Scientific Anglers Amplitude Smooth Infinity Instructor

Scientific Anglers Amplitude Smooth Infinity Instructor is a floating fly line that utilizes the AST Plus additive, which enhances the line's slickness and durability. This additive is directly integrated into the line's coatings, making the line extremely durable and slick.

The line features three different colors to help identify the various parts of the line, and welded loops make attaching the line quick and easy. This line is specifically designed for casting instruction, with color changes every 10 feet in the head area.

Scientific Anglers Amplitude Smooth Infinity Instructor - Features:

• AST Plus additive enhances the line's slickness and durability
• Versatile general-purpose taper suitable for most freshwater species
• Half-size heavier to load fast-action rods, but also works well with other rod actions
• Long head length allows for long casts and excellent line control
• Suitable for dry flies, nymphs, and streamers
• Designed for use in moderate and cold climates
• Line is delivered on a reel without packaging

This line is an excellent choice for fly anglers who value durability, slickness, and versatility.

Product text updated on 18.12.2025.