Duotone Amp SLS 2145 hydrofoil front wing: 2,145 cm², 1,430 mm span, aspect ratio 9.60, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from Duotone's own published specifications.
Projected and flat area run 3–8% apart. A marked area is one whose brand does not state which it publishes, so a match inside the area tolerance may be comparing unlike figures.
| Brand | Wing | Area cm² | Δ area | Aspect ratio | Δ AR | Span mm | Band |
|---|---|---|---|---|---|---|---|
| North | Sonar P2050 P2050 | 2,050 | -4.4% | 9.60 | +0.0% | 1,400 | C4 High aspect |
| ENSIS | STRIDE Front Wing 2050 | 2,050 | -4.4% | 9.50 | -1.0% | 1,400 | C3 Mid aspect |
| GONG | Trail V3 XXL | 2,240 | +4.4% | 9.40 | -2.1% | 1,450 | C3 Mid aspect |
| GONG | Trail V3 Atmo 3XL | 2,250 | +4.9% | 10.10 | +5.2% | 1,510 | C4 High aspect |
| Family | Amp |
|---|---|
| Size | 2145 |
| Area, cm² | 2,145 |
| Area basis | unknown |
| Span, mm | 1,430 |
| Chord, mm | — |
| Aspect ratio | 9.60 |
| Band | C4 High aspect |
| Brand files it under | Pump / dock |
| Disciplines | pump |
| Construction | SLS |
| Model year | 2025 |
| Source | manufacturer |
The brand's published aspect ratio agrees with its own span and area (span² ÷ area) to within 5%, so the figure is confirmed.
See Duotone on the plot →Data current to August 2026. Fast Bobby is the researcher, never the reviewer: every figure above is the manufacturer's published claim, converted to comparable units, and nothing here is a riding impression.