Bambu Lab A1 vs A1 mini vs P1S: Which Should You Buy?
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The A1 mini, A1 and P1S cover compact open-frame, full-size open-frame and enclosed printing. This comparison focuses on their practical differences. Use each product link for current CAD pricing and availability at NEX3D.
Updated September 6, 2026. Product specifications, availability and CAD prices can change; linked product pages show current information.
At a glance
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| Feature | A1 mini | A1 | P1S |
|---|---|---|---|
| Build volume | 180³ mm | 256³ mm | 256³ mm |
| Style | Open frame | Open frame | Fully enclosed |
| ABS/ASA considerations | Open frame; not a model to choose for routine ABS/ASA printing | Open frame; not a model to choose for routine ABS/ASA printing | Enclosure supports this workflow; use the exact material profile and ventilation guidance |
| Example four-colour configuration | One AMS lite | One AMS lite | One compatible four-slot AMS-family unit |
| Current CAD price | View live price | View live price | View live price |
Bambu Lab A1 mini — compact open-frame option
The A1 mini has a 180 mm-class build area and supports AMS Lite in its Combo configuration. Consider it when compact size matters more than the larger build area of the A1.
Bambu Lab A1 — larger open-frame option
The A1 provides a 256 mm-class open build area and supports AMS Lite in its Combo configuration. Compare it with the A1 mini when build volume is the main constraint.
Bambu Lab P1S — enclosed option
The P1S is the enclosed model in this comparison. An enclosure helps control conditions for materials such as ABS and ASA. AMS capacity depends on the connected configuration; check the product page for supported combinations.
Choose by the project
- Compact size and lower entry cost: A1 mini
- Larger open build area with AMS Lite: A1 Combo
- Enclosed printing and full-size AMS support: P1S
Want to see the rest of the range? Read our best 3D printers in Canada guide or shop all Bambu Lab 3D printers.
Frequently asked questions
Is the A1 mini suitable as a first printer? It can be when its 180 mm build area and open-frame material range fit the intended projects. It includes automatic calibration features.
What's the difference between the A1 and the P1S? The A1 is open-frame and uses AMS Lite. The P1S is enclosed and supports the full-size AMS platform, which changes its material and multi-colour options.
Can the A1 and A1 mini print in multiple colors? Yes, with the AMS lite (the Combo version), both print up to four colors automatically.
How should I choose between the A1 Combo and P1S? Choose based on enclosure requirements, compatible materials, AMS platform, build volume and current total price.
Check the connected material system
The examples above describe four-colour configurations, not the maximum capacity of every possible setup. For additional AMS units or newer adapters, check the current Bambu Lab multi-model AMS compatibility guide, including required hardware and firmware.