Anycubic Kobra S1 Combo: The Budget Enclosed CoreXY With ACE Pro
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The Kobra S1 Combo is a 250 × 250 × 250 mm enclosed CoreXY with a 320 °C quick-release hotend, 600 mm/s, 20000 mm/s² and the ACE Pro, a four-spool feeder that also dries filament. It is the cheapest enclosed multi-colour Combo from a major brand. Owner reports are mixed on out-of-box reliability; it rewards a careful first setup. The newer ACE 2 Pro version is the one to buy now.
Where to buy
Specifications
| Item | Value | Note |
|---|---|---|
| Build volume | 250 × 250 × 250 mm | Slightly under the 256 mm class |
| Max nozzle temperature | 320 °C | Tools-free quick-release hotend |
| Max bed temperature | 120 °C (manufacturer) | Verify on the current listing |
| Speed / acceleration | 600 mm/s / 20000 mm/s² | Recommended 300 mm/s |
| Enclosure | Yes, passive | Chamber fan |
| Camera | Yes | Timelapse, monitoring |
| Multi-material | ACE Pro, 4 spools; two units for 8 | ACE Pro heats to dry filament |
| Noise | 44 dB claimed in quiet mode | |
| Firmware | Anycubic (Klipper based) |
What the ACE Pro adds that others do not
Bambu’s first-generation AMS and Creality’s CFS store filament; the ACE Pro also heats it, so PETG and nylon dry in the feeder. Bambu matched this with the AMS 2 Pro. For anyone in a humid room this is the most useful feature on the machine, and the reason to buy the Combo rather than the printer alone. See drying filament.
What owners report
- Print quality on PLA and PETG in the same class as the K1C and P1S once tuned.
- Early units had firmware rough edges and ACE Pro feed errors; updates improved both. Check the firmware version on arrival.
- First-layer consistency depends on a clean nozzle tip for the contact probe; see first-layer problems.
- Spares and mods are thinner than for Creality or Bambu; see Kobra S1 upgrades.
Kobra S1 or P1S
Same idea, different maturity. The P1S has the deeper ecosystem and more consistent calibration; the Kobra S1 Combo has the hotter hotend, the drying feeder and usually the lower price. Full comparison at Kobra S1 vs P1S.
The units in the box
The listings are the Kobra S1 Combo with the original ACE Pro, the Kobra S1 ACE 2 Pro Combo, and the Kobra S1 printer alone.
FAQ
Does the Kobra S1 print ABS? Yes; enclosed with a 320 °C hotend.
Can I add the ACE Pro later? Yes; sold separately.
Which plate does it use? A 250 mm class plate; 256 mm Bambu plates do not fit.
LayerWalker
Print defect diagnosis, calibration procedures and parts that actually fit. Corrections welcome through the contact page.
