Scientific Anglers Amplitude Textured Infinity Salt Fly LineThe Go To Line For All Saltwater Species The first series of lines to feature the revolutionary AST PLUS slickness additive, the Amplitude series will shoot farther and last longer than any other line on the market. Its slickness down to a science. The Infinity Salt is technical, versatile, accurate and simply the most advanced saltwater line available. Featuring the revolutionary AST Plus slickness additive for superior shooting ability and increased