Power Meets FinesseNow in a Silent, Slick Package.

The Amplitude Smooth MPX is a best-in-class all-purpose fly line designed to do everything a trout angler could ask forand do it quietly. Built a half-size heavy with a front-biased taper, it loads modern fast-action rods with authority while still allowing for delicate dry fly presentations when it counts.

This line features SAs AST Plus slickness additive, making it one of the slickest, longest-lasting coatings on the marketbut in a smooth finish that slides silently through guides (no textured zip like the original Amplitude series). Whether youre throwing hoppers, chucking nymph rigs, or punching into wind, MPX handles it.

Why We Like It

• Half-size heavy taper = quick rod loading

• Smooth coating for stealthy presentations

• AST Plus = extreme durability and slick shooting

• True do-it-all line for dry flies, nymphs, and small streamers

• Welded loops for fast leader swaps

Tech Specs

• Taper: Weight Forward, MPX profile (front-loaded)

• Core: Braided multifilament

• Coating: AST Plus (smooth finish)

• Application: Freshwater

• Loops: Welded front and rear

Pro Tip:

If you liked the original SA MPX but want less noise and more stealth, this line is your upgrade. Pair with a 5wt fast-action rod for ultimate all-day, all-conditions performancefrom dries to buggers.