EVANS Hydraulic bass drumheads give you the fat, deep, short sound pioneered by rock and roll drummers in the 1970s. Made with a thin layer of oil between two plies of 7 mil film (6.5mil & 7.5mil for Hydraulic Black), these heads not only suppress unwanted overtones, but are also famously easy to tune. Hydraulics have a defined attack, short sustain, and dark tonal character. This bass drumhead also features Level 360 Technology and is available in clear, red, blue, and black.

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 made in the USA and feature Level 360 Technology.

• EVANS Hydraulic drumheads are the only heads on the market with a thin layer of oil between two plies of film to suppress unwanted overtones.
• Known for a fat, deep, short sound reminiscent of early rock n roll.
• This bass batter is available in glass, red, blue, and black.
• All EVANS drumheads feature Level 360 Technology to provide ease of tuning, extended pitch range, and optimum quality of sound.
• EVANS drumheads are designed, engineered, and manufactured in the USA.
• All EVANS drum heads are designed, engineered and manufactured in the USA