xTool
xTool S1 20W
$1599.99
Released 2023
Best Laser Engravers · head-to-head
xTool S1 20W vs Atomstack X40 Pro
A sourced, side-by-side comparison. Atomstack X40 Pro is cheaper at $949. Every spec and price links to its source.
Atomstack
Atomstack X40 Pro
$949Cheaper
Released 2023
Which is better: the xTool S1 20W or Atomstack X40 Pro?
The Atomstack X40 Pro wins 1 of the 1 specs we compare head to head; the other wins 0. The Atomstack X40 Pro is the cheaper at $949. The Atomstack X40 Pro both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | xTool S1 20W | Atomstack X40 Pro |
|---|---|---|
| US price | $1599.99 MSRP at xtool.com | $949 |
| Brand | xTool | Atomstack |
| Released | 2023 | 2023 |
| Laser type | diode | diode |
| Power (W) | 20 | 48 |
| Wavelength (nm) | 455 | 455 |
| Work area (mm) | 498×330 | 400×400 |
| Max speed (mm/s) | 600 | 500 |
| Min engraving accuracy (mm) | 0.06 | 0.01 |
| Connectivity options | Wi-Fi, USB, Ethernet | USB |
| Software compatibility | xTool Creative Space, LightBurn | LaserGRBL, LightBurn |
| Enclosed design | Yes | No |
| Weight (kg) | 20 | 12 |
| Material compatibility | wood, acrylic, leather, paper, MDF, fabric, stainless steel, stone, ceramic, glass, anodized metals | wood, acrylic, metal, leather, stone, MDF |
| Autofocus | Yes | No |
Sources — xTool S1 20W: xtool.com (verified 2026-06-26). Atomstack X40 Pro: atomstackshop.com (verified 2026-06-26).
What's the difference between the xTool S1 20W and Atomstack X40 Pro?
Where the two actually differ on the specs we track (10 of 12). Matching specs are omitted.
- Power (W): xTool S1 20W 20 vs Atomstack X40 Pro 48
- Work area (mm): xTool S1 20W 498×330 vs Atomstack X40 Pro 400×400
- Max speed (mm/s): xTool S1 20W 600 vs Atomstack X40 Pro 500
- Min engraving accuracy (mm): xTool S1 20W 0.06 vs Atomstack X40 Pro 0.01
- Connectivity options: xTool S1 20W Wi-Fi, USB, Ethernet vs Atomstack X40 Pro USB
- Software compatibility: xTool S1 20W xTool Creative Space, LightBurn vs Atomstack X40 Pro LaserGRBL, LightBurn
- Enclosed design: xTool S1 20W true vs Atomstack X40 Pro false
- Weight (kg): xTool S1 20W 20 vs Atomstack X40 Pro 12
- Material compatibility: xTool S1 20W wood, acrylic, leather, paper, MDF, fabric, stainless steel, stone, ceramic, glass, anodized metals vs Atomstack X40 Pro wood, acrylic, metal, leather, stone, MDF
- Autofocus: xTool S1 20W true vs Atomstack X40 Pro false