Scientific Anglers Amplitude Smooth InfinityHalf Size Heavy Line The Amplitude Smooth series of lines are, simply put, the highest performance smooth fly lines in the world. With up to five times less drag and eight times the durability of traditional lines, this will change the way you look at fly line performance. The conventional wisdom in fly fishing is that theres no such thing as a do it all freshwater line. Scientific Anglers have something to say about that. The Amplitude Smooth