Scientific Anglers Amplitude Smooth Double Taper Freshwater Floating Fly Line

The Scientific Anglers Amplitude Smooth Double Taper Freshwater Floating Fly Line is designed for anglers who value delicate presentations, precise line control, and traditional fly-fishing performance. Built around a classic double-taper profile, this line excels when presenting dry flies and smaller nymphs to wary trout in clear water, spring creeks, and other technical freshwater environments.

Unlike a weight-forward line, which concentrates most of its taper toward the front, a double-taper line features a long, level belly with tapered ends. This design promotes smooth casting, controlled presentations, and effective roll casting. When one end eventually wears, the line can also be reversed to extend its useful life.

Part of Scientific Anglers' Amplitude Smooth series, this fly line incorporates AST Plus slickness technology to improve shooting ability and durability. Its smooth coating pairs well with traditional bamboo and modern fiberglass rods, making it an excellent choice for anglers who appreciate a more deliberate, presentation-focused casting style.

Whether you're delicately presenting dry flies to selective trout, fishing smaller nymphs through a productive run, or making controlled roll casts along a tree-lined bank, the Amplitude Smooth Double Taper delivers dependable performance for classic freshwater fly fishing.

Features

• Classic Double-Taper Design: Provides a long, consistent belly for smooth casting and controlled fly presentation.

• True-to-Weight Construction: Designed to match standard fly-rod line ratings for predictable loading and casting.

• AST Plus Slickness Additive: Improves shooting ability and helps extend line durability.

• Delicate Presentations: Well suited to dry flies and smaller nymphs when accurate, controlled delivery is important.

• Roll-Casting Performance: The long belly supports line control and effective roll casting.

• Ideal for Bamboo and Fiberglass Rods: Complements traditional and modern slower-action rods.

• Smooth Coating: Delivers a smooth line surface without the textured construction of Scientific Anglers' Amplitude Textured series.

• Floating Design: Supports dry-fly fishing and other freshwater techniques that benefit from a floating line.

• Braided Multifilament Core: Provides the internal structure for dependable freshwater use.

• Reversible Taper: The line can be reversed when one end becomes worn, helping extend its service life.

• Welded Loops: Simplify connections to the leader and backing.

• SA Line ID: Helps identify the line and its specifications.

Ideal Applications

Dry-Fly Fishing

The Amplitude Smooth Double Taper is particularly well suited to dry-fly fishing, where a controlled presentation can make the difference between an ignored fly and a strike. Its taper supports accurate deliveries to trout feeding on the surface, especially in clear water where splash and line disturbance matter.

Small and Medium-Sized Nymphs

The line works well with smaller nymphs and lightly weighted subsurface patterns. Its long belly helps anglers maintain line control while managing drifts and adjusting presentations throughout a run.

Roll Casting and Line Control

The double-taper profile is useful when fishing along wooded banks, under overhanging branches, or in other locations where a conventional backcast is restricted. Its long belly can also help anglers reposition line and execute controlled casts.

Bamboo and Fiberglass Fly Rods

Traditional bamboo rods and modern fiberglass rods often pair well with double-taper lines because of their smooth loading characteristics and presentation-oriented design. The Amplitude Smooth Double Taper is an excellent option for anglers who prefer these rod materials and a more traditional casting feel.

Technical Trout Water

When trout are selective and presentations need to be accurate and controlled, the double-taper design offers a useful alternative to more aggressive weight-forward tapers. It is especially suited to anglers fishing dry flies and smaller nymphs at medium to longer distances.

Best For

The Scientific Anglers Amplitude Smooth Double Taper is best suited for:

• Trout anglers who prioritize delicate presentations.

• Dry-fly fishing on rivers, streams, and spring creeks.

• Anglers fishing smaller nymphs.

• Bamboo and fiberglass fly-rod users.

• Fly fishers who regularly roll cast.

• Anglers who prefer a true-to-weight line.

• Those seeking a traditional taper with modern coating technology.

• Anglers who appreciate the ability to reverse a double-taper line as it wears.

Product Specifications

• Brand: Scientific Anglers

• Product: Amplitude Smooth Double Taper

• Line Type: Double-taper floating fly line

• Water Type: Freshwater

• Available Line Weights: DT-3-F, DT-4-F, DT-5-F

• Color: Moss/Leather/Buckskin

• Total Length: 85 feet

• Belly Length: Approximately 72–75 feet, depending on line weight

• Core: Braided multifilament

• Technology: AST Plus, Improved Dry Tip, SA Line ID, welded loops

• Primary Techniques: Dry flies and smaller nymphs

• Ideal Conditions: Cold and moderate water temperatures

• Target Species: Trout and grayling

• Manufacturer's Listed Price: $99.95

Frequently Asked Questions

What is the advantage of a double-taper fly line?

A double-taper line has a long, level middle section with tapered ends. This design supports smooth casting, delicate presentations, and roll casting. When one end becomes worn, the line can be reversed to use the opposite taper.

Is the Amplitude Smooth Double Taper good for dry-fly fishing?

Yes. It is designed to excel with dry flies and smaller nymphs, making it a strong option for anglers who prioritize accurate, controlled presentations to trout.

Can I use this line with a bamboo or fiberglass rod?

Yes. The classic double-taper design pairs particularly well with bamboo and fiberglass rods, especially when a smooth, presentation-focused casting style is preferred.

Is this line suitable for roll casting?

Yes. Its long belly helps maintain line control and supports roll casting, making it useful in locations where trees, brush, or other obstacles restrict the backcast.

What line weight should I choose?

Choose the line weight recommended for your fly rod. Because the Amplitude Smooth Double Taper is designed as a true-to-weight line, matching the rod's rated line weight is a good starting point.

Can I reverse a double-taper fly line?

Yes. Since both ends feature a taper, you can reverse the line when the original working end becomes worn. This can help extend the line's useful life, provided the opposite end remains in good condition.

Why Buy Scientific Anglers Fly Lines from Premier Tackle?

At Premier Tackle, we offer fly-fishing equipment for anglers who value dependable performance and thoughtful gear selection. The Scientific Anglers Amplitude Smooth Double Taper combines a classic taper with modern slickness technology, giving freshwater anglers a reliable option for technical trout fishing and controlled presentations.

Whether you're fishing dry flies on a clear stream or pairing a traditional rod with a presentation-focused line, the Amplitude Smooth Double Taper is a dependable addition to your fly-fishing setup.