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- A20 Pro V2 vs B1 20W
AtomStack A20 Pro V2 vs Longer B1 20W
What A20 Pro V2 does better (3) and where B1 20W wins (5) — every spec side by side.
vs
7.3Power & cutting8.1
6.1Speed8.0
4.7Precision4.4
6.5Work area8.9
6.4Safety3.2
7.4Features & ease of use3.5
Why is A20 Pro V2 better than B1 20W?
- Air assistYes · B1 20W: No
- Flame / fire detectionYes · B1 20W: No
- Wi-FiYes · B1 20W: No
Why is B1 20W better than A20 Pro V2?
- Work area (surface)1,460 cm² vs 1,980 cm²+36%
- Max engraving / travel speed400 mm/s vs 600 mm/s+50%
- Max cutting depth – wood / plywood (one pass)17 mm vs 25 mm+47%
- Work area depth (Y)365 mm vs 440 mm+21%
- Work area width (X)400 mm vs 450 mm+12%
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 | — |
| Laser power | ||
| Laser output power | 20 W | 20 W |
| Work area | ||
| Work area | 400 × 365 mm | 450 × 440 mm |
| Work area width (X) | 400 mm | 450 mm |
| Work area depth (Y) | 365 mm | 440 mm |
| Work area (surface) | 1,460 cm² | 1,980 cm² |
| Work-area extension kit | — | Yes |
| Speed & cutting | ||
| Max engraving / travel speed | 400 mm/s | 600 mm/s |
| Max cutting depth – wood / plywood (one pass) | 17 mm | 25 mm |
| Max cutting depth – acrylic | 15 mm | — |
| Precision | ||
| Laser spot size | 0.1 mm | 0.1 mm |
| Positioning accuracy | 0.02 mm | — |
| Safety | ||
| Enclosed (fully covered) | No | No |
| Flame / fire detection | Yes | No |
| Features | ||
| Air assist | Yes | No |
| Built-in camera | No | No |
| Autofocus / auto height | No | No |
| Rotary attachment support | Yes | Yes |
| Touchscreen / control panel | — | Yes |
| Connectivity & software | ||
| Connections | USB, Wi-Fi | USB, SD / USB drive |
| Wi-Fi | Yes | No |
| USB | Yes | Yes |
| SD / TF card | — | Yes |
| Phone app control | — | 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 | — |
| Depth | 254 mm | — |
| Height | 178 mm | — |
| Weight | 6 kg | — |
| Rated power consumption | 120 W | — |
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