Anycubic Kobra S1 Max

Three numbers define this machine: a 350 mm cube, a 350 °C nozzle and a chamber driven to 65 °C. That combination — 42.9 litres of actively heated space — is otherwise Creality K2 Plus or Bambu H-series territory, and the Kobra S1 Max undercuts both. Sixty-five degrees is the temperature at which ABS and ASA stop curling off the plate on large parts, and it is the whole reason to buy a big enclosed printer rather than a big open one. The 120 °C bed matches. Against the K2 Plus it is $200 cheaper as a four-colour combo, with the same build volume and a 5 °C hotter chamber; against the H2S it is a little over half the price. What it does not have is a published flow rate, a settled reliability record, or software as mature as either competitor's.

Approx. price: ~$699
Build volume: 42.9 L
Per litre: $16
True multi-material price: ~$899

Real speed ceiling

Not published

Anycubic does not publish a volumetric flow rate for the Kobra S1 Max, so its 600 mm/s claim cannot be checked against what the hotend can actually melt. We do not estimate one.

LAN-only modeKlipper firmware

Best forLarge ABS, ASA and nylon parts where a driven chamber matters and the budget will not stretch to an H-series.

Specifications

Build volume: 350 × 350 × 350 mm
Volume: 42.9 L
Motion: CoreXY
Max speed: 600 mm/s
Acceleration: 20,000 mm/s²
Max flow: Not published
Hotend max temp: 350 °C
Bed max temp: 120 °C
Enclosure: Heated chamber to 65 °C
Extruder: direct drive
Auto level: strain-gauge
Hardened nozzle: Yes, as standard
Input shaping: Yes

Materials, control and build

Multi-material: ACE 2 Pro, 4 slots
True multi-material price: ~$899 (+~$200)
Firmware: Klipper
LAN-only mode: Yes
Cloud: Optional
Camera: Yes
Assembly: Pre-assembled
Weight: 25.7 kg
Footprint: 502.7 × 483 × 584 mm

Features

350 mm cube — 42.9 litres — behind a chamber driven to 65 °C
350 °C hardened nozzle and a 120 °C bed
ACE 2 Pro four-spool changer with drying
Klipper firmware, camera, strain-gauge levelling
CoreXY motion at a claimed 600 mm/s
Filament runout detection and power-loss recovery

What it does well

A 65 °C driven chamber over 42.9 litres, at a price no other machine here matches
350 °C nozzle and 120 °C bed make the engineering-materials claim genuine rather than aspirational
$200 below the Creality K2 Plus as a four-colour combo, for the same volume and a hotter chamber
ACE 2 Pro adds drying, which large ABS and nylon prints particularly benefit from
A little over half the price of the Bambu H2S for a comparable envelope

Where it gives ground

No published flow rate on a machine whose whole case is large parts printed quickly
Anycubic's software remains the least polished of the ecosystems at this price
Too new for reliability data, and a driven chamber adds failure modes
The four-colour combo is $899, $200 over the bare printer; an ACE 2 Pro bought on its own is $249

The points above are read off published specifications, not from owner reports.

What owners report

No owner discussion has been collected for the Anycubic Kobra S1 Max yet. Everything on this page comes from the manufacturer’s published specifications and the sources listed under how we compare. We would rather say so than write sentiment we have not read.