Scientific Scientific Anglers Fly Line Review
Our verdict
At $99.95, the Scientific Anglers Amplitude Infinity is the priciest line in this comparison, but its 4.7-star rating ties the Cortland 403055 for the top score, backed by 113 reviews and 50+ bought last month, a demand figure that matches the RIO 6-20751 despite the far higher asking price.
Check price on AmazonBest for
Anglers willing to pay a premium for a WF-5-F Amplitude Freshwater Infinity taper who value a top-tier 4.7-star rating and are comfortable with a smaller, 113-review sample than the higher-volume alternatives.
Skip if
Skip this if $99.95 is above budget. The RIO 6-20751 and Rio Mainstream Trout both cost half as much at $49.99 and carry larger review counts, at 216 and 438 respectively, for anglers prioritizing price and sample size over the Amplitude branding.
- Material Polyvinyl Chloride (PVC)
- Weight 0.01 Ounces
- Length 13 Inches
- Line Weight WF-5-F
- Technique Amplitude Freshwater Infinity Fly Line
- Size WF-5-F
- Priced 400% above the category median ($19.99 across 18 tracked models)
Our scorecard
-
Owner rating4.7/5
4.7 average across 113 owner ratings
-
Popularity0.8/5
113 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other fishing gear and tackle we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The Scientific Anglers Amplitude Freshwater Infinity Fly Line is priced at $99.95, making it the most expensive product in this comparison by a clear margin over the Cortland 403055's $69.95 and the RIO lines' $49.99. Its 4.7-star rating ties the Cortland for the top score in the group.
Specs list a WF-5-F taper made from Polyvinyl Chloride, weighing 0.01 ounces and packaged as a single count in a Bamboo/Buckskin/Camo color scheme. That places it in the same WF5F weight class as the Cortland 403055, giving buyers a direct comparison point between the two premium-tier lines on this list.
Review volume is the tradeoff. At 113 reviews, this line has the smallest sample size in this comparison, well behind the Cortland's 242, the RIO 6-20751's 216, and the Rio Mainstream Trout's 438. Bought last month sits at 50+, matching the RIO 6-20751 and trailing only the Cortland 403055's 100+. For anglers who want a top-rated WF5F taper and are less concerned with sample size, this is the premium option in the group, and the price gap over the Cortland is the clearest tradeoff to weigh before buying.
Pros
- 4.7-star rating ties the Cortland 403055 for the highest score in this comparison
- WF-5-F Amplitude Freshwater Infinity taper matches the weight class of the Cortland 403055
- Bought last month of 50+ matches the RIO 6-20751 for the second-strongest demand figure
- PVC construction and single count packaging are clearly specified
- Bamboo/Buckskin/Camo color option is distinct from the Peach, green, and Lime Green alternatives
Cons
- At $99.95 it is the most expensive fly line in this comparison, well above the Cortland's $69.95
- 113 reviews is the smallest sample size of any product in this comparison
- Bought last month of 50+ trails the Cortland 403055's 100+ figure
- Costs roughly double the RIO 6-20751 and Rio Mainstream Trout at $49.99 each
Specifications
| Material | Polyvinyl Chloride (PVC) |
|---|---|
| Weight | 0.01 Ounces |
| Length | 13 Inches |
| Line Weight | WF-5-F |
| Technique | Amplitude Freshwater Infinity Fly Line |
| Size | WF-5-F |
| Color | Bamboo/Buckskin/Camo |
| Pieces | 1.0 Count |
| Feature | 1 Amplitude Freshwater Infinity Fly Line |
Performance notes
A WF-5-F designation places this line in the same weight-forward, floating, 5 weight class as the Cortland 403055, meaning it is built for the same general style of trout and warmwater fly casting. The Amplitude Freshwater Infinity naming suggests a taper engineered for distance and turnover within that WF5F class, and the PVC coating is a common approach for floating fly lines meant to shed water and reduce friction through the rod guides. The listed weight of 0.01 ounces and 13 inch length reflect packaging measurements rather than the full line length. The Bamboo/Buckskin/Camo colorway is a more muted palette than the brighter Lime Green and Fluorescent tones used by some of the budget alternatives, which can matter to anglers fishing clear water where a subtler line color is preferred.
What buyers say
A 4.7-star rating across 113 reviews ties this product with the Cortland 403055 for the top score in this comparison, though the review count is the smallest of the group, less than half the RIO 6-20751's 216 and well below the Rio Mainstream Trout's 438. Bought last month of 50+ places it in the middle of the pack for recent demand, ahead of the 0+ figures seen elsewhere but behind the Cortland's 100+. The pattern reads as a smaller but clearly satisfied buyer base rather than a high-volume seller, which fits its position as the premium priced option in this group.
Similar fishing gear and tackle to consider
- Tenkara
Tenkara Tapered Furled Line with Integrated Tippet Ring in 10ft,
$10.9950+ bought last monthView on Amazon
Featured in
Frequently asked questions
What taper is the Scientific Anglers Amplitude Infinity built on?
It is a WF-5-F line, meaning weight forward, 5 weight, floating, the same weight class as the Cortland 403055 in this comparison, built with a PVC coating and packaged as a single count in a Bamboo/Buckskin/Camo colorway overall on the spool.
Why does this line cost more than the other options compared?
At $99.95 it is priced above the Cortland 403055 ($69.95) and both RIO lines ($49.99 each), reflecting its position as the premium Amplitude Freshwater Infinity taper in this particular WF5F fly line comparison group of four total products listed here.
Does the smaller review count mean the rating is less reliable?
Its 113 reviews are the smallest sample in this comparison, but the 4.7-star average still ties the Cortland 403055 for the highest rating among all four lines, suggesting consistent satisfaction within that smaller review group of buyers overall on the whole.