Bambu Lab P1S Combo, P1S 3D Printer and AMS, Multi-Color CoreXY 3D Printer Review (2026)

Who should look at the P1S with AMS

This combo suits buyers who want a single purchase that covers both an enclosure for heat sensitive filaments and automatic color switching, rather than adding the AMS as a later upgrade to a bare P1S. It fits makers producing cosplay props, display models or multi-material functional parts who value not having to babysit filament changes mid-print. The enclosed chamber also opens the door to ABS and PETG without the warping problems open-frame printers often show on larger parts. Someone printing single-color PLA almost exclusively gets little from the AMS specifically and would be better served buying the bare P1S and putting the savings toward filament or a second printer.

CoreXY motion and the AMS explained

The P1S uses CoreXY motion, where the print head moves along both axes using two motors working together, a design that tends to hold accuracy better at speed than older single-axis gantry printers. Bambu Lab's AMS included in this combo holds up to four 1.75mm spools and automatically feeds whichever one a sliced model calls for at each color change, with up to four AMS units connectable for larger multi-material jobs. The enclosure keeps the build chamber warmer and more stable than an open frame, which reduces warping on ABS, ASA and similar filaments prone to curling as they cool unevenly in a draft. A 0.4mm nozzle rated to 300C ships standard, covering the common filament range from PLA through ABS without a hotend swap.

What daily use looks like

Bambu's own slicer and app handle slicing, auto bed leveling and remote monitoring through a built-in camera, which keeps the setup process closer to plug-and-play than printers expecting manual first layer tuning. Assigning colors to different parts of a model in the slicer is what triggers the AMS to swap spools automatically during a print, and each swap purges a short length of the old filament through the nozzle before the new color starts clean. On prints with many small color regions that purge time and waste add up meaningfully, so a model with broad color blocks prints more efficiently than one with fine multi-color detail. The AMS unit also sits on top of or beside the printer, adding real desk footprint beyond the printer's own base size.

Where it lands against other Bambu and multi-color printers

Compared with the site's top-ranked A1 Mini Combo and A1 Combo, both of which pair Bambu's AMS lite with an open-frame printer at a lower price, this P1S Combo costs more but adds the enclosure needed for ABS and ASA, a real advantage for anyone printing beyond PLA and PETG. Against the Anycubic Kobra S1 Combo with its own four-color ACE PRO system, the P1S benefits from Bambu's larger community, more mature slicer profiles and wider third-party accessory support. Against the X1-Carbon plus AMS, which ranks similarly, the X1C adds features like AI print monitoring and a larger effective color count in some configurations, at a correspondingly higher price.

Verdict on this P1S and AMS combo

This is a strong buy for anyone who wants enclosed multi-material printing without piecing together an AMS purchase separately later, and the CoreXY motion keeps print quality solid even at speed. It costs more than the A1 Combo for broadly similar multi-color capability, so buyers who do not need the enclosure for ABS or ASA can save money there instead. Plan for the extra desk space the AMS occupies and expect some filament waste on prints with lots of small color changes, both normal trade-offs of automatic color switching rather than defects in this particular printer.

Frequently asked questions