Mellow, warm full sound.Mellow, warm full sound.Super-2? Drumheads ?A New Kind Of Two Ply Head?: They have great attack, projection and depth unlike any other drumheads. The patented Safe-T-Loc hoop prevents the head from slipping and the Sound Curve collar design provides ?Responsive Tuning.? With Responsive Tuning, one turn of the drum key and Super-2? heads react. Made with a 7 mil ply and 5 mil ply configuration.