EMAD : Externally Mounted Adjustable Damping. Tailor degrees of damping and attack without removing the head or reaching inside the drum. The EMAD is a 10mil single-ply with two interchangeable damping rings that maximize attack and low-end. The coating adds additional warmth, focus, and depth. Finish: Coated Attack: Adjustable Tone: Very Warm Sustain: Adjustable Feel: Adjustable Durability: High