Deceptively simple.
The EVANS Min-EMAD Tom and Snare Dampener attaches with Velcro dots to both the drum head and rim to control overtones by controlling head vibration. The dampener consists of a fabric bridge linking the resonant head with an inert metal counterhoop. Use of the EVANS dampener produces a focused, unchoked tone. Attach close to the rim for minimal dampening; away from the rim for increased dampening.