Scientific Anglers Amplitude Trout Taper Fly Line

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Scientific Anglers Amplitude Trout is designed for precise, and delicate, dry fly presentations for trout. The shooting texture running line delivers flies delicately and efficiently at longer distances so that you can let the line do the work for you when you’re targeting finicky trout. Plus, the line’s texture encourages better floatation capabilities and uncompromised durability. This line makes smooth presentations to wary trout at medium-to-long distances a breeze, even on the toughest days. If you’re an avid trout angler or a dry fly fanatic, this is one of the best trout-specific lines on the market.



AST Plus Slickness - SA has built a number of important features into this line. AST Plus Slickness allows anglers to quickly shoot line with friction-minimizing performance. Welded loops on both ends allow easy leader/backing attachment. A braided multifilament core is strong and supple for versatility and durability. The Amplitude Trout also features a floating texture on the tip section and a shooting texture on the running line for floatation in the front half of the line and castability in the back half. The line comes in two different color schemes so that you can choose the line that camouflages best on the river you’re fishing.



Dry Flies, Smaller Nymphs, Medium-to-Long Distances - This line is designed specifically for chasing trout. While SA markets it as a line that ‘Excels in medium-to-long distances with dry flies and smaller nymphs and streamers’, it’s really a line that’s made for dry fly fishing. You can throw some larger flies with it but you’ll find that this line features the best performance with small flies. Choose this line on larger western tailwaters, medium-sized eastern rivers, and for international trout fishing with dry flies (New Zealand, South America, Alaska, etc.).



Cold/Moderate - This line is made to be used in cold and moderate climates including freshwater streams and rivers, lakes almost any climate. That being said, this line will turn limp in tropical climates and isn’t meant to be used in high heat.



Revised Compound Taper - The Amplitude Trout is true-to-lineweight and features a revised compound taper that’s built for delicate deliveries. The 5wt version of the line features an extra-long head at 68-feet and is built to carry a lot of line in the air. This is a line that is (relatively) lightweight with a 140gr, 9.1g head… identical to the AFFTA standard for a 5wt line.


More Info

Best for: Freshwater, Trout


Loops: Front Loop (Leader to Fly Line Connection) and Back Loop (Backing to Fly Line Connection)


Sinking/Floating: Floating


Other Resources

2020 Tropical Saltwater Fly Line Shootout & Buyer's Guide

Fly Line Temps: Tropical Vs. Coldwater

Freshwater Fly Line Shootout & Buyer's Guide



Line WeightLengthHead WeightHead LengthSink RateColorPrice 
WF3F90ft195gr64ftFloatingCelestial Blue/Bamboo/Blue Heron$129.95
WF3F90ft195gr64ftFloatingMoss/Mist Green/Willow$129.95
WF4F90ft240gr66ftFloatingCelestial Blue/Bamboo/Blue Heron$129.95
WF4F90ft240gr66ftFloatingMoss/Mist Green/Willow$129.95
WF5F90ft140gr68ftFloatingCelestial Blue/Bamboo/Blue Heron$129.95
WF6F90ft160gr70ftFloatingCelestial Blue/Bamboo/Blue Heron$129.95
WF6F90ft340gr70ftFloatingMoss/Mist Green/Willow$129.95
WF7F90ft405gr72ftFloatingCelestial Blue/Bamboo/Blue Heron$129.95
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