The Bambu Lab AMS 2 Pro is an automatic filament management system designed for multi-color and multi-material 3D printing. It can automatically load and unload filament, identify compatible Bambu Lab filament through RFID, and actively dry filament while it is stored inside the unit.

The AMS 2 Pro builds on the original AMS with several major upgrades, including active filament drying, improved filament handling, and an updated design for Bambu Lab's newer printer ecosystem.

For users who want both automatic material switching and integrated filament drying, the AMS 2 Pro offers a significant upgrade over the original AMS.

Yes. The AMS 2 Pro includes an active drying system that can heat filament up to approximately 65°C.

This makes it useful for materials such as PLA, PETG, ABS, ASA, and other filaments that benefit from controlled drying and storage.

Yes. Filament can remain inside the AMS 2 Pro during the drying process. The system uses controlled heating and external air circulation to help remove moisture from the filament and the internal environment.

The AMS 2 Pro supports drying temperatures up to approximately 65°C.

For materials that require drying temperatures above 65°C, a higher-temperature filament dryer such as the Bambu Lab AMS HT may be a better choice.

It depends on the printer and configuration.

When a single AMS 2 Pro is connected to a compatible H2 Series printer using the supported 6-pin connection, the printer can provide power for the drying function.

Additional AMS 2 Pro units, and certain installations using X1 or P1 Series printers, may require an official Bambu Lab power adapter in order to use the active drying function.

Yes. Multi-color printing is one of the primary functions of the AMS 2 Pro.

Each AMS 2 Pro can hold multiple filament spools, allowing a compatible Bambu Lab printer to automatically switch between colors or materials during a print.

Yes. The AMS 2 Pro can automatically switch between compatible filament materials during a print.

Keep in mind that not every material combination is suitable for printing together. Materials should have compatible printing temperatures and adhesion properties.

A single AMS 2 Pro can hold up to four filament spools.

Yes. Compatible Bambu Lab printers can support multiple AMS units for expanded multi-color and multi-material printing.

The maximum number of AMS units and required connection hardware depend on your printer model and setup.

Yes. When compatible Bambu Lab filament with an RFID tag is installed, the AMS 2 Pro can automatically identify information such as filament type and color.

Yes. The AMS 2 Pro is not limited to Bambu Lab filament.

When using third-party filament, you may need to manually select the material type and color because most third-party spools do not contain Bambu Lab RFID tags.

The AMS 2 Pro is designed for standard 1.75 mm filament.

Bambu Lab specifies support for spools approximately 50–68 mm wide and approximately 197–202 mm in diameter.

Oversized or unusually shaped spools may not fit or feed properly.

Yes, but plastic spools are generally preferred.

Cardboard spools can produce dust or have irregular edges that may affect feeding. A compatible spool adapter can help improve reliability when using cardboard spools.

Some TPU filaments can be used, but very soft flexible materials are not recommended.

Bambu Lab specifically advises against using flexible materials below approximately 95A Shore hardness in the AMS 2 Pro because they may buckle or jam during automatic feeding.

Some reinforced and carbon-fiber filaments can be used with the AMS 2 Pro, depending on the specific material.

Always check the filament manufacturer's recommendations and make sure your printer has the appropriate hardened nozzle and extruder components for abrasive materials.

Yes. The enclosed design helps reduce exposure to ambient humidity after the drying cycle is complete.

For best results, keep the lid closed and make sure the desiccant is maintained properly.

Yes. Desiccant works together with the enclosed design to help maintain a low-humidity environment inside the AMS.

The active drying function can be used when filament needs more aggressive moisture removal.

The AMS 2 Pro is designed to function as both a filament management system and a dryer. Available drying and printing behavior can depend on your printer, firmware, and configuration.

The AMS 2 Pro is designed to work with multiple Bambu Lab printer families, including newer H2 Series systems as well as supported X1 and P1 Series configurations.

Compatibility, drying power requirements, and any required adapters or hubs can vary by printer, so always verify the requirements for your exact machine.

AMS compatibility varies across Bambu Lab printer families. Before purchasing the AMS 2 Pro specifically for an A1 or A1 mini, verify the current supported configuration and required accessories for your printer.

The AMS 2 Pro is primarily designed as a four-spool automatic material system with integrated drying, making it ideal for multi-color and multi-material printing.

The AMS HT focuses more heavily on high-temperature filament drying and engineering materials. The AMS HT can reach higher drying temperatures, while the AMS 2 Pro provides four-spool automatic filament management.

Choose the AMS 2 Pro if your priority is multi-color printing, multiple filament spools, automatic material switching, and built-in drying.

Choose the AMS HT if you frequently use engineering materials that benefit from higher drying temperatures and your priority is advanced filament drying rather than holding four spools at once.

It can be, especially if you want multi-color printing or the convenience of having several filaments loaded and ready to use.

If you only print single-color PLA and do not need automatic filament switching or drying, you may not use all of the AMS 2 Pro's capabilities.

The AMS 2 Pro is a great fit for:

• Multi-color printing
• Multi-material printing
• Users who want four filaments loaded at once
• Users who want integrated filament drying
• Print farms
• Frequent Bambu Lab users
• Users who regularly switch between filament colors or materials
• Anyone looking for a more automated filament workflow