Scientific Anglers Amplitude Smooth Titan GT Fly Line
The first series of lines to feature the revolutionary AST PLUS slickness additive, Amplitude will shoot farther and last longer than any other line on the market. It’s slickness down to a science.
You’ve traveled half way around the world in pursuit of a fish that will test every single piece of your gear, you shouldn’t have to worry about your fly line failing. With our 65lb. Tropical-core design these lines are designed to perform when it counts.
- Features the revolutionary AST Plus slickness additive for superior shooting ability and increased durability
- High-contrast sighter to identify the back of the line when fighting fish on long runs
- Built one size heavy to load quickly and deliver the biggest flies to the furthest distances
| Specification | Detail |
|---|---|
| Weight | 65 lb |
| Core Type | Tropical-core |
| Special Feature | AST PLUS slickness additive |
| Sighter | High-contrast |
FAQ
What makes the AST PLUS additive different from other fly line additives?
The AST PLUS additive provides enhanced slickness, improving shooting distance and durability compared to standard additives.
Is the 65lb tropical-core design suitable for long-distance casting?
Yes, the 65lb tropical-core design is engineered for consistent performance and reliable casting over long distances.
Does the high-contrast sighter help during prolonged fights with fish?
Yes, the high-contrast sighter allows anglers to easily identify the back of the line during long runs, improving control when fighting fish.

Joseph Vaughan –
This fly line performs exceptionally well in long casts. The AST PLUS additive gives it a smooth, consistent shot that travels farther than I expected. The high-contrast sighter is a big help when fighting fish on long runs. I’ve used it in both freshwater and saltwater environments and it holds up well.
Eric Peake –
The line loads quickly and delivers big flies accurately. The tropical-core construction feels strong and reliable. I noticed less line drag during casting and better performance in windy conditions. Great for serious anglers who need consistent performance.
Dominic Roberts –
Solid performance overall. The slickness is noticeable and the line lasts longer than others I’ve tried. The sighter is useful, though not as visible in very bright sunlight. Still, it’s a reliable choice for long-range fishing.
Madeleine Walker –
I’ve been using this line for several months now and it hasn’t shown any signs of wear. The shooting distance is impressive, and it handles heavy fish well. The added durability is a major plus for frequent use.