Bambu Lab H2S vs Qidi Max4
Researched by Riley Hart · prices checked Nov 4, 2026
As of Nov 4, 2026, the Bambu Lab H2S costs $1,049 and the Qidi Max4 costs $1,049. The Qidi Max4 scores higher in our ranking (6.8 vs 6.1 out of 10). Pick the Bambu Lab H2S for large prints and engineering filaments. Pick the Qidi Max4 for makers who print large parts in ABS, ASA, nylon or carbon fiber blends. The Qidi Max4 wins 3 of 5 points we can measure (1 tied).
Who wins, point by point
The Qidi Max4 wins 3 of 5 points we can measure (1 tied). Built from today's prices, the specs and independent tests for these two robots.
| H2S | Max4 | Winner | |
|---|---|---|---|
| Price today | $1,049 | $1,049 | Tie |
| Build volume | 340 x 320 x 340 mm | 390 x 390 x 340 mm | Max4 |
| Top print speed | 1000 mm/s | 800 mm/s | H2S |
| Max nozzle temp | 350°C | 370°C | Max4 |
| Release year | 2025 | 2026 | Max4 |
- You care most about top print speed (1000 mm/s vs 800 mm/s)
- Best for large prints and engineering filaments
- You care most about build volume (390 x 390 x 340 mm vs 340 x 320 x 340 mm)
- You care most about max nozzle temp (370°C vs 350°C)
- You want the newer model (2026 vs 2025)
- Best for makers who print large parts in ABS, ASA, nylon or carbon fiber blends
- Build volume
- 340 x 320 x 340 mm
- Max speed
- Up to 1,000 mm/s
- Multicolor
- Yes
- Enclosure
- Yes
Big single nozzle enclosed printer for large and engineering prints
Full Bambu Lab H2S review, pros and cons →- Build volume
- 390 x 390 x 340 mm
- Max speed
- Up to 800 mm/s
- Multicolor
- Optional QIDI Box
- Enclosure
- Yes
Big 390 mm enclosed CoreXY with 65 C chamber for engineering filament
Full Qidi Max4 review, pros and cons →Side by side
| Bambu Lab H2S | Qidi Max4 | |
|---|---|---|
| Price | $1,049 | $1,049 |
| 3 year cost | $1,049 | $1,049 |
| Our score | 6.1/10 | 6.8/10 |
| Rank in 3D printers | #28 | #22 |
| Status | on sale | on sale |
| Warranty | n/a | Not checked |
| Build volume | 340 x 320 x 340 mm (Bambu Lab) | 390 x 390 x 340 mm (Qidi, AndroidPCtv) |
| Print speed | Up to 1,000 mm/s toolhead speed, 20,000 mm/s2 acceleration (Bambu Lab) | Up to 800 mm/s, 30,000 mm/s2 acceleration, 40 mm3/s flow (Qidi); AndroidPCtv printed a PLA Benchy in 18 minutes |
| Multi color | Yes with AMS 2 Pro (AMS Combo version); single nozzle, so color changes purge filament. CGMagazine says chained AMS units can hold 16 or more spools | Optional QIDI Box, up to 16 filaments with 4 boxes (Qidi); Nikktech found multi color prints wasted about 9 times the filament used in the models |
| Enclosure | Yes, fully enclosed with active chamber heating up to 65 C (Bambu Lab) | Yes, enclosed with 65 C active chamber heating and G3, H12 HEPA and carbon filter (Qidi) |
| Auto leveling | Yes, automatic calibration; first run calibration took about 30 minutes for The Gadgeteer | Yes, load cell sensor in the hotend (Qidi) |
| Max nozzle temp | 350 C (Bambu Lab) | 370 C, 0.4 mm bimetal nozzle (Qidi) |
| Heated bed | Yes, up to 120 C (CGMagazine, The Gadgeteer) | Yes, up to 120 C, double sided PEI plate (Qidi, AndroidPCtv) |
| Filament types | PLA, PETG, TPU, ABS, ASA, PC, PPA, PA6 GF, PAHT CF and other fiber filled engineering filaments (Bambu Lab) | PLA, PETG, TPU 95A, ABS, ASA, PA, PC, carbon and glass fiber blends, PPS-CF (Qidi) |
| Connectivity | Cloud, LAN, full offline mode, USB drive (not included); MQTT access in Developer Mode (Bambu Lab) | Dual band Wi-Fi, Ethernet, USB drive, QIDI Cloud (Qidi) |
| Camera | Yes, 3 cameras including a top down BirdsEye camera and a toolhead camera, with AI failure detection (Bambu Lab) | Yes, 1080p with AI spaghetti detection (Qidi) |
| Noise | Below 50 dB (Bambu Lab claim, measured at 1 m) | About 56 dB normal, 62 dB with Polar Cooler, 65 dB with the QIDI Box (AndroidPCtv) |
| Assembly | Ships assembled; CGMagazine says unboxing needs two people and setup with calibration can take more than 30 minutes | n/a |
| Weight | 30 kg printer alone, 40.7 kg AMS combo (The Gadgeteer) | 40 kg (46.5 kg Combo); 558 x 578 x 612 mm (Qidi) |
| Best for | large prints and engineering filaments | makers who print large parts in ABS, ASA, nylon or carbon fiber blends |
| Skip if | you print lots of multi color models | you want a quiet printer or have little space |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Bambu Lab H2S
- CGMagazine (8/10): Called it refined and reliable. Real world print times were about 20 to 30% shorter than typical fast CoreXY profiles and aggregated XY error measured under 0.5 mm. Multi color prints ran a few hours longer than on the H2D on day long jobs, with considerable purge waste. Source
- The Gadgeteer: Ran the H2S AMS 2 Pro combo for about a month, often around the clock. First calibration took about 30 minutes, PETG CF prints finished well and the AMS 2 Pro was nearly error free. Downsides were purge waste on multi color jobs and the pricey optional Vision Encoder. Source
Qidi Max4
- AndroidPCtv (90%): PLA Benchy in 18 minutes with clean layers. A three filament keychain took about 14 hours versus about 2 hours in one filament. Noise about 56 dB, 62 dB with Polar Cooler and 65 dB with QIDI Box. Source
- Nikktech: Golden Award. Called its prints the smoothest the reviewer had tested. Multi color prints wasted roughly 9 times the filament needed for the models. Software glitches blocked timelapse recording. Source
Questions buyers ask
Which is better, the Bambu Lab H2S or the Qidi Max4?
The Qidi Max4 scores higher in our ranking (6.8 vs 6.1 out of 10). Pick the Bambu Lab H2S for large prints and engineering filaments. Pick the Qidi Max4 for makers who print large parts in ABS, ASA, nylon or carbon fiber blends.
What is the difference between the H2S and the Max4?
Build volume: 340 x 320 x 340 mm (Bambu Lab) on the H2S, 390 x 390 x 340 mm (Qidi, AndroidPCtv) on the Max4. Print speed: Up to 1,000 mm/s toolhead speed, 20,000 mm/s2 acceleration (Bambu Lab) on the H2S, Up to 800 mm/s, 30,000 mm/s2 acceleration, 40 mm3/s flow (Qidi); AndroidPCtv printed a… on the Max4. Multi color: Yes with AMS 2 Pro (AMS Combo version); single nozzle, so color changes purge filament… on the H2S, Optional QIDI Box, up to 16 filaments with 4 boxes (Qidi); Nikktech found multi color… on the Max4.
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