The Evans EMAD Coated Drumhead combines a 10-mil single-ply coated film with the EMAD (Externally Mounted Adjustable Damping) damping system and delivers excellent punch, low end, and power. Unparalleled in the industry, the EMAD system lets you adjust the attack and focus of your bass drum sound quickly and easily without having to detune tension rods. Drummersonly drummers feel that this drumhead is the perfect choice for heavy hitters who want solid sound and long head life — but prefer the feel of a single-ply drumhead. The Evans EMAD Coated Drumhead provides more low register and attack while perfectly complementing the look and sound of your other Evans heads.