The Evans EMAD Onyx bass drum head gives you unprecedented control over the amount sustain and overtones from your bass drum. Punchy and extremely versatile, the black 10-mil single ply head gives you bright attack while providing low-end thud that is ideal across a range of drumming styles. The EMAD Onyx Bass Drum Head comes with two different-sized acoustic foam dampening rings which can be quickly mounted to the front of the drumhead. This gives you completely customizable control over your sustain, and is essentially like having three bass drum heads in one! Proudly made in the USA, the Evans EMAD Onyx head gives you a huge amount of sound options without having to stuff your bass drum full of pillows or blankets.