The first series of lines to feature the revolutionary AST PLUS slickness additive, the Amplitude will shoot farther and last longer than any other line on the market. It's slickness down to a science. If you're anything like us, the allure of big fish and big rivers is intoxicating. That's precisely why Scientific Anglers created the Amplitude Anadro. Designed with line control in mind, its extended rear taper allows you to cast a mile, mend with authority, and turn over nearly any rig imaginable - from dredging double nymphs to larger dry-dropper concoctions. Steelhead, salmon, and trout won't know what hit them.