SA Amplitude Smooth Infinity Taper – Optic Green / Satin Orange
The Amplitude Smooth Infinity lines are 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 fly line redefines performance in freshwater fishing.
Designed as a half-size heavy line with a long head and substantial front taper, it excels at both casting streamers and handling delicate dry flies. It mends effortlessly and delivers flies consistently at all distances.
Perfect for trout, panfish, pike, and steelhead, this line combines power with precision. Its name ‘Infinity’ reflects its versatility—there’s no end to what it can do in the water.
| Specification | Detail |
|---|---|
| Weight | Half-size heavy |
| Taper Type | Infinity taper |
| Color | Optic Green / Satin Orange |
| Drag Performance | Up to five times less drag than traditional lines |
| Durability | Eight times more durable than traditional fly lines |
FAQ
What makes the Amplitude Smooth Infinity line different from traditional fly lines?
It offers up to five times less drag and eight times greater durability than traditional lines, with a unique infinity taper that provides excellent performance for both streamers and dry flies.
Is this line suitable for both trout and larger game fish like pike or steelhead?
Yes, the half-size heavy construction with a long head and substantial front taper makes it ideal for trout, panfish, pike, and steelhead.
Does the line perform well in windy or rough conditions?
The reduced drag and smooth casting action help maintain accuracy and control in challenging wind conditions.


Donna Kerr –
This line has changed how I fish. I use it for both dry flies and streamers, and it casts smoothly even in windy conditions. The mending is excellent and I’ve had no line breaks after several months of regular use.
Heather Manning –
Great versatility. I’ve fished it on trout streams and in deeper waters with pike. The drag is noticeably lower, and the line stays intact even after heavy casting.
Lily Baker –
Solid performance overall. The color combination is visible in the water, which helps with spotting. A bit heavier than expected, but still very manageable for my casting style.
Oliver Walker –
I switched from a traditional line and noticed a huge improvement in casting distance and accuracy. The durability is impressive—no fraying after multiple trips to the lake.