The Evans EC2 drum heads have been completely renewed.
New is the Sound Shaping Technology. Due to this new technology the EC2
SST heads feature a new muffle ring. It doesn't just look better, it also
sounds much better.
Due to this new technology the ring thickness and density are
much more consistent for each size drum head. Also the sound is much more
controlled or "pre-EQ'd" as Evans calls it.
