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Scientific Anglers
Amplitude Smooth Anadro Taper Fly Line

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Amplitude Smooth Anadro Taper Fly Line

Designed for nymphing in slow-moving streams and large open lakes, the Scientific Anglers Amplitude Smooth Anadro Taper Fly Line is one of the highest-performing smooth lines on the market. It has improved durability and reduced drag compared to traditional smooth lines—in part thanks to the AST Plus additive that ensures better performance on the water. The Amplitude features a weight-forward design which helps load your rod, and an extended rear taper that makes mending and controlling the line easier, even with indicator, double, and dropper fly rigs. Scientific Anglers recommends purchasing the line weight that corresponds with your rod, as the Amplitude is already overweighted by 1.5 sizes to help turn over large, air-resistant flies.


  • Smooth, nymphing line for rivers and stillwater
  • AST Plus additive increases slickness and durability
  • Weight-forward design loads the rod
  • Long rear taper extends line control
  • Overweighted by 1.5 sizes for larger flies
  • Welded loops for hassle-free rigging
  • Item #SAS003S
Overall Length
Fly Line Style
Taper Design
Anadro (weight-forward)
Running Line
Recommended Use
river fishing, stillwater fishing