Draft entry. Specs not yet verified against the manufacturer.

Mares

Mares Prestige 15X (DIN)

A balanced, environmentally sealed diaphragm regulator sitting in Mares's mid-to-upper recreational tier, below the Abyss flagship.

Environmentally sealed

Sealed first stage chamber, protects against ice formation and contaminants in cold or silty water.

Mares Prestige 15X (DIN)
3.3Comparison Score
$359.95
Buy on Amazon
Released2015
First stagediaphragm
BalancedYes
Environmentally sealedYes
Cold-water ratedNo
ConnectionDIN
Max pressure300 bar
HP / LP ports2 / 4
Adjustable 2nd stageNo
Weight936g
Nitrox-ready (EAN40)Yes
Octo includedNo

"HP / LP ports" is the number of high-pressure and low-pressure ports on the first stage, which caps how many accessories (transmitter, SPG, inflator, second second-stage) you can run at once.

Pros
  • Fully balanced, environmentally sealed diaphragm first stage at a price well below the Abyss line
  • Lightweight technopolymer second stage reduces jaw fatigue on long dives
  • Nitrox compatible up to 40 percent out of the box
Cons
  • No documented cold-water certification or CWD kit, unlike the Abyss 22 Navy II
  • Whether the second stage has adjustable breathing resistance isn't clearly published, treat as unconfirmed
  • Release year isn't documented, so it's unclear how current this model is in Mares's current lineup
Diver community sentiment
Mostly positive

Divers on Scubaboard and dive-industry reviewers generally describe the Prestige 15X as a solid, affordable regulator that breathes smoothly and reliably at recreational depths, with good value and a lightweight, travel-friendly design; one long-term poster reported two years of trouble-free use in 50°F California saltwater. Recurring criticisms include noticeably wetter/harder breathing when inverted or head-down and the lack of a fully balanced second stage. There are isolated but credible reports of first-stage failures, including a loud freeflow diagnosed by a technician as likely due to improper diaphragm-clamp torque during assembly, pointing to a servicing issue rather than a design flaw.

Scubaboard: Prestige 15X freeflow failureScubaboard: Prestige 15X vs Hog D3/Zenith

Summarized from public forum discussion (Scubaboard, Reddit, and similar), not a survey we ran ourselves. See the linked threads for the original conversations.

The Prestige 15X sits in Mares’s mid-to-upper recreational tier, a fully balanced, environmentally sealed diaphragm first stage paired with a lightweight second stage at a price well under the Abyss line. It suits recreational divers who want sealed, contaminant-resistant reliability without flagship pricing, though divers who need documented cold-water certification should look to the Abyss 22 line instead.