Evans Eq3 Resonant Black Bass Drum Head, 22 Inch. Product Description A 7mil resonant head with an offset 5" microphone port and 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 applications. From the Manufacturer Evans 22" 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. The 5" offset mic port features a plastic sleeve, focuses pitch and enhances the attach while providing protection for the 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. 22" resonant drum head made using a single ply of 7mil film A fixed, internal overtone control ring is made to be microphone friendly, from the studio to arena The 5" offset mic port features a plastic sleeve focuses pitch and enhances the attach while providing protection for the port Available in a frosted, onyx, smooth white and coated white version All Evans drum heads are designed, engineered and manufactured in the USA