AMPLITUDE SMOOTH INFINITY PLUS
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.
- Features the revolutionary AST Plus slickness additive for superior shooting ability and increased durability
- A scaled up version of our general purpose Infinity taper, the Infinity Plus is built a full size heavy for the fastest rods and larger trout rigs
- Underlining Infinity Plus by 1 size creates an AFFTA true standard weight for slower rods and advanced casters
- Braided multifilament core
| Specification | Detail |
|---|---|
| Line Type | Smooth Fly Line |
| Taper | Infinity Plus |
| Weight | Full Size Heavy |
| Core Material | Braided Multifilament |
| Durability | Eight times that of traditional lines |
| Drag Reduction | Up to five times less drag |
FAQ
What makes the AST Plus additive special?
The AST Plus additive improves shooting performance and increases line durability through enhanced surface slickness and resistance to abrasion.
Is the Infinity Plus suitable for fast-action rods?
Yes, it is specifically designed for fast rods and larger trout rigs due to its full-size heavy construction.
Can I use this line with slower rods?
Please contact customer service


Emily Mackay –
This line casts smoothly even in windy conditions. The drag is noticeably lower than my previous line, and it holds up well after multiple trips to the river. I’ve used it with both fast and medium rods and it performs consistently.
Gabrielle Dyer –
Great for larger trout setups. The shooting action is smooth and the line doesn’t tangle easily. I noticed less resistance during long casts, which helps with accuracy.
Cameron Avery –
The durability is impressive. After several weeks of regular use, there’s no visible wear. The braided core feels solid and the line maintains its shape even after repeated casting.