Fly line
Scientific Anglers SA Amplitude Smooth Infinity Fly Line
Scientific Anglers SA Amplitude Smooth Infinity Fly Line

Scientific Anglers SA Amplitude Smooth Infinity Fly Line

Fly line fly_line SKU: B07DV23RDL
$99.95 on Amazon

The Scientific Anglers Amplitude Smooth Infinity is a versatile freshwater fly line engineered for Great Lakes steelhead and trout fishing. Its extended head design excels at long-distance casting across wide rivers while the AST Plus coating ensures smooth shooting through guides in cold conditions. Perfect for swinging streamers, dead-drifting nymphs, or presenting dry flies to selective steelhead.

Right now on Steelhead Alley

12 of 31 Alley rivers fishing well right now — 3 in excellent shape.

spey nymphing swinging flies casting general steelhead trout salmon smallmouth largemouth bass pike panfish carp
In context
Targets: Steelhead · Trout · Salmon · Smallmouth

Common Questions

What kind of fishing is the Scientific Anglers SA Amplitude Smooth Infinity Fly Line used for?

Scientific Anglers's fly line is set up for spey & two-hand, nymphing, and swinging flies targeting steelhead, trout, salmon. Each technique has a dedicated guide on Steelhead Addiction with rigging walkthroughs and water-reading tips.

What fish species does the Scientific Anglers SA Amplitude Smooth Infinity Fly Line work for?

This fly line is curated for steelhead, trout, salmon, smallmouth. The Steelhead Addiction species field guide has biology and Great Lakes-specific tactics for steelhead and the rest.

Where do I buy the Scientific Anglers SA Amplitude Smooth Infinity Fly Line?

This product is fulfilled by Amazon — currently $99.95. SteelHead Addiction does not handle inventory, payments, or shipping; Amazon does. We curate the gear and pair it with live conditions context. Click "Buy on Amazon" to complete the purchase.

Are conditions good for fishing the Steelhead Alley right now?

12 of 31 Alley rivers fishing well right now — 3 in excellent shape. Live updates for all 31 rivers run every 15 minutes — see the full dashboard on Steelhead Addiction.

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Key Specs

Taper
WF
Sink Rate
Floating

Features

  • + 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 fly 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

Specifications

Brand Name
Scientific Anglers
Manufacturer
Scientific Anglers
UPC
840309132749
Global Trade Identification Number
00840309132749
Item Length
13 Inches
Included Components
1 Amplitude Freshwater Infinity Fly Line
Item Weight
0.01 Ounces
Unit Count
1.0 Count
Warranty Description
Contact Manufacturer
Best Sellers Rank
#58,284 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #22 in Fly Line
ASIN
B07DV23RDL
Customer Reviews
4.6 4.6 out of 5 stars (112)...
Material Type
Polyvinyl Chloride (PVC)
Strand Type
Braided
Fishing Line Type
Amplitude Freshwater Infinity Fly Line
Breaking Strength
40 Pounds
Line Weight
WF-5-F
Color
Bamboo/Buckskin/Camo

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