Fully hand-carved, the AV10s Spruce top, Maple neck, back & sides are seasoned & aged 5+ years. Reddish-golden shading with highly flamed back & sides. Solid Ebony 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 towards the instrument, bow and case.