The EVANS EC2S Frosted drum head offers an edge control ring mounted under two plies of 7-mil film. The EC2S coated drum heads control vibration instead of eliminating it. It also dampens higher overtones enhances low-end attack and supports a broader tuning range. EC2 Sound Shaping Technology (SST) EVANS improved EC2S drum heads contain their exclusive Sound Shaping Technology (SST). Sound Shaping Technology allows the drumheads to be fully optimized for each individual size by varying the thickness and density of the damping material ensuring greatly improved performance and tone across the entire kit. Unlike other heads that lack SST EVANS EC2Ss contain the ability to balance attack and tone for each size. The result is a drum head series fine-tuned for attack tone length of sustain and ease of tuning. Packed with a more balanced and pre-EQ d sound across the full kit the EC2S with SST will make your toms sound better than you ever thought possible. Here is what the pros are saying: So I just gave the new EC2Ss a test run overseas. They sound great! I used them on a Mapex Orion kit. The new muffling rings are nice! After pounding these for a few shows they stayed focused. - Chris Pennie The new EC2Ss are so incredible! The attack and tone has somehow been magnified. When I m playing these heads the feel definition and tone that I m able to draw out of them is amazing and is so sweet to the ear. - Camille Grainer The new EVANS EC2S SSTs are amazing. My toms sound so warm and lush. These drum heads bring out the true sound of the drums. - Dean Butterworth The best just got better—the new EC2S SST drum heads are incredible! - Preston Heyman The Wolfmen and U.K. Session Supremo