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- Alpha MK2 Extended 20W vs K2 Pro 55W
Algolaser Alpha MK2 Extended 20W vs Ikier K2 Pro 55W
What Alpha MK2 Extended 20W does better (4) and where K2 Pro 55W wins (7) — every spec side by side.
vs
7.7Power & cutting9.5
5.3Speed8.0
2.3Precision4.4
8.2Work area7.4
6.0Safety8.7
8.2Features & ease of use8.9
Dimensions
Size comparison
Alpha MK2 Extended 20WK2 Pro 55W
| Alpha MK2 Extended 20W | K2 Pro 55W | Difference | |
|---|---|---|---|
| Height | 240 mm | 261 mm | −21 mm |
| Width | 650 mm | 750 mm | −100 mm |
| Depth | 730 mm | 600 mm | +130 mm |
| Weight | 6.5 kg | 23.6 kg | −17.1 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is Alpha MK2 Extended 20W better than K2 Pro 55W?
- Built-in cameraYes · K2 Pro 55W: No
- Work area (surface)1,640 cm² vs 1,600 cm²+2%
- Weight6.5 kg vs 23.6 kg3.6×
- Work area depth (Y)410 mm vs 320 mm+28%
Why is K2 Pro 55W better than Alpha MK2 Extended 20W?
- Laser output power20 W vs 55 W2.8×
- Enclosed (fully covered)No · Alpha MK2 Extended 20W: Yes
- Max engraving / travel speed333 mm/s vs 600 mm/s+80%
- Laser spot size0.175 mm vs 0.1 mm+75%
- Autofocus / auto heightNo · Alpha MK2 Extended 20W: Yes
- Flame / fire detectionNo · Alpha MK2 Extended 20W: Yes
- Work area width (X)400 mm vs 500 mm+25%
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 | 450 nm | — |
| Laser power | ||
| Laser output power | 20 W | 55 W |
| Work area | ||
| Work area | 400 × 410 mm | 500 × 320 mm |
| Work area width (X) | 400 mm | 500 mm |
| Work area depth (Y) | 410 mm | 320 mm |
| Work area (surface) | 1,640 cm² | 1,600 cm² |
| Conveyor / roll feeder support | — | Yes |
| Work-area extension kit | Yes | — |
| Speed & cutting | ||
| Max engraving / travel speed | 333 mm/s | 600 mm/s |
| Precision | ||
| Laser spot size | 0.175 mm | 0.1 mm |
| Safety | ||
| Enclosed (fully covered) | No | Yes |
| Laser safety class | — | Class 1 (eye-safe, enclosed) |
| Flame / fire detection | No | Yes |
| Emergency stop button | Yes | — |
| Tilt / movement sensor | — | Yes |
| Lid interlock | — | Yes |
| Built-in fume filter / purifier | Yes | — |
| Exhaust fan | — | Yes |
| Features | ||
| Air assist | Yes | Yes |
| Built-in camera | Yes | No |
| Autofocus / auto height | No | Yes |
| Rotary attachment support | Yes | Yes |
| Offline engraving (no computer) | Yes | — |
| Connectivity & software | ||
| Connections | — | USB, Wi-Fi |
| Wi-Fi | — | Yes |
| USB | — | Yes |
| Compatible software | LightBurn, LaserGRBL | LightBurn, AtomStack Studio |
| LightBurn compatible | Yes | Yes |
| Size & power | ||
| Width | 650 mm | 750 mm |
| Depth | 730 mm | 600 mm |
| Height | 240 mm | 261 mm |
| Weight | 6.5 kg | 23.6 kg |
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