Endpiece Inlay: Multi-Stripe
• Finish Top: Gloss
• Rosette: Style 45 Multi-Stripe
• Saddle: Bone
• Saddle Radius: 16"
• Side Material: Figured Koa
• Top Color: Dark Toasted Burst
• Top Detail: None
• Top Inlay Material: Abalone with Multi-Stripe
• Top Material: Sitka Spruce Reclaimed

Neck

• Fingerboard Binding Material: None
• Fingerboard Inlay Material: None
• Fingerboard Inlay Style: Hibiscus Design
• Fingerboard Material: Ebony
• Fingerboard Width at 12th Fret: 2 1/8"
• Fingerboard Width at Nut: 1 3/4''
• Finish Neck: Gloss
• Headplate Binding Material: None
• Headplate Logo Style: Martin O'ahu Script Overlay (Back of Headstock)
• Headplate Material: Ebony
• Headstock Shape: Solid with Square Taper and Diamond
• Heelcap: Madagascar Rosewood with Multi-Stripe
• Neck Color: Natural
• Neck Joins Body At: 14th Fret
• Neck Material: Genuine Mahogany
• Neck Shape: GE Modified Low Oval
• Neck Taper: High Performance Taper
• Number of Frets Total: 20
• Nut Material: Bone
• Scale Length: 25.4"
• Side Detail: None
• Side Dots: Abalone
• Side Inlay Material: Multi-Stripe

Hardware

• Bridge Pin Dots: Abalone
• Bridge Pin Material: Liquidmetal
• Knob: Butterbean
• Pickguard: Faux Tortoise
• Pickguard Inlay: None
• Tuning Machines: Waverly Gold w/Liquidmetal Post w/Abalone Dot

Miscellaneous

• Case: Hardshell

Manufacturer: C. F. Martin & Co.
Model: MARTIN O'AHU K-42 HIBISCUS
SKU: I875835-N-1-WHXA
UPC: 729789657266

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.