The Evans EMAD Onyx bass drumhead combines a 10mil single-ply film with the EMAD damping system, which delivers excellent punch, low end, and power. The EMAD (Externally Mounted Adjustable Damping) system lets you adjust the attack and focus of your bass drum sound quickly and easily. This version of the EMAD uses the Onyx bass head that perfectly complements the look and sound of your other Onyx heads.

Evans™ EMAD™ series features a single ply of 10mil film providing an ideal balance of punch, power and low-end. The unparalleled industry standard Externally Mounted Adjustable Damping (EMAD) system allows the player to adjust attack and focus. The Onyx™ version is the perfect aesthetic and sonic compliment to the Onyx tom heads and Onyx bass resonant.