Scientific Angler Amplitude Smooth Trout Standard Floating Fly Line
The Scientific Angler Amplitude Smooth Trout Standard Fly Line is designed to meet AFFTA line weight guidelines. This casting fly line features a mid-length head for excellent mending and accuracy over long distances. It incorporates the revolutionary AST PLUS slickness additive, which enhances casting performance and increases durability. The line is built with a braided multifilament core and includes an improved dry tip for better handling and performance in the field.
| Feature | Description |
|---|---|
| AST PLUS Slickness Additive | Improves casting distance and line durability |
| Mid-Length Head | Enables precise mending and accurate long-distance casts |
| Core Type | Braided multifilament core |
| Dry Tip | Improved dry tip for better tip control and performance |
| Line ID | SA line ID for identification |
FAQ
What makes the AST PLUS slickness additive different from other fly line additives?
The AST PLUS additive enhances casting performance by reducing friction and improving line glide, resulting in longer casts and better durability compared to standard fly line materials.
Is this line suitable for long-distance casting?
Yes, the mid-length head is specifically designed for accurate and consistent long-distance casting, making it ideal for trout fishing in open waters or windy conditions.
Does this line come with a specific weight designation?
Yes, it is a standard trout weight line designed to follow AFFTA guidelines for proper weight matching with fly rods and flies.

Rose Paige –
This line casts smoothly and far with minimal drag. The mid-length head makes mending easy, especially on long stretches. I’ve used it in both stillwater and moving water and it performs consistently. The AST PLUS additive really helps with the glide and durability.
Andrew Kelly –
Great for trout fishing. The dry tip handles well in windy conditions. I noticed less line tangle and better control during casting. It’s a bit heavier than expected for its weight, but the performance is worth it.
Felicity Wilkins –
The casting distance has improved significantly compared to my previous line. The slickness additive makes a noticeable difference. I use it daily and haven’t had any issues with wear or breakage.