Mares
Mares Fusion 52X
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Best Dive Regulators · head-to-head
Mares Fusion 52X vs Cressi AC25M Master Cromo
A sourced, side-by-side comparison. Cressi AC25M Master Cromo is cheaper at $629.95. Every spec and price links to its source.
Cressi
Cressi AC25M Master Cromo
$629.95
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Mares Fusion 52X |  Cressi AC25M Master Cromo |
|---|---|---|
| US price | — | $629.95 |
| Brand | Mares | Cressi |
| Released | — | — |
| First stage type | diaphragm | piston |
| Balanced | Yes | Yes |
| Din or yoke | DIN and INT (yoke), convertible | DIN (300 bar) and INT/yoke (230 bar) versions |
| Hp lp ports | — | 2 HP / 5 LP (4 on rotating turret + 1 co-axial hi-flow) |
| Cold water rated | Yes | Yes |
| Environmentally sealed | Yes | No |
| Adjustable venturi controls | Twin Power flow-control switch | external IP adjustment (Allen key) + venturi knob + adjustable inhalation effort |
| Weight (g) | — | 1123 |
Sources — Mares Fusion 52X: mares.com (verified 2026-08-11). Cressi AC25M Master Cromo: cressiamerica.com (verified 2026-10-08).
What's the difference between the Mares Fusion 52X and Cressi AC25M Master Cromo?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- First stage type: Mares Fusion 52X diaphragm vs Cressi AC25M Master Cromo piston
- Din or yoke: Mares Fusion 52X DIN and INT (yoke), convertible vs Cressi AC25M Master Cromo DIN (300 bar) and INT/yoke (230 bar) versions
- Environmentally sealed: Mares Fusion 52X true vs Cressi AC25M Master Cromo false
- Adjustable venturi controls: Mares Fusion 52X Twin Power flow-control switch vs Cressi AC25M Master Cromo external IP adjustment (Allen key) + venturi knob + adjustable inhalation effort