Aqualung

Aqualung Core Supreme (DIN)

A mid-tier balanced diaphragm reg with a full environmental seal and cold-water rating, once Aqualung's mainstream mid-range option.

Environmentally sealed, cold-water rated

Sealed first stage keeps water and ice crystals out of the internal mechanism, the standard for diving below 50°F/10°C.

Aqualung Core Supreme (DIN)
4.1Comparison Score
$529
Buy on Amazon
Released2015
First stagediaphragm
BalancedYes
Environmentally sealedYes
Cold-water ratedYes
ConnectionDIN
Max pressure300 bar
HP / LP ports2 / 4
Adjustable 2nd stageYes
Weight—
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
  • Full environmental dry seal and sub-10°C cold-water rating on the Supreme variant, a genuine step up from the base Core's splash-guard-only ACD
  • Shares Aqualung's balanced-diaphragm engineering with the pricier LEG3ND line at roughly half the cost
  • Field-serviceable with parts shared across other Aqualung models, which helps long-term maintenance costs
Cons
  • No longer listed on Aqualung's official US site, current stock comes through authorized dealers rather than a direct current-catalog listing
  • Weight specs conflict sharply between dealer listings (as much as 190g difference for the DIN first stage alone), so we're leaving weight off this entry
  • Whether an octopus is included in the base set isn't confirmed either way
Diver community sentiment
Mostly positive

Divers on Scubaboard generally describe the Core Supreme's breathing performance as smooth and comparable to Aqualung's higher-end Legend, with several users stating the two "breathe about the same" despite the Core Supreme costing roughly $200 less. Praise centers on light weight, a compact first stage favored by technical divers for necklace/backup configurations, and strong value with an Auto-Closure Device. Cold-water sentiment is mixed: some UK divers report no free-flow issues in cold water, while others in colder regions still prefer the heavier Legend. No recurring reliability or servicing complaints surfaced.

Scubaboard: Core Supreme breathing/cold-water discussionScubaboard: Core Supreme vs Legend comparison

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

Core Supreme was Aqualung’s mainstream mid-tier reg, sitting between the entry-level Titan and the flagship LEG3ND line, adding a full environmental seal and cold-water rating that the base (non-Supreme) Core lacks. It appears to have been superseded by Aqualung’s newer Helix/Helix Pro line on the company’s current US site, though Core Supreme units are still widely available new through dive shops and online retailers.