Another Evans exclusive, Hydraulic heads are heavy-duty, twin-ply drumheads that have an oil-filling between the two plies to greatly reduce drum resonance and, at the same time, emphasize the fundamental and lower overtones of the drum.
The oil acts a a natural muffler to decrease the sustain and increase attack without affecting the feel of the head, as internal and external mufflers often do. They have a solid attack and a controlled, quick sustain, and are best suited for rock.

MPN: TT16HBG

Developed as an alternative to uneven and inconsistent methods of internal and external drumhead muffling, Hydraulic heads have a dark, controlled tone coupled with good stick response and excellent durability; making them suitable for many studio recording and closely mic'd live playing situations.

Features:
Two ply
Oil filled
Fat, wet sound
Dry, short sustain
Great for general use, rock, live, or studio
Black