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- A20 Pro V2 vs SF-A9 20W
AtomStack A20 Pro V2 vs Sculpfun SF-A9 20W
What A20 Pro V2 does better (1) and where SF-A9 20W wins (4) — every spec side by side.
vs
7.3Power & cutting8.1
6.1Speed8.0
4.7Precision5.0
6.5Work area7.7
6.4Safety7.1
7.4Features & ease of use7.4
Dimensions
Size comparison
A20 Pro V2SF-A9 20W
| A20 Pro V2 | SF-A9 20W | Difference | |
|---|---|---|---|
| Height | 178 mm | 110 mm | +68 mm |
| Width | 178 mm | 606 mm | −428 mm |
| Depth | 254 mm | 665 mm | −411 mm |
| Weight | 6 kg | 6.2 kg | −0.2 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is A20 Pro V2 better than SF-A9 20W?
- Weight6 kg vs 6.2 kg+3%
Why is SF-A9 20W better than A20 Pro V2?
- Max engraving / travel speed400 mm/s vs 600 mm/s+50%
- Work area (surface)1,460 cm² vs 1,600 cm²+10%
- Max cutting depth – wood / plywood (one pass)17 mm vs 20 mm+18%
- Work area depth (Y)365 mm vs 400 mm+10%
Specifications
Side by side
| General | ||
| Laser sources | Blue diode (≈455 nm) | Blue diode (≈455 nm) |
| Motion system | Gantry (XY rails) | Gantry (XY rails) |
| Two laser sources | No | No |
| Wavelength | 455 nm | 450 nm |
| Laser power | ||
| Laser output power | 20 W | 20 W |
| Work area | ||
| Work area | 400 × 365 mm | 400 × 400 mm |
| Work area width (X) | 400 mm | 400 mm |
| Work area depth (Y) | 365 mm | 400 mm |
| Work area (surface) | 1,460 cm² | 1,600 cm² |
| Speed & cutting | ||
| Max engraving / travel speed | 400 mm/s | 600 mm/s |
| Max cutting depth – wood / plywood (one pass) | 17 mm | 20 mm |
| Max cutting depth – acrylic | 15 mm | — |
| Precision | ||
| Laser spot size | 0.1 mm | 0.1 mm |
| Positioning accuracy | 0.02 mm | — |
| Linear rails | — | Yes |
| Safety | ||
| Enclosed (fully covered) | No | No |
| Flame / fire detection | Yes | Yes |
| Emergency stop button | — | Yes |
| Tilt / movement sensor | — | Yes |
| Features | ||
| Air assist | Yes | Yes |
| Built-in camera | No | No |
| Autofocus / auto height | No | No |
| Rotary attachment support | Yes | Yes |
| Connectivity & software | ||
| Connections | USB, Wi-Fi | USB, Wi-Fi, Bluetooth |
| Wi-Fi | Yes | Yes |
| USB | Yes | Yes |
| Bluetooth | — | Yes |
| Compatible software | LightBurn, LaserGRBL, AtomStack Studio | LightBurn, LaserGRBL |
| LightBurn compatible | Yes | Yes |
| File formats | JPG, SVG, PNG, BMP, PDF, G-code, DXF | — |
| Size & power | ||
| Width | 178 mm | 606 mm |
| Depth | 254 mm | 665 mm |
| Height | 178 mm | 110 mm |
| Weight | 6 kg | 6.2 kg |
| Rated power consumption | 120 W | — |
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