Fully hand-carved, the AV20's spruce top, maple neck, back and sides are seasoned and aged 5+ years. Produces a rich and sweet, yet powerful sound. Reddish-golden shading with highly flamed back and sides. Solid boxwood fittings. Thomastik Dominant strings. Shop adjusted by Yamaha-trained professionals to meet and exceed MENC standards. A Yamaha 5-year warranty covers any workmanship issues.