# xTool S1 20W vs Atomstack X40 Pro: specs and price compared

A sourced, side-by-side comparison of the xTool S1 20W (xTool) and Atomstack X40 Pro (Atomstack) among laser engravers. Atomstack X40 Pro is the cheaper of the two at $949.

## Side by side

| Spec | xTool S1 20W | Atomstack X40 Pro |
| --- | --- | --- |
| US price | $1599.99 | $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 |

## Key differences

- 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 Yes vs Atomstack X40 Pro No
- Weight (kg): xTool S1 20W 20 vs Atomstack X40 Pro 12

## Sources

- xTool S1 20W: https://www.xtool.com/products/xtool-s1 (xtool.com, verified 2026-06-26)
- Atomstack X40 Pro: https://atomstackshop.com/products/atomstack-a40-s40-x40-pro-laser-engraving-machine-210w-wth-air-assist-24w-48w-one-button-switching-laser-engraver-cutter (atomstackshop.com, verified 2026-06-26)

Canonical: https://frontdeskreview.com/gear/laser-engravers/xtool-s1-20w-vs-atomstack-x40-pro/
Cite: Per The Front Desk Review, xTool S1 20W ($1599.99) vs Atomstack X40 Pro ($949) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/laser-engravers/xtool-s1-20w-vs-atomstack-x40-pro/
License: CC BY 4.0.