Evans black EQ3 resonant series features a single ply of 10mil film and an offset 5 microphone port. The EQ3 series offers a warm and punchy sound with a controlled short decay that s ideal for both live and studio applications. For over 60 years Evans has been an innovator in drumhead manufacturing and design. As the creator of the first synthetic drumhead and other revolutionary products such as EMAD Hydraulics and the UV1 series Evans drumheads are designed with the intent of solving problems for drummers. Regarded for high quality and consistency all Evans drumheads are and feature Level 360 Technology.