The Solid Wood Secret

Core-GA Formosan Koa

Core-GA Formosan Koa

Core-GA Formosan Koa

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All Solid Tonewoods, No Compromises

The Core-GA Formosan Koa uses all solid woods to deliver dynamic tone that matures over time. The solid Formosa koa back and sides add rich warmth in the low to mid frequencies with smooth, natural highs, complementing the solid spruce top's natural power and nuance.

Responds to How You Play

The solid Formosan koa's back & sides deliver a wider dynamic range that lets you shape the sound with your touch. Dig in for a bold, projecting tone or play softly for a smooth, refined voice. The solid wood construction means the entire guitar responds to your playing style.

Ready to Amplify, Anywhere

The discreet side-mounted controls and onboard preamp give you a clean acoustic tone on any stage. It’s easy to dial in, with volume and tone controls right at your fingertips.

Solid Materials, No Shortcuts

From the genuine bone nut and saddle to the dovetail neck joint and all-solid woods, every detail on this guitar is built for tone and built to last.

Grand Auditorium Versatility

The GA body shape delivers the best of both worlds – the intimate response of a concert guitar with the projection of a dreadnought. Whether you're fingerpicking intricate passages or strumming full chords, this balanced design adapts to your musical style without fighting you.

Vintage Open-Gear Tuners

Smooth operation with classic aesthetics for precise tuning control.

Rosewood Bridge & Fingerboard

Dense hardwood materials that enhance sustain and playing comfort.

Hand-Scalloped X-Bracing

Traditional bracing technique that maximizes top vibration for enhanced resonance.

Fishman® Presys VT Electronics

Professional-grade preamp with volume and tone controls for reliable amplified performance.
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“To I”, Demo by Sanghyeok Chun

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Support & Documentation

Acoustic guitar manual How to adjust neck truss rod

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Core-GA Formosan Koa

Specifications

Overview

Top Material

 Solid Spruce

Back & Sides Material

 Solid Formosan Koa

Body Shape

 Grand Auditorium

Body Finish

 Semi Gloss

Construction

 Dovetail Neck Joint at 14Fret

Bracing Pattern

 Hand Scalloped X-Bracing

Scale Length

 25.5″ (648mm)

Electronics

 Fishman® Presys VT

Body Binding Material

 Aged White ABS

Rosette

 Black & Aged White ABS

Bridge Material

 Rosewood

Bridge Pin Material

 Black with White dot

Saddle

 Genuine Bone

Neck Material

 Mahogany

Neck Shape

 C Shape

Neck Finish

 Semi Gloss

Nut Material

 Genuine Bone

Nut Width

 1 3/4″ (44.5mm)

Fingerboard Material

 Rosewood

Fingerboard Radius

 15.75″ (R400)

Number of Frets

 20 Frets

Inlay

 N/A

Tuning Machines

 Vintage Open Gear

Strings

 Elixir® Phosphor Bronze
Nanoweb Light 12-53

Colors

 Light Burst Top Semi Gloss (LBSG)
Headstock

Headstock Shape

 Gold Head Shape

Headplate Material

 Black ABS

Head Back Plate Material

 N/A

Headplate Logo Style

 2025 New Cort Logo

Headplate Logo Material

 Mother-of-Pearl

Headplate Inlay Material

 Abalone, Mother-of-Pearl

Head Binding Material

 N/A

Head Purfling Material

 N/A

Headplate Finish

 Semi Gloss

Head Volute

 N/A
Neck

Neck Thickness

 1st Fret: 21.5mm / 8th Fret: 22.0mm

Neck Heel Shape

 Triangle Heel Shape

Neck Heel Cap

 Aged White ABS

Fingerboard Inlay Material

 N/A

Fingerboard Binding Material

 N/A

Fingerboard Purfling Material

 N/A

Truss Rod

 Dual Acting / 4mm Wrench

Fret type

 2.0mm Width

Side Position Mark

 Dot
Body

Sound Port (Hole)

 95mm

Bracing Material

 Spruce

Bridge String Spacing

 54.1mm

Body Purfling Material

 N/A

Back Strip Material

 N/A

Bevel Cut

 N/A

Endpiece Material

 N/A

Cutaway Style

 Venetian
Accessories

Case

 Cort Gigbag

Label

 Paper Label

Pickguard

 N/A