Anycubic Kobra S1 ACE 2 Pro Combo
- Price
- $459
- Score
- 8/10
- Wins
- 1/5
Anycubic Kobra S1 ACE 2 Pro Combo vs Elegoo Neptune 4 Pro
- Tied at 8 out of 10.
- Kobra S1 ACE 2 Pro Combo prints 1.2× the volume (250³ ÷ 225×225×265 = 1.16) for $200 ($459 − $259) more.
- Kobra S1 ACE 2 Pro Combo is faster, 600 vs 500 mm/s.
- Pick the Neptune 4 Pro if your prints fit in 26.5 cm.
Specs and US prices from the PrintPick catalog, checked 2026-09-29. Scores are PrintPick ratings out of 10.
Elegoo Neptune 4 Pro
- Price
- $259
- Score
- 8/10
- Wins
- 1/5
The verdict
Tied at 8/10. Buy the Neptune 4 Pro, $200 less.
The Neptune 4 Pro is the move if you want linear rails without paying Bambu prices. The Creality V3 KE is the comparison to make: same price, different ecosystems. Creality wins on community, Elegoo wins on hardware spec for the money.
Specs, side by side
Teal wins the row.
Kobra S1 ACE 2 Pro ComboAnycubic · FDM
vsNeptune 4 ProElegoo · FDM
| Kobra S1 ACE 2 Pro Combo | Spec | Neptune 4 Pro |
|---|---|---|
| $459 | Price | $259 (wins) |
| 15.6 L (wins) | Build volume | 13.4 L |
| 600 mm/s (wins) | Top speed | 500 mm/s |
| 0.05 mm | Finest layer | 0.05 mm |
| 13 kg | Weight | 10.5 kg |
Features
| Kobra S1 ACE 2 Pro Combo | Feature | Neptune 4 Pro |
|---|---|---|
| Yes | ACE 2 Pro multi-color system (up to 16 colors) | No |
| Yes | Fully-enclosed CoreXY architecture | No |
| Yes | Upgraded hotend (all-filament compatible) | No |
| Yes | Quiet print mode (~44dB) | No |
| Yes | 600mm/s ultra-fast printing | No |
| Yes | 250x250x250mm build volume | No |
| No | Klipper firmware | Yes |
| No | Auto bed leveling | Yes |
| No | Direct drive | Yes |
| No | PEI build plate | Yes |
| No | Linear rails | Yes |
Value math
$459 ÷ 15.6 L and $259 ÷ 13.4 L. Lower is more printer for the money.
| Kobra S1 ACE 2 Pro Combo | Spec | Neptune 4 Pro |
|---|---|---|
| $29.38 | $ per liter | $19.31 (wins) |
| $0.77 | $ per mm/s | $0.52 (wins) |
Scores out of 10
| Kobra S1 ACE 2 Pro Combo | Spec | Neptune 4 Pro |
|---|---|---|
| 9 | Value | 9 |
| 7 | Beginner Friendliness | 8 (wins) |
| 8 | Print Quality | 8 |
| 9 (wins) | Speed | 8 |
| 7 | Reliability | 7 |
| 8 | Overall | 8 |
Build space, front view, to one scale
- 250 × 250 × 250 mm
- 225 × 225 × 265 mm
What owners say
16 colors on an enclosed CoreXY for under €500 was not on my 2026 bingo card. Anycubic is swinging hard at Bambu's multi-color dominance.
Kobra S1 ACE 2 Pro Combo owner, Press announcement — awaiting independent reviewsLinear rails at $259 is wild. This thing flies.
Neptune 4 Pro owner, r/3DprintingElegoo came out swinging with the Neptune 4 series. Solid contender.
Neptune 4 Pro owner, Maker's Muse (YouTube)
Pros & Cons
Kobra S1 ACE 2 Pro Combo
- +16-color capable (4 colors standard; 16 colors requires 4x ACE 2 Pro units purchased separately). 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
- −Brand new product — early adopter risk on firmware and ACE 2 Pro reliability
- −Anycubic slicer still trails Bambu Studio on automation and profile polish
Neptune 4 Pro
- +Linear rails at $259 is a feature you normally pay $400+ for
- +Klipper pre-installed with decent out-of-box profiles
- +500mm/s sustained prints well with stock settings
- −Early units shipped with firmware bugs that needed patching
- −Elegoo's support community is a fraction of Creality's size
Buy these with it
A printer does nothing without these. Grab them in the same order.
- ELEGOO PLA filament, 1kgThe easy filament to start on. Prints at low temperatures and warps less.
- ELEGOO PETG filament, 1kgTougher and more heat tolerant than PLA, for parts that get handled or sit in the sun.
- SUNLU filament dryer S1 PlusWet filament causes stringing and rough surfaces. A dryer fixes that before you blame the printer.
Frequently Asked Questions
Is the Anycubic Kobra S1 ACE 2 Pro Combo better than the Elegoo Neptune 4 Pro?
They tie at 8/10. The Anycubic Kobra S1 ACE 2 Pro Combo suits multi-color and speed, while the Elegoo Neptune 4 Pro is aimed at budget and speed.
Which is better for beginners, Anycubic Kobra S1 ACE 2 Pro Combo or Elegoo Neptune 4 Pro?
The Elegoo Neptune 4 Pro is more beginner-friendly (8/10 vs 7/10) with easier setup and a gentler learning curve.
Is the Anycubic Kobra S1 ACE 2 Pro Combo worth $200 more than the Elegoo Neptune 4 Pro?
The Elegoo Neptune 4 Pro actually scores higher (8/10) despite costing $200 less. The Anycubic Kobra S1 ACE 2 Pro Combo only makes sense if you specifically need multi-color.
What's the main difference between Anycubic Kobra S1 ACE 2 Pro Combo and Elegoo Neptune 4 Pro?
Build volume (250x250x250mm vs 225x225x265mm) 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 Pro targets budget.