Scientific Anglers Amplitude Smooth Infinity Salt Fly Line
The Amplitude Smooth series offers the highest-performance smooth fly lines available, delivering up to five times less drag and eight times the durability of traditional lines.
The Infinity Salt is a technically advanced, versatile, and accurate saltwater fly line designed for demanding conditions. It features the revolutionary AST Plus slickness additive, which enhances shooting performance and increases durability.
Designed as a half-line weight, the Infinity Salt provides excellent turnover performance, even in windy conditions. Its extended head length improves accuracy, allowing precise fly placement for targeting spooky fish.
| Feature | Specification |
|---|---|
| Drag Reduction | Up to five times less drag than traditional lines |
| Durability | Eight times more durable than traditional lines |
| Line Type | Smooth fly line, half-line weight |
| Special Technology | AST Plus slickness additive |
| Best For | Saltwater fishing, windy conditions |
FAQ
What makes the Infinity Salt different from other saltwater fly lines?
The Infinity Salt features AST Plus slickness additive, which improves shooting accuracy and durability. It also has an extended head length and reduced drag, making it more accurate and efficient in windy conditions.
Is the Infinity Salt suitable for use in strong winds?
Yes, the Infinity Salt is designed with excellent turnover performance and a half-line weight, allowing it to handle even the windiest days effectively.
How does the AST Plus additive improve performance?
The AST Plus additive enhances the line’s slickness, improving shooting ability and increasing resistance to wear, which contributes to better accuracy and longer-lasting performance.


Kevin Murray –
This line performs exceptionally well in windy conditions. The shooting accuracy is noticeably better than my previous saltwater line. The drag is minimal, and the line holds up well after several trips to the coast.
Samantha Churchill –
I’ve used this line for over a month in saltwater environments. It’s durable and easy to cast. The extended head helps me place flies precisely, even when the wind is strong.
Penelope Piper –
Great performance in rough conditions. The line feels smooth and responds well to casting. A bit more expensive, but the durability justifies the cost.
Jessica Berry –
The AST Plus technology makes a real difference. I can cast with confidence and the line doesn’t fray or wear easily, even after repeated use.