Scientific Anglers Amplitude Smooth Trout

Introducing the Scientific Anglers Amplitude Smooth Trout Fly Line, the highest performance and smoothest fly line range on the market. Designed to have up to 5 times less drag and 8 times the durability of traditional line these truly are a must have for the trout fishing enthusiast!

Featuring an AST Plus coating — a slickness additive built into the entire fly line coating, not just applied to the surface like many other brands. This ensures better shoot-ability and you need to constantly clean or dress the line to maintain performance. AST Plus stays in the line, so you get consistent float, mending, and pickup.

Roll casts snap into place, pick-ups from slack water are clean, and distance control is drastically improved. It’s the difference between watching your fly drift perfectly... and watching your cast fall short on that riser 45 feet out.

The elongated front taper is a delicately extended front taper that gradually transfers energy to your leader without a sudden drop-off. Creates soft, feather-light presentations — crucial when casting to trout feeding on tiny dries. It also allows precise energy control for long leaders (12–15ft+), without sacrificing turnover and prevents line "kick" — ideal when fishing with light tippet like 6X or 7X.

Unlike many modern fly lines that are half to a full weight heavy, the Amplitude Smooth Trout stays true to AFFTA grain standards. This makes it an ideal match for moderate to slow-action rods. This design also maintains smooth loading and controlled loop formation rather than forcing the rod to flex too deeply or too quickly.

The internal core of the Amplitude Smooth Trout line is made of braided multifilament nylon, offering strength, suppleness, and consistent diameter. It also offers smooth energy transfer throughout the cast and maintains low stretch for better feel and hooksets.

The Scientific Anglers Amplitude Smooth Trout comes in a Celestial Blue / Bamboo / Blue Heron is available in a range of line ratings for you to choose from in our drop down menu.

Key features:
Features the revolutionary AST Plus slickness additive for superior shooting ability and increased durability
Excels in medium-to-long distances with dry flies and smaller nymphs; wonderful on glass and bamboo
The best smooth, true-to-grain-weight line for casting small dry flies to picky risers
Designed specifically for chasing trout; also useful for grayling and panfish
Elongated front taper is designed for delicate presentations
For use in moderate and cold climates
Braided multifilament core