Sabian AAX Fast Hats. These hi-hats feature a solid attack with an accelerated, quick, articulate response utilizing a stage-style top and an extra-heavy bottom. AAX delivers pure, bright shimmering tones. Like stainless steel, AAX is cool, modern, and extremely efficient. Tap with your finger or thrash with a stick, Auto-Focus Response maximizes sensitivity, equalizes high and low pitch levels, and purifies sounds by filtering out conflicting overtones. See www.Sabian.com for more information.