The Evans EMAD Resonant Bass Drum Head gives you complete control over the amount sustain and overtones from your bass drum. The 10-mil ply gives you enhanced pitch focus and attack. Similar to the EMAD batter, a black, noise-free plastic sleeve holds a foam dampening ring around the edge of the microphone port, which helps to put a leash on unwanted overtones. The Evans EMAD Resonant Head gives you versatile sound options without having to stuff your bass drum full of pillows or blankets. Find this USA made head in stock at the Drum Center of Portsmouth