Hollis

Hollis 100LX + DC3 (Yoke)

Hollis's value-tier combo, pairing the sealed DC3 diaphragm first stage with the simpler 100LX second stage.

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.

Hollis 100LX + DC3 (Yoke)
3.7Comparison Score
$399.95
Buy on Amazon
Released2016
First stagediaphragm
BalancedYes
Environmentally sealedYes
Cold-water ratedYes
Connectionyoke
Max pressure232 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
  • Environmentally sealed, over-balanced DC3 diaphragm first stage at a genuinely accessible price point
  • Meets the EN250:2000 coldwater standard on the same first stage Hollis uses in its pricier combos
  • Reversible demand valve lets you swap right/left hose routing, and MiFlex hose plus orthodontic mouthpiece come standard
Cons
  • 100LX second stage lacks the diver-adjustable airflow and venturi controls of Hollis's 212 second stage
  • Hollis doesn't publish a combined weight figure for this pairing, harder to compare on travel weight
  • Also sold in DIN, confirm the listing matches this yoke spec
Diver community sentiment
Mixed opinions

Divers' opinions on the 100LX/DC3 split along different axes than pure breathing performance. ScubaLab's published test rated it very good for ease of breathing and purge feel, and forum posters generally don't dispute the in-water performance. However, actual Scubaboard threads skew more critical: one diver reported a defective purge button on both the primary and octopus causing free-flow from water movement, unresolved by shop adjustment; another thread saw an instructor dismiss Hollis regs broadly as costing "about twice as much" as comparable Taiwanese-made regs, citing a weaker parts/service network versus brands like Apeks.

Scubaboard: 100LX purge button problemScubaboard: XTX200 vs Hollis 100LXHollis: ScubaLab 2016 Best Buy test

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

The 100LX/DC3 is Hollis’s entry point into its “LX” line, built to give divers the same sealed DC3 first stage used across the brand’s higher combos while keeping cost down with a simpler second stage. It’s a common recommendation for new divers who want a sealed reg without paying for a fully adjustable second stage they may not need yet.