The Bambu Lab H2S and Qidi Tech Max4 are cross-brand rivals: both are professional-tier printers, listed $200 apart. Both are enclosed CoreXY printers with 4-slot multicolor and automatic calibration. The H2S costs $200 more and gets you a top speed of 1,000 mm/s (vs 800) and extra engineering materials (PPS); the Max4 answers with 40% more build volume and extra engineering materials (PPS-CF).
Mid-cycle — watch for announcements before buying
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 →First-generation product — recently released, still early days
Best for: Professional makers and small studios who need the maximum enclosed build volume in Qidi's lineup for large engineering parts, architectural models, or batch production — at a price point below the Bambu H2S.
Full details →| Bambu Lab H2S | Qidi Tech Max4 | |
|---|---|---|
| Pricing | ||
| Starting Price | $1,249 | ★ $1,049 |
| Print Specs | ||
| Tier | Professional | Professional |
| Motion | CoreXY | CoreXY |
| Build Volume | 340 × 320 × 340 mm | ★ 390 × 390 × 340 mm |
| Max Speed | ★ 1000 mm/s | 800 mm/s |
| Multicolor | ✅ 4 slots | ✅ 4 slots |
| Enclosure | ✅ | ✅ |
| Auto Calibration | ✅ | ✅ |
| Open Source | ❌ | ❌ |
| Upgrade Kit | — | — |
| Buy Timing | ||
| Released | Aug 26, 2025 | Dec 1, 2025 |
| Cycle length | ~730 days | — |
| Cycle advice | Caution | Buy |
| Deals advice | Buy | Buy |
| Next model | — | — |
The H2S was released on Aug 26, 2025, 443 days ago. Its previous release cycle ran about 730 days, so it is 61% of the way through — roughly 287 days before a successor would be due at that pace.
The Max4 was released on Dec 1, 2025, 346 days ago. It is a first-generation product, so there is no earlier cycle to predict its successor from.
On timing alone, the Max4 is the safer buy right now — it launched only 346 days ago, while the H2S is mid-cycle (61% through).
Cycle and deal status as of November 12, 2026. See the launch calendar →
The Max4 lists at $1,049 and the H2S at $1,249 — $200 apart, so the H2S costs 19% more.
Per litre of build volume, that works out to $34 for the H2S versus $20 for the Max4 — the Max4 is both cheaper and roomier, so it wins on value outright.
With both in sale windows until Dec 5, 2026, this is a good moment to buy either — compare the live sale prices before you decide.
This one is close on paper. If cost matters more than print time, save the $200; if throughput matters, the H2S's 1,000 mm/s top speed earns its premium. The Max4 also brings 40% more build volume and extra engineering materials (PPS-CF).
How we judge timing and deals: read our methodology →
The H2S offers more than twice the print volume of the X2D. At 1000 mm/s it is also among Bambu's fastest printers, 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.
The Max4 offers the largest build volume in Qidi's lineup — enabling large functional parts, architectural models, and production batch runs that exceed Plus5 capacity.
The Max4's closed-loop XY adds positional feedback for improved accuracy at high speeds — a differentiating feature at this price tier that reduces dimensional errors on large prints.
Qidi's proven active chamber heating technology scaled to a 390×390 mm bed — critical for consistent ABS, ASA, PA-CF, and PPS-CF results across the full build plate.