Yamaha Maple Custom — The elder of Yamaha's Maple drums lines. The company's professed Flagship Maple Drum kit, featuring 100% Maple wood, and the "Yamaha Enhanced Sustain System" (YESS) which mounts the drum at its nodal point, a technique developed by Noble and Cooley. Maple is perhaps the most widely used wood in drum construction, rivaled only by Birch. Maple is desirable for producing a warm tone, full sustain, and outstanding projection. Toms are 7 plies thick, while the bass drums are 10, making it exceedingly heavy in the opinion of some reviewers. The series is easily recognized by the pairing of square brass lugs and steel hoops, the only of Yamaha's lines to do so.