One of the main selling points of the Martin 00-15 is its tone. The nuances and details will come through well on the Martin 00-15. With choice of either solid sapele or solid genuine mahogany top, back and sides, this guitar will sing with lots of sustain. Such woods tend to emphasize the brightness of an acoustic guitar's sound. The white corian nut will keep everything in place and aid in the sustain of the Martin 00-15. Overall, the reviews of the Martin 00-15 have been very positive, but the common complaint is that it is not particularly loud, and lacks in the bass end.