3D Printing InfoPrinter comparison
Anycubic Kobra S1 Max vs Bambu Lab A1
Compare hardware, build volume, printing specifications, dated prices and sources.
2 selected · all documented properties
Open these two in the interactive comparisonMore Anycubic Kobra S1 Max comparisonsMore Bambu Lab A1 comparisons
| Property | Anycubic Kobra S1 MaxCOREXY | Bambu Lab A1BEDSLINGER |
|---|---|---|
| Identity | ||
| Brand | Anycubic | Bambu Lab |
| Class | COREXY | BEDSLINGER |
| Identity & Market | ||
| Manufacturer & exact marketed model name (verify the exact product identity first) | Anycubic Kobra S1 Max[1] | Bambu Lab A1. Store title: "Bambu Lab A1 3D Printer"; spec page header "Bambu Lab A1 - Technical Specifications"[2] |
| Release date (announcement and actual shipping) | Listed on the Anycubic store from 16 January 2026 (Shopify publish date)[3] | Announced and first shipped in the northern autumn/winter of 2023. Bambu Lab's own recall notice states A1 units were supplied from 1 December 2023; Tom's Hardware published its A1 review on 14 December 2023, so retail units were in reviewers' hands by then[4][5] |
| Street price (USD; dated snapshot per entry) | $699.00 with a US plug on store.anycubic.com, Aug 2026, against a compare-at price of $899.00 ($804.00 for the EU plug variant)[3] | From $299.00 (base A1) on the Bambu Lab US store, Aug 2026, during an advertised Back-to-School sale; the A1 product page shows $399.00 with the A1 Combo (A1 + AMS lite) swatch selected[6][7] |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | The large enclosed Anycubic. Against the Kobra S1: 350 mm cube against 250 (Anycubic claims 174% more volume), 350 C hardened-steel nozzle against 320 C, 65 C active chamber heating that the S1 lacks entirely, a titanium-alloy throat tube and hardened-steel extruder gears, an activated carbon filter, 720p camera against 480p, and 25.7 kg against 9.37 kg. Its engineering-filament list is correspondingly longer[1][8] | Two SKUs on one product page: A1 (printer only) and A1 Combo (adds the AMS lite four-spool unit); the printer hardware is identical. Do NOT confuse with the A1 mini (180 mm cube, single Z leadscrew, 80 C bed, 2.4-in screen) or the newer A2L (330x320x325 mm). Contamination example found in the wild: Tom's Hardware's A1 review spec box prints a 2.4-inch screen and a 385x410x430 mm footprint (both A1 mini figures) and titles a section "Included in the box: Bambu Lab A1 Mini", while Bambu's own A1 spec sheet says 3.5-inch screen and 465x410x430 mm[2][5][7] |
| Market position: superseded? successor announced? | Not documented | Still sold new in Aug 2026 alongside the newer and larger A2L ($469 base), which Bambu positions as the mega-size A-series machine[6][9] |
| Physical & Frame | ||
| Build volume X×Y×Z (mm) — advertised vs actually usable | 350 x 350 x 350 mm[1] | 256 x 256 x 256 mm (manufacturer figure)[2] |
| Machine footprint (mm) & clearance needed (cable/spool overhang) | 502.7 x 483 x 584 mm[1] | 465 x 410 x 430 mm per Bambu's own tech-spec sheet. Tom's Hardware's spec box prints 385 x 410 x 430 mm for the same machine - that is the A1 mini's width, treat Bambu's figure as authoritative. Add clearance behind for Y-axis bed travel and above for the spool[2][5] |
| Net weight (kg) | 25.7 kg net, 31 kg packaged[1] | 8.3 kg net[2] |
| Frame construction & material | Not documented | Steel plus extruded aluminium chassis; Bambu markets all-metal rails and a cover-protected drive system[2][10] |
| Enclosure: open / enclosed; panel material; door/lid | Fully enclosed CoreXY with 65 C active chamber heating, dual external-circulation cooling fans and an activated carbon filter, plus a temperature and moisture display[1] | Open frame, no enclosure or door; no official enclosure is sold for the A1[2] |
| Passive chamber temperature reached (if enclosed; measured values preferred) | 65 C active chamber heating (manufacturer figure, actively heated rather than passive)[1] | Not documented |
| Kinematics & Motion Hardware | ||
| Kinematics (bedslinger i3 / CoreXY / other) | CoreXY (stated outright in Anycubic's specification table)[1] | Cartesian bed-slinger: toolhead moves in X on the gantry beam, heatbed moves in Y, gantry moves in Z. Bambu's own wiki calls it a Cartesian coordinate motion system; Bambu's marketing page describes it as a "Bed Slinger with CoreXY Speed", which is a comparison, not a kinematic claim[11][10] |
| X-axis guide type (rods / linear rails / V-wheels; size) | Not documented | Linear rail: "a high-precision linear rail and a beam", toolhead on a linear guide slider (Bambu wiki). Rail size not published[11] |
| Y-axis guide type | Not documented | Linear rail: heatbed mounted on a guide-rail slider, belt-driven in Y[11] |
| Z-axis: leadscrew count & type, sync mechanism, anti-backlash | Not documented | Dual linear rods plus dual leadscrews with nuts, both leadscrews driven from one stepper through a synchronous belt with a quick tensioner and a tension-detection algorithm[11] |
| Belts (type, width, e.g. Gates?) | Not documented | Three adjustable belt tensioners (X, Y, Z); a Belt Tension Monitor watches tension and reports out-of-range belts[11] |
| Stepper drivers (exact model e.g. TMC2209; UART/SPI; sensorless homing?) | Not documented | Not published. Bambu's wiki says only that the mainboard "incorporates stepper motor drivers"; no driver part number is given and no teardown source was found that names one[11] |
| Speed & Acceleration | ||
| Max print speed (claimed, mm/s) | 600 mm/s maximum print speed (manufacturer claim), 300 mm/s recommended[1] | 500 mm/s max toolhead speed (manufacturer claim); no independent measurement found[2] |
| Recommended/typical print speed | 300 mm/s recommended print speed (manufacturer figure)[1] | Not documented |
| Max acceleration (claimed, mm/s²) | 20000 mm/s2 maximum acceleration, 10000 mm/s2 recommended[1] | 10000 mm/s2 max toolhead acceleration (manufacturer claim). Tom's Hardware notes the moving-bed mass is why the A1 does not reach the P1S/X1 20000 mm/s2 figure[2][5] |
| Max volumetric flow claimed (mm³/s) | Not documented | 28 mm3/s claimed, measured by Bambu on a 150x150 mm single-wall model in Bambu ABS at 280 C[2] |
| Extruder | ||
| Type (direct drive / bowden) & design name | Direct drive ("short distance extrusion") with hardened-steel extruder gears, which Anycubic rates at six times the life of brass on carbon-fibre filament[1] | Direct drive, hardened-steel extruder gears, integrated in the toolhead with a filament cutter and filament hub[2][11] |
| Hotend & Nozzle | ||
| Hotend design (proprietary/standard; quick-swap mechanism?) | Quick-release hotend with a titanium-alloy throat tube; 0.4 mm and 0.6 mm nozzles supplied, 0.25 and 0.8 mm optional; hardened steel[1] | All-metal integrated hotend (nozzle and heatsink combined in one unit) with a quick-swap clip - Bambu markets it as popping in and out with one clip. Stainless-steel nozzle, 0.4 mm included, 0.2/0.6/0.8 mm optional[2][10][11] |
| Max nozzle temp claimed AND firmware max temp limit (both values) | 350 C maximum nozzle temperature[1] | 300 C claimed max hot-end temperature; firmware limit not published[2] |
| Heated Bed & Surface | ||
| Max bed temp claimed AND firmware limit | 120 C maximum hotbed temperature on a PEI spring steel build plate[1] | 100 C max build-plate temperature (both the spec sheet and the wiki give 100 C)[2][11] |
| Bed surface (material, texture, coating), single/double-sided | Not documented | Textured PEI plate included; Bambu Cool Plate, High Temperature Plate and Dual-Texture PEI Plate also compatible[2] |
| Leveling & Z-Offset | ||
| Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe) | LeviQ 3.0 auto-levelling[1] | Nozzle-touch probing: the hotend carries an eddy-current sensor that detects nozzle-to-bed contact, giving both automatic bed mesh and automatic Z-offset with no paper method. The same eddy-current sensor doubles as the Y-axis resonance sensor[11][5] |
| Filament Handling & Detection | ||
| Filament runout sensor (type, location) | Filament detection with auto resume, entanglement detection and power-loss resume[1] | Yes - filament run-out sensor, plus filament odometry and a filament-tangle sensor. The tangle sensor is a Hall sensor reading a magnet in the toolhead filament hub: excessive feed resistance pulls the hub down, moving the magnet toward the sensor[2][11] |
| Multi-material/multi-color capability or official upgrade path | Up to 16-colour printing with ACE 2 Pro units, sold separately[1] | Optional AMS lite (four spools, sold in the A1 Combo); connecting the enclosed-printer AMS / AMS 2 Pro / AMS HT to an A1 additionally requires an AMS HUB accessory (SA013)[7] |
| Cooling & Air Handling | ||
| Part-cooling fan(s): count, size, ducting design | Not documented | One custom 5015 centrifugal part-cooling fan with two opposing air outlets aimed at the nozzle; closed-loop (RPM-feedback) control[2][11] |
| Chamber/exhaust fan & filtration (activated carbon / HEPA) | Activated carbon filter for odour removal; dual external-circulation cooling fans[1] | Not documented |
| Electronics & Power | ||
| Mainboard model & MCU (exact chip markings if teardowns exist) | Not documented | Single mainboard carrying a low-power dual-core SoC (with Wi-Fi and Bluetooth basebands and RF), a dual-core MCU and a single-core MCU, plus the stepper drivers. Bambu's spec sheet names the motion controller as a dual-core Cortex-M4. Exact chip markings not published[2] |
| Total rated power draw | Not documented | 100-240 VAC 50/60 Hz; max power 1300 W at 220 V, 350 W at 110 V. Bed heater wattage is not published separately[2] |
| Firmware & Openness | ||
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Kobra OS with pressure advance and flow calibration supported[1] | Closed-source proprietary firmware - not a Klipper or Marlin derivative, and no printer-firmware source is published. The bambulab GitHub organisation carries 11 repositories (Bambu Studio, wxWidgets/boost/ffmpeg forks, the wiki); none is printer firmware. Updates are delivered over the air via Bambu Studio / Bambu Handy[12] |
| Connectivity, UI & Camera | ||
| Display: size, type, touch? | 4.3-inch capacitive touchscreen[1] | 3.5-inch 320x240 IPS touchscreen[2] |
| On-device UI capabilities (model preview, per-object controls, etc.) | Touchscreen plus slicing software, Anycubic app and U-disk; AI spaghetti detection using an in-house algorithm and the 720p camera[1] | Touchscreen UI plus Bambu Handy mobile app and Bambu Studio PC application; Bambu describes the on-device UI as a simplified guided touchscreen system[2][10] |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | Printer UI, slicing software, Anycubic app and U-disk[1] | Wi-Fi 2.4 GHz only (IEEE 802.11 b/g/n, 2412-2472 MHz), Bambu-Bus for the AMS lite, microSD card slot. No Ethernet, no USB host port[2] |
| Camera: built-in / optional? Resolution & framerate (verify — marketing often omits real fps) | Standard HD camera, 720p, used for real-time AI anomaly detection[1] | Built-in low-rate monitoring camera, up to 1080p, timelapse supported; Bambu's marketing calls out a physical lens cover. Frame rate is not stated for the A1 (the P1 series camera is specified at 0.5 fps)[2][10] |
| Calibration Routines & QoL | ||
| Assembly level & time from unbox to first print | Ships 95% pre-assembled; Anycubic claims unbox to print in 10 minutes[1] | About 95% pre-assembled; a handful of screws attach the gantry to the base, then the filament wiper and spool holder[5] |
| Materials Support | ||
| Officially supported filament list | Consumer grades: PLA, PETG, TPU (95A), TPU for ACE, PET, PLA-CF, PETG-CF, PVA. Engineering grades: ABS, ASA, PC, PA, PA6-CF, PC-CF/GF, PET-CF[1] | Ideal: PLA, PETG, TPU, PVA. Not recommended: ABS, ASA, PC, PA, PET, carbon/glass-fibre reinforced polymers - the machine is open-frame and the bed stops at 100 C[2] |
| Safety | ||
| Known safety incidents / recalls / fire reports (with sources) | Not documented | Recalled in the US in cooperation with the CPSC: A1 units sold before 30 January 2024 (serial numbers with 'A' as the sixth digit) could suffer heatbed cable damage leading to a short circuit, electric shock or fire. 19 reports of damaged cables, one with observed sparking, no injuries. Remedy was refund plus $80 voucher, or heatbed+cable replacement by a trained technician plus $120 voucher. Current production ships a Kevlar-reinforced heatbed cable with thicker insulation and extended strain relief[4][7] |
| Noise & Power Consumption | ||
| Noise: claimed dB and independently measured dB (distance/method) | 48 dB or less in standard mode, as low as 45 dB in quiet mode - manufacturer figures with no distance or method stated[1] | Manufacturer claim only: bambulab.com states "Silent Mode Under 48 dB" with active motor noise cancelling; the US store page for both the A1 and the A1 mini carries identical copy claiming "49dB Whisper-Quiet Operation". No microphone-based independent measurement with a stated distance was found; Tom's Hardware only says it is "much more quiet than the current crop of speed freak machines"[10][7][5] |
| Reliability, Support & Ecosystem | ||
| Warranty length & support reputation (evidence, not vibes) | One year on the complete machine (excluding gifted and second-hand machines), with component warranty periods that vary by part; the period starts on the delivery date and is suspended while a replacement is in transit. Anycubic states it will follow longer local statutory periods where they apply[13] | 2-year limited warranty for consumers in the US, Canada, the EU, Switzerland, Norway and Iceland; 1 year in the rest of the world. Bambu Lab's own policy records the US/Canada term as a 2026 extension from one year to two[14] |
| Independently Measured Performance | ||
| Review scores from major outlets (list outlet + score + date) | Not documented | Tom's Hardware: Editor's Choice, rating 4.5 out of 5 in the page's structured data (14 December 2023)[5] |
Manufacturer claims, independent measurements, packages and test conditions retain their source wording. FDM linear speed and resin vertical speed use different units and are not directly comparable. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.
Sources for this comparison
- Anycubic Kobra S1 Max product page (Specifications table) store.anycubic.com · 2026-08 · vendor
- Bambu Lab A1 - Technical Specifications bambulab.com · 2026-08 · vendor
- Anycubic Kobra S1 Max Shopify product JSON (variant prices and store publish date) store.anycubic.com · 2026-08 · vendor
- Bambu Lab - Bambu Lab Recalls A1 3D Printers in the US bambulab.com · 2026-08 · vendor
- Tom's Hardware - Bambu Lab A1 Review, Denise Bertacchi, 14 December 2023 tomshardware.com · 2026-08 · review
- Bambu Lab US Store - 3D Printers collection listing (base prices, Aug 2026) us.store.bambulab.com · 2026-08 · vendor
- Bambu Lab A1 store page (A1 / A1 Combo variants) us.store.bambulab.com · 2026-08 · vendor
- Anycubic Kobra S1 product page (Specifications table) store.anycubic.com · 2026-08 · vendor
- Bambu Lab - Compare all 3D printers (A2L / X2D / H2C columns) bambulab.com · 2026-08 · vendor
- Bambu Lab A1 product page bambulab.com · 2026-08 · vendor
- Bambu Lab Wiki - A1 introduction wiki.bambulab.com · 2026-08 · doc
- GitHub - bambulab organisation repository list (11 repos, checked Aug 2026) github.com · 2026-08 · doc
- Anycubic refund and warranty policy store.anycubic.com · 2026-08 · vendor
- Bambu Lab Warranty Policy bambulab.com · 2026-08 · vendor