Scientific Anglers Amplitude Smooth Infinity Salt
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.
The Infinity Salt is technical, versatile, accurate and simply the most advanced saltwater line available. Featuring the revolutionary AST Plus slickness additive for superior shooting ability and increased durability, the Infinity Salt will handle the most rigorous of conditions year after year. The Infinity Salt is a half line weight heavy to turn over any fly on even the windiest of days. The extended head length makes it more accurate than short shooting heads so that you can land your fly to spooky fish in the most efficient manner.
| Specification | Value |
|---|---|
| Line Type | Smooth Fly Line |
| Weight | Half Line Weight |
| Drag Reduction | Up to five times less drag |
| Durability | Eight times more durable than traditional lines |
| Special Feature | AST Plus Slickness Additive |
| Use Environment | Saline Water Conditions |
FAQ
What makes the Infinity Salt different from other saltwater fly lines?
The Infinity Salt features the AST Plus slickness additive, which provides superior shooting ability and increased durability. It also has a half line weight design and extended head length for improved accuracy and performance in windy conditions.
Is the Infinity Salt suitable for all types of saltwater fishing?
Yes, the Infinity Salt is designed for technical, versatile use in saltwater environments and performs well under rigorous conditions.
How does the drag reduction benefit fishing performance?
With up to five times less drag, the line allows for smoother casting and better fly control, especially in windy or challenging conditions.


Rachel Ross –
I’ve used this line for several seasons now and it’s held up exceptionally well in saltwater. The casting is smooth and accurate, even in strong winds. The durability is impressive and I haven’t had to replace it yet.
Michael Davidson –
The AST Plus additive makes a noticeable difference in how the line shoots. I can cast longer distances with better precision. It’s a game-changer for offshore fishing.
Karen Jones –
Solid performance in saltwater conditions. A bit heavier than I expected, but it handles well and keeps its shape after repeated use. Slight improvement in accuracy compared to my previous line.
Melanie Hill –
After switching to the Infinity Salt, I’ve noticed a significant reduction in drag. My casts are smoother and more consistent, especially when targeting deep-water fish.