The Yamaha PHX High-End Acoustic Drums have a 11-ply hybrid shell construction for long-lasting use. Equipped with a sturdy ply in the center, jatoba, four plies, and kapur, these drums deliver good-quality sound. Each drum uses either maple or burled ash as its outer half-ply that results in a powerful output. These drums have a 30-degree bearing edge with a different profile. Their small toms are rounded for warmth and sustain, floor toms are slightly less rounded, while bass drums are sharper for attack and shorter sustain. The new lug is fixed on a square hook, which holds the tension rod vertically and does not require both hands while tuning the drum.