Table of contents
Last verified: October 28, 2026
The Bambu Lab AMS 3P just leaked, and it tells us a lot about the P3C. Photos of a real unit and pages from its Quick Start Guide show a seven-slot AMS that sits on top of the printer.
That's one slot for each of the P3C's seven tools. It looks like every tool gets its own spool, so the printer can change colors without pulling filament back and purging it every time.
Bambu hasn't announced the AMS 3P or the P3C yet. Here is everything the leak shows, what the FCC filing adds, and what we think it will cost.
Bambu Lab AMS 3P at a Glance
| Detail | AMS 3P |
|---|---|
| Slots | 7, in two rows (leaked guide) |
| Made for | P3C (the leaked guide shows it on top of a P3C) |
| Where it goes | On top of the printer |
| Connection | 6-pin Bambu Bus port |
| Power input | 24 V, 1 A (FCC label) |
| Drying | Probably not (see below) |
| Extra feed paths | Bypass feed on five slots, plus an external spool inlet |
| FCC ID | 2A6J8-SA018, approved Sept 21, 2026 |
| Release date | Not announced |
| Price | Not announced (we estimate $300 to $400) |
What the Leak Shows
The leak comes in two parts: photos of a real AMS 3P with its lid open, and photos of pages from its printed Quick Start Guide.
A Real AMS 3P With Seven Feeding Funnels
The photo looks down into the AMS 3P with the lid open. A gray bar runs across the middle with seven orange feeding funnels on it, four on the front and three on top. That's where the filament goes in, and it matches the other images we have seen of the P3C itself with 7 toolchangers.
The slots have large clear plastic rings, and the guide's drawings show the same rings. You can also see what looks like a yellow lid strut in the top corners.
The Quick Start Guide Shows It on a P3C
The cover says "Bambu Lab AMS 3P Quick Start Guide," and the drawing shows the AMS 3P sitting on top of a printer. Look at the front of that printer and you can see "P3C" printed on it. It looks like we're going to need quite a bit of vertical clearance for this new generation of machines.
That's because the AMS 3P sits on top of the P3C, with all seven spools under one big curved lid. It's clearly made for this printer. In our H3C and P3C post, we guessed the H3C's AMS would be mounted on top too. Now we know the P3C's is, so we'd bet the H3C works the same way.
Seven Slots in Two Rows
The parts page shows how seven spools fit on top of the printer. Slots 2, 4 and 6 sit in the back row, and slots 1, 3, 5 and 7 sit in the front row, so the numbers zigzag from left to right. This is of course different from the current AMS to printer implementation. Since we have seven different tools, they now each map to a specific filament slot on the AMS.
The guide labels these parts:
- Lid struts: one on each side to hold the big lid open.
- Feeding funnel: where you feed filament into each slot.
- Bypass feed: on five of the seven slots. The guide notes there's no bypass feed on slots 2 and 6.
- Filament support shaft: what each spool sits on.
- Magnetic panel: a panel on the front of the AMS.
- Bambu Bus port (6-pin): the connection to the printer.
- External spool filament inlet: a slot on the side for feeding a spool from outside the AMS.
The guide doesn't explain what the bypass feed does, so we'll have to wait for Bambu on that one.
One Tube for Each Tool
The install page is the most interesting one to us. It shows seven tools in a row, and each one has its own filament tube running up toward the AMS.
That matches the seven tool docks in the P3C's certification photos, which we covered in our H3C and P3C post.
Why Seven Slots Matter
Here is our take: this is the part that matters most.
On a single-nozzle printer with an AMS, every color change means pulling the old filament out, pushing the new one in, and purging plastic until the new color comes out clean. That purge is where a lot of filament gets wasted on multicolor prints.
With seven tools and seven slots, each tool can stay loaded with its own filament. When the print needs a new color, the P3C just grabs the tool that already has it. That's the whole point of a tool changer, and the AMS 3P looks like it was built around it.
It also fits what Bambu has shown for the H3C. Its teaser shows nine filament paths running over the top of the printer, one for each of its nine tools.
One more guess from us: this may be why the AMS 3P draws so little power. If every tool keeps its filament loaded, the AMS doesn't have to push and pull filament on every color change. More on that power rating below.
What we don't know yet is if you can go past seven colors in one print, the way you can chain AMS units on a P2S. Bambu will have to answer that one. It would be really cool to see a filament hub implementation for chaining more of these new AMS units together. Hopefully that is in the works.
What the FCC Filing Adds
Fans spotted the filing on the Bambu Lab forum the day after the FCC approved it, and it tells us a couple of things the leak doesn't.
Its only radio runs at 13.56 MHz. That's the band the RFID tags on Bambu spools use, so the AMS 3P should read them like the other AMS units do.
The power rating is what jumps out. The AMS 3P takes 24 V at 1 A, which is about 24 watts. Here is how that compares to the rest of the lineup, all from their FCC labels:
| AMS | Slots | Power input | Drying |
|---|---|---|---|
| AMS (first gen) | 4 | 24 V, 3 A | No |
| AMS lite | 4 | 24 V, 3 A | No |
| AMS 2 Pro | 4 | 24 V, 4 A | Yes, up to 65°C |
| AMS 3P | 7 | 24 V, 1 A | Probably not |
| AMS 3H | Not known | 100 to 120 V AC at 200 W, or 24 V, 1 A | Probably |
So the AMS 3P runs on a third of the power of the first AMS while holding almost twice as many spools.
The filing also has a simple drawing that shows where the label goes. It's a flat panel with four screws and one long slot, and it looks like the side panel with the external spool inlet from the leaked guide.
Can the AMS 3P Dry Filament?
Probably not, but this is our read of the label, not something Bambu has said.
The AMS 2 Pro dries filament at up to 65°C, and its label asks for 24 V at 4 A. The AMS 3P gets a quarter of that, with seven spools to run. That doesn't leave much power for a heater.
The leaked parts page doesn't show a heater or an air vent either, though it only labels the parts you can see from the outside.
If you print a lot of PETG, nylon or other filaments that soak up moisture, you may still want a separate dryer for a P3C. We'll know for sure once Bambu posts the full specs.
What About the AMS 3H?
The AMS 3H passed FCC testing the same day as the AMS 3P, under FCC ID 2A6J8-SA017. All we have for the 3H is its FCC label and drawing, since it wasn't part of this leak.
Two things stand out:
- It plugs into the wall. The label lists 100 to 120 V AC at 200 W, or 24 V at 1 A. That much power points to a heater, so we think the 3H can dry filament.
- It looks like the AMS 3P. The drawing shows the same curved lid and body as the back view in the AMS 3P guide. Where the 3P has its external spool inlet, the 3H has a vented panel.
The names line up too. The AMS 3P is made for the P3C, so the AMS 3H is most likely made for the H3C. The H3C has nine tools, so our guess is the 3H has a slot for each one. Bambu hasn't confirmed any of that yet.
How Much Will the AMS 3P Cost?
Bambu hasn't shared a price. Here is what its current AMS units cost on the US store as of October 28:
- AMS 2 Pro: $299, or $229 in the current sale (4 slots, with drying)
- AMS lite: $199, or $159 in the sale (4 slots, no drying)
The AMS 3P has almost twice the slots, but it probably skips the dryer. Based on that, our educated guess is that the AMS 3P will cost around $300 to $400 on its own.
Most people will probably buy it in a P3C Combo, though. In our H3C and P3C post, we guessed the P3C would land around $1,000 to $1,500. Add the AMS 3P, take off the usual combo discount, and a P3C Combo could come in around $1,200 to $1,800.
The AMS 3H should cost more than the 3P, since it looks like it adds a heater.
When Will the AMS 3P Come Out?
Bambu hasn't announced a date. The only date on the calendar is the H3C reveal on Tuesday, November 3, 2026, at 9 AM EST.
We still think Bambu will show the P3C that day too, and the AMS 3P would almost certainly come with it. The P3C passed FCC testing on September 15, and the AMS 3P followed on September 21.
The printed Quick Start Guide tells us something too. Manuals usually get printed near the end, so to us the AMS 3P looks close to ready.
How the AMS 3P Leaked
Here is how it played out, newest first:
| Date | What happened |
|---|---|
| Late Oct 2026 | Photos of a real AMS 3P and pages from its Quick Start Guide show up on r/BambuLab. The guide shows it sitting on a P3C. |
| Oct 23, 2026 | Bambu teases the H3C and sets the reveal for November 3 |
| Sept 22, 2026 | Fans spot the AMS 3H and AMS 3P on the FCC site and post about them on the Bambu Lab forum |
| Sept 21, 2026 | The FCC approves the AMS 3H and AMS 3P |
| Sept 15, 2026 | The FCC approves the P3C |
Should You Wait for the AMS 3P?
If you're planning to buy a P3C, yes. The AMS 3P looks like it was made for it, and the H3C reveal on November 3 is less than a week away. We think the P3C will show up there too.
If you were about to grab an AMS 2 Pro for a printer you already own, there's no reason to wait. The leak only shows the AMS 3P on the P3C, and it's shaped to sit on top of that printer and feed its tools.
If you already own an AMS 2 Pro and want a P3C, Bambu's store page says the AMS 2 Pro "will be compatible with all Bambu Lab products." We just don't know yet how a four-slot AMS would work with seven tools.
If you're planning multicolor prints for a P3C, our 3MF Viewer lets you check a model's colors before you slice it, and the 3D Print Cost Calculator helps you price the filament and print time.
Frequently Asked Questions
What is the Bambu Lab AMS 3P?
It's a new AMS from Bambu Lab with seven filament slots. A leaked Quick Start Guide shows it sitting on top of the P3C, Bambu's upcoming seven-tool printer. Bambu hasn't announced it yet.
How many slots does the AMS 3P have?
Seven. The leaked guide shows slots 2, 4 and 6 in the back row and slots 1, 3, 5 and 7 in the front row.
Which printer does the AMS 3P work with?
The leaked guide only shows it on the P3C. It sits on top of the printer and runs a separate filament tube to each of the P3C's seven tools. Bambu hasn't said if it works with any other printer.
Can the AMS 3P dry filament?
Probably not. Its FCC label lists 24 V at 1 A, a quarter of the AMS 2 Pro's 24 V at 4 A, and the AMS 2 Pro is the one with a dryer. The AMS 3H can plug into the wall, so it looks like the one that dries filament.
When is the AMS 3P release date?
Bambu hasn't announced one. Bambu reveals the H3C on November 3, 2026, and we think the P3C and AMS 3P could show up the same day.
How much will the AMS 3P cost?
Bambu hasn't shared a price. The AMS 2 Pro costs $299 and the AMS lite costs $199 in the US at regular price. We expect the AMS 3P to cost around $300 to $400 on its own.
What is the difference between the AMS 3P and AMS 3H?
Both passed FCC testing on September 21, 2026. The AMS 3P runs on 24 V at 1 A, while the AMS 3H can also plug into the wall at 200 W, which points to a dryer. The names suggest the 3P is for the P3C and the 3H is for the H3C.
