AMS & Color
AMS 2 Pro vs AMS Lite
This looks like a product comparison and it is actually a compatibility fact. Which one you can buy is already decided by which printer you own.
By Michael W. · Published October 5, 2026
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The verdict
You do not choose between these. The AMS 2 Pro fits enclosed P-series and X-series machines. The AMS Lite fits the A1 and A1 mini. They are not interchangeable in either direction.
What you do choose is what to buy alongside. On an enclosed machine, the 2 Pro covers color and moisture together. On an A-series machine, AMS Lite covers color and you need a dryer for moisture.
Side by side
| AMS 2 Pro | AMS Lite | |
|---|---|---|
| Fits | Enclosed P-series and X-series | A1 and A1 mini |
| Spools | 4 | 4 |
| Enclosure | Sealed | Open air |
| Active drying | Yes | No |
| Humidity monitoring | Yes | No |
| RFID logging | Yes | — |
| Jam access | Panels off | Visible and reachable |
| Extra purchases needed | None for most materials | Dryer and sealed storage |
Where the comparison is genuinely useful
Not when choosing an accessory, but when choosing a printer. If multi-color printing with engineering materials is central to what you want to do, the AMS difference is a real argument for an enclosed machine over an A-series one — and it is an argument that rarely appears in printer comparisons, which tend to focus on the enclosure and the speed.
Put the total costs side by side: an enclosed printer plus a 2 Pro, against an A-series printer plus AMS Lite plus a dryer plus sealed boxes. The gap narrows considerably, and the enclosed route also gets you ABS capability. A1 vs P1S is where that decision lives.
The one thing AMS Lite does better
Failure visibility. When filament jams in an open-air unit you can see where and reach it with your fingers. In a sealed unit the same diagnosis starts with taking panels off and often ends with a PTFE tube you did not know existed.
That is a real advantage the first several times something goes wrong, and it is worth naming because every other row in the table above favors the sealed unit. Diagnosing a feed failure covers both cases.
Choose based on your printer, then fill the gap
- P1S, P2S, X1C, X2D, H-series: AMS 2 Pro. Nothing else needed for PLA, PETG or TPU. Add an AMS HT or a high-temperature dryer if you print nylon or PC.
- A1, A1 mini: AMS Lite, plus a dryer, plus sealed storage with desiccant. Treat that as the price of multi-color on an open machine.
The two machines, side by side
Stock photograph of this product class, not of this specific unit.
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1. For P-series and X-series
Bambu Lab AMS 2 Pro
Sealed, four spools, active drying. The complete answer if your printer takes it.
Sealed four-spool unit with active filament drying, humidity monitoring and RFID logging, for the enclosed P-series and X-series machines.
If your printer takes this, there is very little to deliberate: it covers both multi-color and moisture in one purchase. The only real question is whether you want multi-color at all, given the purge waste.
What it gets right
- Active drying means the spool you print from is the spool you dried — no transfer step, no re-absorption window
- Four colors on a machine you already own, for a fraction of a new printer
- RFID logging removes the single most common cause of a ruined multi-color print: the wrong material profile
What it does not
- Four-color printing wastes filament on every tool change; the purge tower is real and it is not small
- If you only print single-color PLA, you are buying a dryer with a filament changer attached
- Needs the space beside or above the printer that your shelf may not have
| Type | Four-spool automatic material system |
|---|---|
| Headline feature | Active filament drying |
| Inherits | Humidity monitoring and RFID logging from the original AMS |
Stock photograph of this product class, not of this specific unit.
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2. For the A1 and A1 mini
Bambu Lab AMS Lite
Open-air, four spools, no drying. Good at its job, with a gap you have to fill separately.
Compact open-air four-spool unit for the A1 and A1 mini. It changes colors reliably and it protects filament from nothing.
The practical consequence is that multi-color on an A-series machine costs AMS Lite plus a dryer plus sealed storage, where on an enclosed machine it costs one unit. That is worth knowing before you compare prices.
What it gets right
- The only way to get four-color printing on the A-series, and it does it well
- Open-air design makes a jam visible and reachable instead of a teardown
- Cheapest multi-color hardware Bambu sells
What it does not
- Open air means zero moisture protection — in a humid room your filament is exposed between prints
- No active drying and no sealed chamber, so PETG, TPU and nylon all need a separate dryer
- Not compatible with the P-series or X-series
| Type | Compact, open-air four-spool variant |
|---|---|
| Fits | A1 and A1 mini |
| Enclosure | None — spools sit in open air |
Questions people actually ask
Can I use an AMS 2 Pro on an A1?
No. The AMS 2 Pro is for the enclosed P-series and X-series machines; the A1 and A1 mini take the AMS Lite only. They are not interchangeable in either direction.
Is the AMS Lite worse than the AMS 2 Pro?
Less capable, and it fits a different family of printer. It changes colors reliably but offers no enclosure, no humidity monitoring and no drying, so on an A-series machine you need a separate dryer and sealed storage. The one thing it genuinely does better is making a jam visible and reachable.
Does multi-color cost more on an A1 than on a P1S?
In total, usually yes. On an enclosed machine the AMS 2 Pro handles color and moisture in one purchase; on an A-series machine you need AMS Lite plus a dryer plus sealed storage. That is worth factoring in when comparing printer prices, because it narrows the gap.
Which AMS has active drying?
The AMS 2 Pro, among the four-spool units, and the AMS HT as a single-spool high-temperature unit. The original AMS has humidity monitoring without drying, and the AMS Lite is open-air with neither.
Sources
Read this next
- Bambu Lab AMS 2 ProWhy active drying makes the AMS 2 Pro a different product from the original AMS, and the case for buying it instead of a new printer.
- Bambu Lab AMS LiteWhat the AMS Lite does well on an A1 or A1 mini, the moisture gap it leaves open, and the two things to buy alongside it.
- Bambu Lab A1 vs P1SThe A1 and P1S differ in one way that matters and several that do not. Which materials you print settles it in a sentence.
- Multi-color printing without an AMSHow to print two or three colors with no AMS and zero purge waste, and the point at which the manual method stops making sense.
- The best filament dryers in 2026Dryer picks split by temperature range and capacity, because a 70 C unit and a 110 C unit are different products for different materials.