This is an extremely shallow, low cup-volume mouthpiece. The rim is wide and very round and soft, for extra comfort. The entrance to the throat is rounded, which allows plenty of air flow for a nice big sound. Slotting is excellent. Customers that have played the Lightning have described it as feeling similar to some of the smaller Warburton pieces, like Shoop and Odneal. It is not a copy of either of these but has a similar rim and cup. The Lightning has the Legends enhanced throat (#27), enhanced throat cylinder length, and Legends S backbore. It’s well suited for extreme upper register work and extended upper register playing. Use this piece when you really want to zap those upper register riffs!