Evans Drumhead Harnesses the Big, Fat Tone of the '70s If you're a fan of that deep, fat drum tone of early 1970s classic rock, the Hydraulic Glass Bass Drumhead from Evans can take you back in time. This innovative drumhead features two plies with a thin layer of oil between them and projects a thick, full tone with short sustain that really punches through the mix. This head is also very easy to tune, making it ideal for beginning players with minimal intonation experience. Lots of drummers here at Sweetwater love the Hydraulic Glass Bass Drumhead for that one-of-a-kind tone it delivers.
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