Early in release cycle — no urgency to wait
Best for: Professional makers and studios who need Bambu's largest enclosed build volume for high-throughput production, engineering materials, and optional AMS multicolor — without the complexity of dual-nozzle printing.
Full details →Late in cycle — but an upgrade kit is available. Existing owners can upgrade without buying new
🔧 Upgrade kit available — from MK4, MK3.5
Best for: Makers who value open-source hardware, community support, long-term repairability, and battle-tested reliability over raw speed or multicolor features.
Full details →| Bambu Lab H2S | Prusa Research MK4S | |
|---|---|---|
| Tier | Professional | Prosumer |
| Motion | CoreXY | BedSlinger |
| Build Volume | 340 × 320 × 340 mm | 250 × 210 × 220 mm |
| Max Speed | 1000 mm/s | 500 mm/s |
| Multicolor | ✅ 4 slots | ❌ No |
| Enclosure | ✅ | ❌ |
| Auto Calibration | ✅ | ✅ |
| Open Source | ❌ | ✅ |
| Upgrade Kit | — | 🔧 From MK4, MK3.5 |
| Materials | PLA, PETG, ABS, ASA, TPU, PA, PA-CF, PC, PETG-CF, PPS | PLA, PETG, ABS, ASA, TPU, PA, PC |
| Released | Aug 26, 2025 | Mar 20, 2024 |
| Cycle length | ~730 days | ~730 days |
| Cycle advice | Buy | Upgrade Kit |
| Deals advice | Caution | Buy |
| Next model | — | Prusa MK5 (Expected 2027) |
The H2S offers 220% the print volume of the X1C. At 1000 mm/s it is also Bambu's fastest printer, making it the top choice for high-throughput professional production.
The enclosed chamber with active heating handles the full engineering filament spectrum — ABS, ASA, PA, PA-CF, PC, and PPS — with consistent results across the full build plate.
The H2S supports up to 12 AMS units (4 AMS 2 Pro + 8 AMS HT), enabling 24-filament printing for large-format multicolor production.
MK4 and MK3.5 owners can upgrade to MK4S specs without purchasing a whole new printer. This is Prusa's commitment to owners and is unique in the industry at this level.
Firmware, PCB schematics, hardware designs, and slicing profiles are all published under open licenses. You own the printer completely.
Prusa's forum, knowledge base, and repair guides are unmatched. Parts are stocked and available for years after purchase.