Atomic Aquatics
Atomic Aquatics B2
—
Best Dive Regulators · head-to-head
Atomic Aquatics B2 vs Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono")
A sourced, side-by-side comparison. Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") is cheaper at $629.95. Every spec and price links to its source.
Which is better: the Atomic Aquatics B2 or Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono")?
The Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") wins 1 of the 1 specs we compare head to head; the other wins 0.
See Atomic Aquatics B2 on Amazon See Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") on Amazon
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Atomic Aquatics B2 |  Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") |
|---|---|---|
| US price | — | $629.95 |
| Brand | Atomic Aquatics | Cressi |
| Released | — | — |
| First stage type | piston | piston |
| Balanced | Yes | Yes |
| Din or yoke | DIN and yoke | DIN (300 bar) and INT/yoke (230 bar) versions |
| Hp lp ports | 2 HP / 5 LP (on swivel cap) | 2 HP / 5 LP (4 on rotating turret + 1 co-axial hi-flow) |
| Cold water rated | — | Yes |
| Environmentally sealed | Yes | No |
| Adjustable venturi controls | AFC (Automatic Flow Control) with manual detune knob | external IP adjustment (Allen key) + venturi knob + adjustable inhalation effort |
| Weight (g) | 1134 | 1123 |
Sources — Atomic Aquatics B2: atomicaquatics.com (verified 2026-08-11). Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono"): cressiamerica.com (verified 2026-08-11).
What's the difference between the Atomic Aquatics B2 and Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono")?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Din or yoke: Atomic Aquatics B2 DIN and yoke vs Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") DIN (300 bar) and INT/yoke (230 bar) versions
- Hp lp ports: Atomic Aquatics B2 2 HP / 5 LP (on swivel cap) vs Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") 2 HP / 5 LP (4 on rotating turret + 1 co-axial hi-flow)
- Environmentally sealed: Atomic Aquatics B2 true vs Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") false
- Adjustable venturi controls: Atomic Aquatics B2 AFC (Automatic Flow Control) with manual detune knob vs Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") external IP adjustment (Allen key) + venturi knob + adjustable inhalation effort
- Weight (g): Atomic Aquatics B2 1134 vs Cressi AC25M Master Cromo (corrected from misspelled seed "Master Crono") 1123