Sabian 11806XEB HHX Evolution Crash Cymbal 18 Inch Overview: The warm, explosive response is fast and shimmering, for increased cut and projection. Sabian HHX Evolution cymbals are designed to reflect the playing of Dave Weckl. with groove, power, dynamics and touch. HHX Evolution has an innovative Total Response design that allows the cymbals to practically play themselves. With the HHX Evolution, you don't have to think, you just play.