Martin HD-28-KOA-CS – Custom Shop – Premium Grade Koa (#3012669)

*Photos shown are of the actual guitar. Serial Number 3012669.

This Martin HD-28 Custom Shop re-imagines a bluegrass icon by pairing its traditional herringbone appointments with the exotic visual depth of premium broad figure Koa. By replacing the standard spruce and rosewood with all-solid Koa on the top, back, and sides, this instrument delivers a unique voice that blends the powerful projection of a dreadnought with a sweet, shimmering mid-range focus. The construction is anchored by forward-shifted Golden Era scalloped bracing, allowing the top to vibrate freely for maximum responsiveness and volume. Elegant details like the diamond volute, Style 42 snowflake inlays, and zig-zag purfling underscore its status as a true “one-of-one” collector’s piece. It offers the discerning player a rare combination of historic Martin reliability and the distinctive, heirloom-quality beauty of fine Hawaiian wood.

• CASE/GIG BAG: Hardshell Case Included.

Setup & Service

Complimentary Professional Setup & Install Service Available Upon Request (Over $210 Value):

• Custom Setup: Our tech will adjust the action, intonation, and relief to your specifications.

• Professional Pickup Installation Service: Want to amplify this beauty? We will professionally install the pickup system of your choice free of charge.

How it works: Simply add the pickup you want to your cart (or supply your own), and we provide the labor at zero cost.

Please Note: This offer covers the professional installation labor only; the pickup hardware itself is sold separately. 

Please email us for more details: [email protected]

Specs

BODY

• Orientation: Right Handed
• Neck Joint: Dovetail
• Adhesive: Modern Adhesive
• Cutaway: No
• Electronics: None

TOP

• Material: Exceptional Broad Figure Koa (Premium Grade)
• Bracing Material: Spruce
• Bracing Pattern: X Brace – Forward Shifted
• Bracing Style: Scalloped, Golden Era, 3-A DOMLE
• Binding: Antique White
• Rosette: Style 28 Boltaron
• Pearl Inlay: None
• Pickguard: Faux Tortoise, Pattern 1B

BACK AND SIDES

• Material: Exceptional Broad Figure Koa (Premium Grade)
• Purfling: HD Zig Zag W/Thick Black Strips
• Center Strip: Spanish Cedar
• Bracing: Spruce
• Endpiece: Antique White

NECK AND HEADSTOCK

• Neck Material: 12/4 Genuine Mahogany
• Neck Profile: GE (Golden Era) Modified Low Oval
• Neck Taper: High Performance Taper
• Headstock: Solid with Square Taper and Diamond Volute
• Headplate Material: Exceptional Broad Figure Koa (Premium Grade)
• Headplate Inlay: CFM Block in Select Abalone
• Tuning Machines: Grover Nickel V97-18NA StaTite 18:1 (Vintage Button)

FINGERBOARD

• Material: Black Ebony (Grade 3)
• Scale Length: 25.4″ (Compensated: 25.470″)
• Radius: 16″
• Width at Nut: 1 3/4″
• Width at 12th Fret: 2 1/8″
• Inlay: Style 42 Snowflake (Short) in Select Abalone
• Frets: 20 Total, Standard Wire
• Nut Material: Bone (Angled)

FINISH

• Type: Standard
• Package: Gloss Body w/ Satin Neck and Polished Headplate
• Top Color: Clear
• Body/Neck Filler: Rosewood

BRIDGE AND HARDWARE

• Bridge Material: Black Ebony
• Bridge Style: GE Modern Belly
• Saddle: Compensated Bone, Drop-in
• Bridge Pins: Bone w/ Faux Tortoise
• Strings: Authentic Acoustic Lifespan 2.0 (Medium Gauge)
• Case: Molded Hardshell