Scientific Anglers Amplitude Smooth Trout GP Fly Line
The Amplitude Smooth series of lines are, simply put, the highest-performance smooth fly lines in the world. With up to five times less drag and eight times the durability of traditional lines, this will change the way you look at fly line performance.
- Features the revolutionary AST Plus slickness additive for superior shooting ability and increased durability
- Mid-length head for exceptional mending and accuracy at distance
- Braided multifilament core
- Casters line
| Specification | Value |
|---|---|
| Line Type | Smooth Fly Line |
| Core Type | Braided Multifilament |
| Head Length | Mid-Length |
| Performance Feature | AST Plus Slickness Additive |
| Drag Reduction | Up to five times less drag |
| Durability | Eight times more durable than traditional lines |
FAQ
What makes the AST Plus slickness additive different from other additives?
The AST Plus additive enhances shooting performance and increases line durability by reducing friction during casting and improving surface smoothness.
Is this line suitable for long-distance casting?
Yes, the mid-length head provides excellent mending and accuracy at distance, making it ideal for long casts.
What type of fishing is best suited for this fly line?
This line is optimized for trout fishing and other applications requiring smooth, accurate casts with minimal drag.



Nathan Edmunds –
This fly line casts smoothly and feels much lighter than previous models I’ve used. The mending is precise and the line holds up well after repeated use in wet conditions. Great for trout fishing in remote streams.
Ian Brown –
The AST Plus additive makes a noticeable difference in how the line shoots. I can cast longer distances with better control and less effort. The durability has exceeded my expectations.
Dominic Roberts –
I’ve used several fly lines over the years, and this one stands out for its smooth performance. The mid-length head helps with accuracy when targeting moving trout in open water.
Molly Martin –
After a week of fishing in rain and wind, the line still looks and performs as expected. No fraying or wear, which is impressive for a line with such high performance claims.