Evans GMAD Clear Bass Drum Heads are designed for heavy players who still like the feel of a single ply head. Made with one ply of 12-mil film, this head is able to suffer a beating while still giving you a solid, responsive head that isn't completely dry.
The Externally Mounted Adjustable Damping system - or EMAD - affects how much attack and resonance the head produces without having to remove the head itself. Think of it like a circular pillow.
