Evans? EC2? series features two plies of 7mil film with optimized attack, tone, length of sustain and ease of tuning for each size head. The Sound Shaping Technology (SST?) Edge Control ring mounted on the underside delivers an extremely well balanced and pre-EQ'd sound across the full kit by varying the size of the ring for each different head size. The Frosted coating increases low-end response and attack.
All Evans drum heads are designed, engineered and manufactured in the USA.