A controlled sound but with resonance and sensitivity at all tuning and dynamic ranges EC Snare head combines two-plies of film (6.5mil external 10mil internal) with Evan s Edge Control technology to eliminate the mid-range frequencies that muddy up the mix leaving crisp highs and deep lows. The reverse dot version lends added durability and accentuated attack without choking the overall sound. From the Manufacturer EC Reverse Dot Snare Series Overview Evans EC snare heads feature two plies of film. The combination of a 7mil top ply and a 10mil bottom provides a controlled sound but with resonance and sensitivity at all tuning and dynamic ranges. Sound Shaping Technology (SST) rings on the underside reduce unwanted frequencies and enhances attack. The Reverse Dot lends extra durability focus and attack in the center. The revolutionary Evans Level 360 drum head technology is found in the proprietary collar design that extends the level playing surface of the drum head 360 degrees around the drum. This vertically enhanced collar design ensures balanced contact with the critical bearing edge of the drum shell resulting in: Ease of fit Ease of tuning Extended tuning range and quality of sound Available on all Evans 6 20 inch Batter and Resonant Drum set Snare Side Concert and Marching Tenor heads. Evans Level 360 technology solves the age-old dilemma of traditional synthetic heads consistently not fitting a variety of drum shells without using force that chokes the responsiveness of the head and the drums performance. The Level 360 Blueprint The benefits provided by Evans Level 360 technology stem from a groundbreaking collar design: Steeper Collar:Extends the level plane of the drum head to ensure balanced contact with the critical bearing edge of the drum shell. Roll-over Hoop:Provides strength and stability where the film meets the hoop for greater durability without diminishing performance. Balanced Contact:For ease of tuning and enhanced quality of sound. Greater Tonal Range:Wider tuning options result in higher levels of responsivness and resonance giving you the confidence to tune your drums high or low.