The Scientific Anglers Amplitude Smooth Trout Expert Fly Line is designed for anglers who demand absolute precision when casting to selective trout. Built true to line weight, this refined taper delivers delicate, controlled presentations—perfect for small dry flies, long leaders, and subtle drifts to wary risers. With AST Plus slickness technology, it shoots farther, stays cleaner, and lasts longer than any other smooth fly line, offering up to five times less drag and eight times the durability of standard lines.
Crafted with an elongated front taper, the Trout Expert excels in medium-to-long distance presentations, providing pinpoint accuracy and gentle landings that won’t spook fish. Ideal for technical trout fishing, this line pairs beautifully with bamboo, fiberglass, or modern graphite rods. The braided multifilament core maintains suppleness and control in cold and moderate water climates, while the Improved Dry Tip Technology ensures the front section floats high for flawless drifts and precise hooksets. Whether casting small dries or lightweight nymphs, this line brings unmatched control and feel to every presentation.
Complete with welded loops, SA•ID line identification, and AST Plus coating, the Amplitude Smooth Trout Expert is built to perform flawlessly across the most demanding trout waters. It’s the ultimate choice for anglers who value technical precision, delicate presentation, and smooth, balanced performance when fishing for trout and grayling in challenging conditions.
| S/A AMPLITUDE SMOOTH TROUT EXPERT FLY LINE | ||||
|---|---|---|---|---|
| Line Weight | Head Length | Total Length | Head Weight | Grain Weight* |
| WF2F | 65.0' | 90.0' | 170gr | 80gr |
| WF3F | 65.0' | 90.0' | 195gr | 100gr |
| WF4F | 67.0' | 90.0' | 240gr | 120gr |
| WF5F | 69.0' | 90.0' | 300gr | 140gr |
| WF6F | 71.0' | 90.0' | 340gr | 160gr |
| WF7F | 73.0' | 90.0' | 405gr | 185gr |
*Grain weight for first 30' of fly line
AST+ - A new formulation of our patented dry-slick technology provides continual line slickness over the lifetime of the line. Up to 50% slicker than the original AST and 200% more durable than the competition. Fly lines with AST Plus cast farther, float higher, and stay cleaner than any other lines ever built.
Welded Loops - Exceptionally slick and strong, Scientific Anglers Welded Loops produce smoother casts and easier turnover with a seamless fly-line-to-loop transition, making for softer landings and cleaner pickups. The sleek design also maintains buoyancy for improved fly-line flotation and enables quicker connections between fly line and leaders or fly line and backing.
Improved Dry Tip - Utilizing a unique blend of microballoons, Scientific Anglers' have developed a fly-line tip section that floats twice as high as a standard line. The tip section will be floating higher with our Dry Tip Technology, which means less drag from the front of the line and more positive hook-ups.
SA Line ID - Meet the Scientific Anglers Line Identification System. SA•ID is an innovative line-marking system allowing you to identify your lines at a glance. Wonder if a shooting head is 200 grain or a 300? Just look at the SA•ID. The SA•ID can be found on the first 1-2 feet of the tip section of your line.
