The Genera Dry is a single ply head with a control ring on the underside. In addition, there are vents around the perimeter of the head which reduces sustain and overtone. The head is coated.
The clear Evans EMAD Bass Batter is a very popular dark, low pitched head. It is single ply with lots of punch. The external dampening system on the head is adjustable for attack and focus. Excellent Rock and R&B quality.
A single ply thick head, the EQ 4 has an internal control ring and a removable muffle ring. The dry vents around the perimeter give it a very focused, low end tone.
The EMAD Onyx is a thick single ply head with a dampening system which allows the player to adjust the attach and focus of the drum sound. It is black, has lots of punch and very good low end.
Because of the feel and sound of the Strata heads, many Concert snare drummers have found them to be adaptable for wide usage. They are extremely articulate and hold their tuning well. The "Staccato 700" version has been especially popular.