Head to head
Cort Core-GA Formosan Koa vs Yamaha JR
The verdict
The Cort Core-GA Formosan Koa and Yamaha JR are closely matched overall — 69 to 70 on our estimated score.
Estimated from specs & owner reviews — a starting point, not a substitute for playing both.
Cort Core-GA Formosan Koa wins on
- Better playability (72 vs 64)
- Better sound (68 vs 60)
Yamaha JR wins on
- Better build (84 vs 67)
Scorecard
| Metric | Core-GA Formosan Koa | JR |
|---|---|---|
| Overall | 69 | 70 |
| Build | 67 | 84 |
| Playability | 72 | 64 |
| Sound | 68 | 60 |
| Value | 69 | 69 |
Full specifications
| Spec | Core-GA Formosan Koa | JR |
|---|---|---|
| Brand | Cort | Yamaha |
| Type | Acoustic-Electric | Acoustic-Electric |
| Years | — | — |
| Country | — | JP |
| Body wood | Solid Formosan Koa | Mahogany Pattern UTF (Ultra-Thin Film) |
| Neck wood | Mahogany | Locally-Sourced Tonewood** |
| Fretboard | Rosewood | Rosewood |
| Strings | 6 | 6 |
| Frets | 20 | — |
| Scale | 25.51" | 21.26" |
| Pickups | Fishman® Presys VT | None |
| Rating | — | — |
| Price | — | — |
| Back Sides Material | Solid Formosan Koa | — |
| Back Strip Material | N/A | — |
| Bevel Cut | N/A | — |
| Body Binding Material | Aged White ABS | — |
| Body Finish | Semi Gloss | Gloss |
| Body Purfling Material | N/A | — |
| Body shape | Grand Auditorium | Compact Traditional Western |
| Bracing Material | Spruce | — |
| Bracing Pattern | Hand Scalloped X-Bracing | — |
| Bridge Material | Rosewood | Rosewood |
| Bridge Pin Material | Black with White dot | — |
| Bridge String Spacing | 54.1mm | — |
| Case | Cort Gigbag | Gig Bag |
| Colors | Light Burst Top Semi Gloss (LBSG) | — |
| Construction | Dovetail Neck Joint at 14Fret | — |
| Controls | Fishman® Presys VT | None |
| Cutaway Style | Venetian | — |
| Endpiece Material | N/A | — |
| Fingerboard Binding Material | N/A | — |
| Fingerboard Inlay Material | N/A | — |
| Fingerboard Purfling Material | N/A | — |
| Fretboard radius | 15.75″ (R400) | R400 mm (15 3/4") |
| Fret Type | 2.0mm Width | — |
| Head Back Plate Material | N/A | — |
| Head Binding Material | N/A | — |
| Headplate Finish | Semi Gloss | — |
| Headplate Inlay Material | Abalone, Mother-of-Pearl | — |
| Headplate Logo Material | Mother-of-Pearl | — |
| Headplate Logo Style | 2025 New Cort Logo | — |
| Headplate Material | Black ABS | — |
| Head Purfling Material | N/A | — |
| Headstock Shape | Gold Head Shape | — |
| Head Volute | N/A | — |
| Inlay | N/A | — |
| Label | Paper Label | — |
| Neck Finish | Semi Gloss | Matte |
| Neck Heel Cap | Aged White ABS | — |
| Neck Heel Shape | Triangle Heel Shape | — |
| Neck profile | C Shape | — |
| Neck Thickness | 1st Fret: 21.5mm / 8th Fret: 22.0mm | — |
| Nut | Genuine Bone | Urea |
| Nut width | 1 3/4″ (44.5mm) | 43 mm (1 11/16”) |
| Pickguard | N/A | Tortoise Pattern |
| Rosette | Black & Aged White ABS | — |
| Saddle | Genuine Bone | — |
| Scale length | 25.5″ (648mm) | 540 mm (21 1/4") |
| Side Position Mark | Dot | — |
| Sound Port Hole | 95mm | — |
| Top Material | Solid Spruce | Spruce |
| Truss rod | Dual Acting / 4mm Wrench | — |
| Tuners | Vintage Open Gear | Covered Chrome |
| Accessories | — | Hex Wrench |
| Back Material | — | Mahogany Pattern UTF (Ultra-Thin Film) |
| Body Binding | — | Black |
| Body Depth | — | 80-90 mm (3 1/8" - 3 9/16") |
| Body Length | — | 389 mm (15 5/16") |
| Body Width | — | 317 mm (12 1/2") |
| Bridge Pins | — | Black ABS with White Dot |
| Connections | — | None |
| Saddle Material | — | Urea |
| Side Material | — | Mahogany Pattern UTF (Ultra-Thin Film) |
| Sound Hole Inlay | — | Black |
| String Spacing | — | 10 mm |
| Total Length | — | 845 mm (33 1/4") |