Scientific Anglers Amplitude Textured 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
- Floating Texture on the tip section
| Specification | Detail |
|---|---|
| Line Type | Fly Line |
| Special Feature | AST PLUS Slickness Additive |
| Tip Section | Floating Texture |
| Design Purpose | Targeting Tarpon, Bonefish, Permit |
FAQ
What makes the AST PLUS additive different from other slickness additives?
The AST PLUS additive is specifically engineered to improve shooting distance and line durability, offering better performance in windy conditions and extended use.
Is the floating texture on the tip section beneficial for all types of fishing?
The floating texture helps with casting accuracy and stability in light to moderate wind, making it especially effective for targeting species like bonefish and permit in shallow waters.
Can this line be used for both freshwater and saltwater fishing?
Please contact customer service

Anne Wallace –
The Amplitude Grand Slam performs exceptionally well in windy conditions. The AST PLUS additive gives it a smooth, consistent cast and it holds up well after repeated use. I’ve caught tarpon and bonefish with it on the same day, which was a big win.
Brian Glover –
Great for beginners and experienced anglers alike. The floating tip helps with control when targeting shallow water species. It casts farther than my previous line and feels more responsive.
Charles Paterson –
I used it during a bonefish trip in the mangroves. The line stayed clean and didn’t tangle easily. The texture on the tip helped with precision, and I was able to cover more ground without losing accuracy.