Choose the Prusa CORE One+ if you print ABS, ASA, nylon or polycarbonate and want a chamber that actually heats, with open-source software and parts you can service yourself. Choose the Bambu Lab P2S if you want the larger build volume, a hardened steel nozzle, a built-in 1080p camera and an easy route to multicolor. The biggest trade-off is chamber heat against convenience: Prusa lists a chamber that reaches 55 °C, while Bambu lists no active chamber heating for the P2S.

Every figure here comes from Prusa’s CORE One+ (Gen 2) product page, Bambu Lab’s P2S spec sheet and wiki, all checked October 19, 2026. Speed and noise numbers are each maker’s own claims. This page compares the current CORE One+ (Gen 2); our older Prusa CORE One review covers the earlier listing, which Amazon also still carries.

The two printers on the makers’ spec pages

Spec Prusa CORE One+ (Gen 2) Bambu Lab P2S
Build volume 250 × 220 × 270 mm (14.9 L) 256 × 256 × 256 mm
Chamber Enclosed, heats up to 55 °C Enclosed, no active heating
Max nozzle temperature 290 °C 300 °C
Default nozzle High-flow brass, 0.4 mm Hardened steel, 0.4 mm
Max bed temperature 120 °C 110 °C
Max toolhead speed Not listed on the product page 600 mm/s
Max acceleration Not listed on the product page 20,000 mm/s²
Camera Optional 1080p USB-C camera Built in, 1920 × 1080, 30 fps
Screen 3.5-inch color touchscreen 5-inch 854 × 480 touchscreen
Connectivity Ethernet and Wi-Fi Dual-band Wi-Fi, no Ethernet
Multicolor MMU3 (5 filaments) available; INDX (up to 8) listed as coming soon AMS 2 Pro and AMS HT, up to 20 slots
Slicer PrusaSlicer, EasyPrint Bambu Studio
Size and weight 415 × 444 × 555 mm, 22.5 kg 392 × 406 × 478 mm, 14.9 kg
Formats sold Assembled or DIY kit Assembled

Chamber heat and engineering materials

This is where the two printers split. Prusa describes the CORE One+ as having active chamber temperature control, with a chamber that reaches 55 °C and a ventilation system that adjusts to the material. Bambu says the P2S has no active chamber heating. It closes an airflow flap and recirculates chamber air through the carbon filter, and it markets the P2S as “50°C chamber ready,” which describes heat retention rather than a heater.

Prusa’s own filament table lists polycarbonate at 270 to 285 °C nozzle and 80 to 120 °C bed, and nylon at 260 to 280 °C, and says these materials benefit from an elevated chamber. If those are your core materials, the chamber specification matters more than any speed figure. If you mostly print PLA and PETG, it matters little, and the P2S switches to drawing cool outside air for PLA.

Nozzle and abrasive filament

The P2S ships with a hardened steel nozzle and extruder gear, and its spec sheet lists carbon- and glass-fiber filaments including PLA-CF, PETG-CF, ABS-GF, PA6-CF and PAHT-CF. The CORE One+ ships with a brass high-flow nozzle, and Prusa suggests adding a hardened nozzle for abrasive engineering materials. Prusa also lists an HT hotend that reaches 400 °C as coming soon, so check its store for current availability if you need PEKK-CF or PPS-CF.

Camera, screen and day-to-day use

The P2S includes a 1080p, 30 fps chamber camera and a 5-inch touchscreen. On the CORE One+, the camera is a separate accessory that connects over USB-C and needs Wi-Fi, and the touchscreen is 3.5 inches. Our guide to cameras for enclosed printers covers the add-on route.

Prusa positions the CORE One+ around local operation: it prints from a USB drive or over your local network with no internet connection required, and PrusaSlicer, Prusa Connect and firmware updates are free. Prusa also says it keeps spare parts in stock for years after release and that the printer comes apart with a screwdriver. The P2S uses Bambu Studio and the MakerWorld model library and works with third-party slicers that export standard G-code, though Bambu notes that some advanced features are unavailable with them.

Multicolor

Both printers can grow into multicolor, with different ceilings. Prusa lists the MMU3 for up to five colors as available now, and the INDX toolchanger for up to eight materials as coming soon. On the Bambu side, the P2S works with the AMS 2 Pro, which dries filament, and Bambu says the printer supports 4 AMS 2 Pro and 4 AMS HT units, 20 slots in all. Our Bambu AMS vs Prusa MMU3 comparison covers the two systems directly, and the AMS 2 Pro review covers the dryer.

Which should you buy?

Choose the Prusa CORE One+ if:

  • you print ABS, ASA, nylon or polycarbonate and want a heated chamber
  • open-source software, local operation and repairability matter to you
  • you would like the option of building it yourself from the kit
  • the smaller 250 × 220 × 270 mm volume is enough

Choose the Bambu Lab P2S if:

  • you want fiber-filled filament without swapping the nozzle
  • you want a built-in 1080p camera and a larger touchscreen
  • you may want multicolor and drying, which the P2S Combo covers by including the AMS 2 Pro
  • you want the larger 256 mm cube and a lighter, smaller body

For the P2S against its predecessor, see P2S vs P1S . If you are weighing the larger Prusa against Bambu’s top model, see Prusa CORE One L vs Bambu Lab H2D .

FAQ

Does the Prusa CORE One+ have a heated chamber?

Yes. Prusa lists a maximum chamber temperature of 55 °C and describes active chamber temperature control with smart ventilation. Bambu lists no active chamber heating for the P2S.

Which has the larger build volume, the CORE One+ or the P2S?

The P2S. Bambu lists 256 x 256 x 256 mm, and Prusa lists 250 x 220 x 270 mm for the CORE One+, which Prusa quotes as 14.9 liters.

Can the CORE One+ print carbon-fiber filament?

Prusa’s default nozzle is a brass high-flow nozzle, and it suggests adding a hardened nozzle for abrasive engineering materials. The P2S ships with a hardened steel nozzle and extruder gear.

Does the CORE One+ come with a camera?

No. Prusa lists the internal camera as optional, a 1080p USB-C camera for remote monitoring. The P2S has a built-in 1920 x 1080, 30 fps camera.

Sources