Anycubic Kobra S1 ACE 2 Pro Combo vs Elegoo Neptune 4 Max
Head-to-head 3D printer comparison, 2026
The Anycubic Kobra S1 ACE 2 Pro Combo and Elegoo Neptune 4 Max are both FDM 3D printers competing in the same price bracket, $499 vs $469. We scored both across value, beginner-friendliness, quality, speed, and reliability. Here's the full breakdown.
Our Verdict
The Anycubic Kobra S1 ACE 2 Pro Combo takes the crown with 8/10 vs 7/10. It pulls ahead in Beginner Friendliness, Print Quality, Speed. That said, the Elegoo Neptune 4 Max saves you $30.
Score Breakdown
Specifications
| Spec | Anycubic Kobra S1 ACE 2 Pro Combo | Elegoo Neptune 4 Max |
|---|---|---|
| Price | $499 | $469 |
| Type | FDM | FDM |
| Build Volume | 250 x 250 x 250 mm | 420 x 420 x 480 mm |
| Print Speed | 600 mm/s | 500 mm/s |
| Min Resolution | 0.05 mm | 0.05 mm |
| Weight | 13 kg | 22 kg |
| Overall Score | 8/10 | 7/10 |
Pros & Cons
Anycubic Kobra S1 ACE 2 Pro Combo
+16 colors out of the box — doubles the 8-color S1 Combo and quadruples the Bambu A1 Combo (4)
+Fully enclosed CoreXY handles ABS, ASA, and engineering filaments without warping
+44dB quiet mode is unusually low for a 600mm/s CoreXY — apartment-friendly
+Upgraded hotend is rated for the full Anycubic filament range
+Early bird €459 undercuts the Bambu P2S (€549) and matches pricing of the older 8-color S1 Combo
−Brand new product — early adopter risk on firmware and ACE 2 Pro reliability
−Anycubic slicer still trails Bambu Studio on automation and profile polish
−ACE 2 Pro adds significant desk footprint
−Early bird pricing ends May 31 — regular price expected to climb
Elegoo Neptune 4 Max
+420x420x480mm with Klipper for $469: the price-to-volume ratio is hard to beat
+Direct drive on a bed this large is unusual and useful for flexible materials
+Klipper gives you full control to tune speed and acceleration for the mass of this bed
+Prints full armor breastplates in a single run
−Open frame at this scale means ABS warping will ruin prints without serious prep
−The sheer footprint means a dedicated table minimum; don't try to share desk space
−Slower effective speeds on a 420mm heated bed: physics wins eventually
Who Should Buy Which?
Choose the Anycubic Kobra S1 ACE 2 Pro Combo if you want:
- A great printer for multi-color
- A great printer for speed
- A great printer for enclosed
- ACE 2 Pro multi-color system (up to 16 colors)
- Fully-enclosed CoreXY architecture
- Upgraded hotend (all-filament compatible)
Choose the Elegoo Neptune 4 Max if you want:
- A great printer for large-prints
- A great printer for budget
- A great printer for cosplay
- Klipper firmware
- Auto bed leveling
- Direct drive
Frequently Asked Questions
Is the Anycubic Kobra S1 ACE 2 Pro Combo better than the Elegoo Neptune 4 Max?
By the numbers, the Anycubic Kobra S1 ACE 2 Pro Combo scores higher (8/10). But "better" depends on your use case, the Elegoo Neptune 4 Max may be the smarter buy if you need large-prints.
Which is better for beginners, Anycubic Kobra S1 ACE 2 Pro Combo or Elegoo Neptune 4 Max?
The Anycubic Kobra S1 ACE 2 Pro Combo is more beginner-friendly (7/10 vs 5/10) with easier setup and a gentler learning curve.
Is the Anycubic Kobra S1 ACE 2 Pro Combo worth $30 more than the Elegoo Neptune 4 Max?
The Anycubic Kobra S1 ACE 2 Pro Combo scores higher overall (8/10 vs 7/10). The extra $30 gets you 16 colors out of the box — doubles the 8-color s1 combo and quadruples the bambu a1 combo (4).
What's the main difference between Anycubic Kobra S1 ACE 2 Pro Combo and Elegoo Neptune 4 Max?
Build volume (250x250x250mm vs 420x420x480mm) and print speed (600 vs 500 mm/s). The Anycubic Kobra S1 ACE 2 Pro Combo is best for multi-color; the Elegoo Neptune 4 Max targets large-prints.