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Scientific Anglers Amplitude Smooth Infinity Fly Line

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Scientific Anglers brand new Amplitude Smooth Infinity fly line is a great general purpose freshwater line. Built a half of line size heavy to quickly and efficiently load today’s faster action fly rods with an extended head length for greater accuracy over longer distances and easibility to mend the line.

Scientific Angler’s brand new Amplitude Smooth Series of fly lines combine the slickness and durability of their proprietary AST Plus additive with a classic smooth fly line coating, eliminating the “humming” found in the standard Amplitude and Wavelength fly lines.

The Infinity fly line comes in two different color styles with three differentiating color-ways to help quickly identify the separate parts of the line, and welded loops for quick and easy rigging.

Available in weight-forward floating lines from 3-8 weight.


• Features the revolutionary AST Plus slickness additive for superior shooting ability and increased durability

• Extremely versatile general-purpose taper designed for most freshwater species; an excellent line for trout, grayling, panfish, bass, carp, steelhead, salmon, and pike

• Made a half-size heavy to load fast-action rods, but works well with a variety of rod actions

• Extended head length for long-distance casts and superior mending ability

• Excellent for dry flies, nymphs, and streamers

• Available in two color schemes: standard and camo; the camo scheme features a mottled front taper for increased stealth

• For use in moderate and cold climates

• Braided multifilament core




Camo, Standard, Bamboo-Buckskin-Camo, Glo Tip, Optic Green-Mist Green-Buckskin, Optic Green-Satin Orange-Cream

Line Size

WF 3, WF 4, WF 5, WF 6, WF 7, WF 8