SA Amplitude Smooth MPX Floating Fly 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. Built a half-size heavy, the Amplitude Smooth MPX taper starts where the GPX left off. Redesigned with more mass toward the front of the head, the MPX provides the same benefits of the GPX, with an added emphasis on presentation. The power is still there, only with an added bit of finesse. Meet your new best friend.
- Features the revolutionary AST Plus slickness additive for superior shooting ability and increased durability
- An excellent general-presentation line for trout, panfish, bass, grayling and carp
| Specification | Value |
|---|---|
| Line Type | Floating |
| Taper | Half-Size Heavy |
| Drag Reduction | Up to five times less drag |
| Durability | Eight times more durable than traditional lines |
| Best For | Trout, panfish, bass, grayling, carp |
FAQ
What makes the Amplitude Smooth MPX different from other fly lines?
The Amplitude Smooth MPX features a redesigned head with more mass toward the front, improving presentation and finesse. It also includes the AST Plus slickness additive, which enhances shooting ability and durability.
Is this line suitable for all types of fishing?
Yes, it is an excellent general-presentation line for trout, panfish, bass, grayling, and carp.
How does the drag performance compare to traditional lines?
The MPX has up to five times less drag than traditional fly lines, resulting in smoother casting and better line control.



Sue Hart –
I’ve used several fly lines over the years, but the Amplitude Smooth MPX is by far the most responsive. The casting feels smooth and the line stays on target even in windy conditions. Great for small fish like trout and panfish.
Irene Hill –
The AST Plus additive makes a noticeable difference in how the line shoots. I can cast longer distances with less effort and the line doesn’t tangle as easily. Perfect for early morning fishing.
Mary Campbell –
It performs well in general fishing scenarios. A bit heavier than I expected, but the presentation is excellent for bass and carp. Slightly more expensive, but worth it for the performance.
Isaac Wilkins –
The durability is impressive. After several months of regular use, there’s no visible wear. The line holds up well in both still and moving water.