Meet Another Great Product from the Amplitude Collection
Scientific Anglers at its best. The Amplitude series introduces the revolutionary AST PLUS slickness additive, delivering superior shooting performance and longer durability than any other fly line on the market. Slickness is now down to a science.
Features
- Features the revolutionary AST Plus slickness additive for superior shooting ability and enhanced performance
- Half-size heavy construction, building on the GPX design with improved mass distribution
- Redesigned head with increased mass toward the front for better presentation and control
- Retains the power of the GPX while adding a refined, more natural presentation
Specifications
| Parameter | Value |
|---|---|
| Taper Type | MPX |
| Weight Class | Half-size heavy |
| Key Technology | AST PLUS slickness additive |
| Design Focus | Presentation and shooting performance |
FAQ
What makes the AST PLUS additive different from other slickness technologies?
The AST PLUS additive is specifically engineered to improve shooting distance and reduce friction, allowing the line to perform more efficiently in the wind and on the water.
How does the MPX taper compare to the GPX taper?
The MPX taper builds on the GPX design with added mass in the front of the head, enhancing presentation and control while maintaining the same power and casting performance.
Is the Amplitude MPX line suitable for long-distance casting?
Yes, due to the AST PLUS additive and optimized taper, the MPX line offers excellent shooting distance and consistency, making it ideal for long-range casting.


Nicola Mackay –
The MPX line casts smoothly and shoots farther than expected. The front-heavy design helps with presentation on dry flies, and the slickness feels natural in the wind. A solid upgrade from the GPX.
Katherine Springer –
I’ve used several fly lines, but the Amplitude MPX stands out. It casts true and doesn’t tangle easily. The AST PLUS additive makes a noticeable difference in how it moves through the air.
Felicity Avery –
Good performance overall. A bit heavier than I expected, but the presentation is better on light flies. Works well in windy conditions and feels more controlled than standard lines.
Lisa Burgess –
The line holds up well after multiple casts. It doesn’t fray and maintains its slickness even after being stored in a bag for weeks. Highly recommended for serious fly fishing.