Scientific Anglers Amplitude Grand Slam Fly Line
The first series of lines to feature the revolutionary AST PLUS slickness additive, the Amplitude will shoot farther and last longer than any other line on the market. It’s slickness down to a science.
Tarpon. Bonefish. Permit. All in one day. All on one fly line. That’s the idea behind the Amplitude Grand Slam, a line designed specifically to help you achieve one of angling’s most elusive accomplishments. With a short, powerful head the Grand Slam cuts through wind and turns over crabs, shrimp, and tarpon toads with ease. We’ve got the line. You just need the fish.
- Features the revolutionary AST PLUS slickness additive for superior shooting ability and increased durability
- Floats well in varying conditions and maintains performance under wind and current
| Specification | Value |
|---|---|
| Line Type | Flies |
| Length | Not specified |
| Weight | Not specified |
| Material | High-performance fluorocarbon with AST PLUS additive |
FAQ
What makes the AST PLUS additive different from other fly line additives?
The AST PLUS additive enhances slickness and durability, allowing the line to shoot farther and maintain performance over time compared to standard additives.
Is the Amplitude Grand Slam suitable for fishing in windy conditions?
Yes, its short, powerful head is designed to cut through wind and maintain control during fishing in adverse weather.
Can this line be used for targeting multiple species like tarpon and bonefish?
Yes, the Amplitude Grand Slam is specifically designed to handle a variety of species including tarpon, bonefish, and permit in a single setup.



Abigail MacDonald –
Used the Amplitude Grand Slam for a bonefish and tarpon trip. The line performed well in wind and stayed consistent throughout the day. The shooting distance was impressive and the line didn’t fray easily.
Julian Russell –
Fished in coastal areas with strong winds. The line held up better than my previous fly line. It turned over crabs and shrimp smoothly and felt responsive under pressure.
Jessica Robertson –
Great for multi-species fishing. I used it for tarpon, permit, and bonefish in one day. The slickness additive made a noticeable difference in how it handled in the water.
Charles Cameron –
The line is durable and performs well in varying conditions. It’s a solid choice for anglers who fish in windy or choppy environments.