Evans Hydraulic Glass Drum Head, 20 Inch General Musical Instruments the KH 420's neutral frequency

the KH 420's neutral frequency response maintains clarity in every detail

1 speaker output

High gain before feedback

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50/60 Hz (T 3

Evans Hydraulic Glass Drum Head, 20 Inch General Musical Instruments the KH 420's neutral frequencyEvans clear Hydraulic series features a thin film of oil between two plies of thin film offering maximum durability, a fat, deep and short sound pioneered by early 70's rock and roll. Hydraulics are famously easy to tune, making them a perfect fix for troublesome drums and players with little tuning experience. Evans Level 360 technology is incorporated to extend the level playing surface of the drumhead, 360 degrees around the drum. The vertically