Mares
Mares Fusion 52X
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Best Dive Regulators · head-to-head
Mares Fusion 52X vs Hollis 200LX + DCX (current flagship, corrected from the discontinued seed "500SE")
A sourced, side-by-side comparison. Hollis 200LX + DCX (current flagship, corrected from the discontinued seed "500SE") is cheaper at $749.95. Every spec and price links to its source.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Mares Fusion 52X |  Hollis 200LX + DCX (current flagship, corrected from the discontinued seed "500SE") |
|---|---|---|
| US price | — | $749.95 |
| Brand | Mares | Hollis |
| Released | — | — |
| First stage type | diaphragm | diaphragm |
| Balanced | Yes | Yes |
| Din or yoke | DIN and INT (yoke), convertible | DIN and yoke |
| Hp lp ports | — | 2 HP / 5 LP |
| Cold water rated | Yes | Yes |
| Environmentally sealed | Yes | Yes |
| Adjustable venturi controls | Twin Power flow-control switch | diver-adjustable inhalation knob + adjustable dive/pre-dive venturi switch |
| Weight (g) | — | — |
Sources — Mares Fusion 52X: mares.com (verified 2026-08-11). Hollis 200LX + DCX (current flagship, corrected from the discontinued seed "500SE"): hollis.com (verified 2026-08-11).
What's the difference between the Mares Fusion 52X and Hollis 200LX + DCX (current flagship, corrected from the discontinued seed "500SE")?
Where the two actually differ on the specs we track (2 of 8). Matching specs are omitted.
- Din or yoke: Mares Fusion 52X DIN and INT (yoke), convertible vs Hollis 200LX + DCX (current flagship, corrected from the discontinued seed "500SE") DIN and yoke
- Adjustable venturi controls: Mares Fusion 52X Twin Power flow-control switch vs Hollis 200LX + DCX (current flagship, corrected from the discontinued seed "500SE") diver-adjustable inhalation knob + adjustable dive/pre-dive venturi switch