Description
Description
Scientific Anglers Amplitude Smooth Infinity is a half-size heavy freshwater floating line built as a versatile all-round taper for river and stillwater fishing. Its extended head carries line easily for distance control and precise mends while turning over long leaders cleanly. Suited to dries nymphs streamers and indicator rigs it matches modern fast and moderate action rods.
Technologies
- AST+ – Advanced slickness coating that reduces friction improves shootability and maintains slick performance far longer.
- Welded Loops – Durable welded loops on both the front and back of the line for easy reliable loop-to-loop connections to backing and leaders.
- Improved Dry Tip – Specialised tip coating that increases flotation for better line control and cleaner drifts.
- SA-ID – Printed line identification system showing taper weight and density for quick recognition.
- Camo Tips – Multi-colour blended tips that break up line visibility for stealthy presentation in clear water.
- Braided Multifilament Core – Supple cold-water core that improves flotation reduces memory and provides smooth stable casting.
Temperature Rating
- Cold / Moderate – 0°C to 25°C
Target Species
- Trout
- Yellowfish
- Carp
- Bass
- Barbell
Types of Flies
- Dries
- Nymphs
- Streamers
- Poppers / Big Dries
- Indicator
Additional Features
- Half-size heavy taper helps load modern rods efficiently
- Long head design aids distance casting and precise mending
- Balanced front taper turns over long leaders with mixed fly sizes
- Performs reliably on both rivers and stillwaters in cooler climates
- Smooth casting profile supports a wide range of techniques
Line Chart
| Line Weight | Head Length | Total Length | Head Weight | Grain Weight* |
|---|---|---|---|---|
| WF-3-F | 14.3 m | 27.4 m | 155 gr | 110 gr / 7.1 g |
| WF-4-F | 14.6 m | 27.4 m | 190 gr | 130 gr / 8.4 g |
| WF-5-F | 14.9 m | 27.4 m | 225 gr | 150 gr / 9.7 g |
| WF-6-F | 15.2 m | 27.4 m | 265 gr | 175 gr / 11.3 g |
| WF-7-F | 15.5 m | 27.4 m | 305 gr | 200 gr / 13.0 g |
| WF-8-F | 15.8 m | 27.4 m | 350 gr | 225 gr / 14.6 g |
*Grain weight measured at first 9.1 m.
Amplitude Smooth Line Features
Scientific Anglers took their revolutionary AST Plus slickness additive and put it into the Amplitude Smooth Series. These lines are smooth like traditional lines, but have increased durability and slickness due to the AST Plus, which is mixed directly into the coatings.
Each line is built with three colours to identify the separate parts of the line, and welded loops for quick and easy rigging.

