Scientific Anglers Amplitude Smooth Grand Slam Fly Line
Built a tad heavier and more aggressive, these lines will load any fast action rod and have the mass to turn over the bulkiest saltwater flies. The smooth coating is great because it won’t cut your hands when those blistering runs occur.
BONEFISH, PERMIT, AND TARPON, ALL ON ONE LINE
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. Tarpon. Bonefish. Permit. All in one day. All on one fly line. That’s the idea behind the Amplitude Smooth Grand Slam, a line designed specifically to help you achieve one of the most challenging saltwater fishing experiences.
| Specification | Value |
|---|---|
| Line Type | Smooth Fly Line |
| Designed For | Bonefish, Permit, Tarpon |
| Drag Reduction | Up to five times less drag |
| Durability | Eight times more durable than traditional lines |
FAQ
What makes the Amplitude Smooth Grand Slam different from other fly lines?
It offers up to five times less drag and eight times the durability of traditional lines, with a smooth coating that reduces hand cuts during fast runs.
Is this line suitable for all saltwater species?
Yes, it is specifically designed for bonefish, permit, and tarpon, making it ideal for targeting these species in one fishing session.
Does this line require special maintenance?
Please contact customer service


Wendy Murray –
This line performed exceptionally well during a bonefish and permit trip. The drag reduction made casting easier and the line held up well under heavy runs. No hand cuts even during long sessions. Highly recommended for saltwater fly fishing.
Faith Wilkins –
Fished tarpon with this line and found it to be very durable. The smooth coating prevented any discomfort during fast takes. It’s a game-changer for aggressive saltwater species.
Kylie Lewis –
Good performance in varying conditions. A bit heavier than expected, but it loads the rod well and handles big flies without breaking. Slightly more expensive, but worth it for durability.
Dorothy Terry –
Used it on a multi-species trip and caught bonefish, permit, and tarpon all in one day. The line’s smooth finish and low drag made it easy to cast and recover from strong runs.