The Evans GMAD bass drumhead is slightly thicker than the regular EMAD, but still punchy and extremely versatile – giving you great control over the amount sustain and overtones, and providing a nice deep thud.
Made with a single ply of 12mil clear film, the Evans GMAD is a little more durable and gives more low-end than the 10mil EMAD, while keeping most of the responsiveness and sustain of a 1-ply drumhead. It comes with two different acoustic foam dampening rings (one narrow and one wide), which can be quickly mounted to the front of the drumhead – allowing great control without needing to remove the head. Without the dampening rings, the GMAD gives a nice sustain. Add the rings to remove overtones and focus the sustain more towards the mid and deep low-end. With the thickest ring, the sound becomes very short, deep, and punchy. The clear GMAD gives a slightly bright attack and deep thud that will cut through even in loud environments. This is a great choice if you like the feel and sound of single ply drumheads, but need a little more durability.