Sabian's AAX Xcelerator Hi-Hat Cymbals are bright. 'Auto-Focus Response' ensures crisp, accurate sounds, while 'airwave' bottom eliminates air lock for maximum clarity. Sabian Brilliant finish cymbals are highly buffed and preserved under a clear protective lacquer coating.Sabian AAX cymbals deliver pure, bright shimmering tones. Like stainless steel, AAX is cool, modern, and extremely efficient. With its streamlined design and sound-shaping Auto-Focus Response feature, AAX is the ultimate breakthrough in modern cymbal making. Tap with your finger or thrash with a stick, Auto-Focus Response maximizes sensitivity, equalizes high & low pitch levels, and purifies sounds by filtering out conflicting overtones. AAX cymbals deliver the freedom to sound great in any music style.