Overview: A dense tropical hardwood, koa blends midrange focus with extra top-end brightness and chime. The more a koa guitar is played and opens up — especially an all-koa guitar — the more its midrange overtones add warmth and sweetness to its voice.

Origin:  Hawaii

Sound: Koa's tone profile blends the midrange of mahogany with the top end of maple. Due to its density, a new koa guitar tends to start out sounding a little bright and tight, somewhat like maple. But the more a koa guitar is played, the more the sound opens up, expanding the midrange and rewarding the player with a richer, sweeter, more resonant tone. A common mistake is when a bright player buys a koa guitar in part for its visual beauty, finds it to be too bright, and doesn't play it enough to allow the wood to warm up.

Goes Well With: Fingerstylists who play more with the pads of their fingers and tend to have a meatier touch. Bright players may want to experiment with different pick materials to produce a warmer tone.