Evans 22-Inch black single-ply bass head with an internal overtone control ring delivers a warm and punchy sound with a controlled, short decay that's ideal for both live and studio application. Evans EQ3 series features 7 mil of single-ply film and is a popular choice for both players and engineers. With an internal overtone control ring, the EQ3 delivers a warm and punchy sound with a controlled, short decay that's ideal for both live and studio application. This model does not have a mic port. For over 40 years, Evans has been a pioneer of drum head manufacturing and design. Known for innovative designs such as EMAD, EC2S, and the Hydraulic series, Evans drum heads are made in the USA in a state of the art manufacturing facility. Acquired in 1996 by D'Addario and Company, the global leader in musical instrument accessories, the Evans brand is synonymous with quality and consistency.