Yamaha A4KII Limited Edition Solid Koa Acoustic/Electric - NaturalCrafted from all solid koa, the A4K features the A Series cutaway western body, double line abalone inlays, unique black tuning machine keys together with specially recorded mic models on the SRT preamp for plugged in tone that matches the acoustic sound. Traditional western body cutaway Solid Hawaiian koa top Solid Hawaiian koa back and sides New scalloped bracing for louder, richer sound Natural, dynamic, plugged in sound by the SRT2 system Double