The revolutionary Mapex Halo Mount is a lateral, unique "under lug-line" suspension system that unlocks the freedom of full resonance and allows the drum to sing with an open, pure tone. The Adjustment Knob acts as a built-in Equalizer that can slightly dampen the resonance of the shell, producing a tighter and quicker decay. Whether you like to go dry in a jazz gig, or sound huge in a packed arena, the Saturn Evolution has the whole package for you. First introduced as a special edition in 2012, the Birch/Walnut hybrid shell has made its return to the Saturn Evolution line with Design Lab features. The new shell formula perfectly combines the sonic characteristics of walnut with articulate punch of birch, delivering a Dark, Punchy, Dry sound. The birch toms deliver clear and punchy sounds in the high register while the maple kick produces a warm, round tone in the low end. The result is a redefined sonic identity that speaks to today's music scene. Plies get progressively thicker, depths graduate by 1/2", and bearing edges change as the drums get larger in diameter. The combination of all of these details creates an amazing symphony in one kit.