Second Stage Scuba Regulators

Cressi Octopue XS2

88 reviews

SKU: CSBOXS

~~$189.95~~ Save: $60 (32%)

^$129.95

+ wishlist

In Stock

DESCRIPTION

A reliable and high-performance Cressi XS Octopus with a lightweight design and dependable valve.

Pros

Great performance and breathability
Good value for the price
Easy to use and adjust
Budget-friendly
Reliable and durable

Cressi AC2/XS2 Regulator

57 reviews

SKU: CSBRXS2

~~$289.95~~ Save: $70 (24%)

^$219.95

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In Stock

DESCRIPTION

A dependable piston regulator with a marine-grade brass 1st stage and durable hi-tech polymer 2nd stage.

Pros

Lightweight and comfortable
Reliable and dependable
Affordable and good value for money
Easy and effortless breathing
Versatile and works in both cold and warm water

Mares Prestige 15X and Prestige Octopus Package

32 reviews

SKU: MRSPKPRGY

~~$619.90~~ Save: $170.90 (28%)

^$449

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In Stock

DESCRIPTION

A lightweight Mares regulator package with diaphragm first-stage, 4 LP ports, and 2 HP ports.

Aqualung Calypso/Titan Octopus

28 reviews

SKU: UDRCTO

^$239

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In Stock

DESCRIPTION

A reliable and easy-to-use octopus with a silicone mouthpiece and polycarbonate housing.

Pros

Great breathability
Reliable and easy to use
Prompt delivery and well-packed
Inexpensive and good value
Works well in cold water

XS Scuba Second Stage Quick Disconnect

16 reviews

SKU: XSSSSQD

^$87.95

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In Stock

DESCRIPTION

A chrome brass quick disconnect for attaching multiple 2nd stages to a single hose.

Scuba Regulator & Octo Grab Bag

15 reviews

SKU: SCBR1O

~~$514.90~~ Save: $134.95 (26%)

^$379.95

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In Stock

DESCRIPTION

A reliable and balanced scuba regulator and octo grab bag for underwater diving.

Oceanic Alpha 8 SP5 Piston Regulator, Black

13 reviews

SKU: OCNA8SP5BK

^$334.95

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In Stock

DESCRIPTION

A durable black piston regulator with easy breathing, Nitrox compatibility, and exceeding safety standards.

Sherwood Brut Pro Regulator

13 reviews

SKU: SWDBRP

^$374.95

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In Stock

DESCRIPTION

A reliable Sherwood Brut Pro regulator with optimal inhalation and exhalation, nitrox compatible up to 40%.

Aqualung Calypso Regulator

12 reviews

SKU: UDRCLR

^$389

+ wishlist

In Stock

DESCRIPTION

A lightweight and reliable Aqualung Calypso Regulator with adjustable 2nd stage and Nitrox compatibility.

Zeagle F8 Yoke Regulator

12 reviews

SKU: ZGLF8

^$749.95

+ wishlist

In Stock

DESCRIPTION

A high-performance yoke regulator with a low-profile design, environmentally sealed first stage, and adjustable second stage.

Scubapro MK25 EVO/S620Ti Dive Regulator System

9 reviews

SKU: SCPM25ES620

^$1249

+ wishlist

In Stock

DESCRIPTION

A high-performance regulator set with a balanced piston first stage and adjustable inhalation control.

Cressi Octopus Compact

9 reviews

SKU: CSBOC

^$159.95

+ wishlist

In Stock

DESCRIPTION

A reliable and comfortable Cressi octopus with a low profile design and non-corrosive materials.

Scuba Regulator Grab Bag

8 reviews

SKU: SCBR1

~~$364~~ Save: $99.05 (27%)

^$264.95

+ wishlist

In Stock

DESCRIPTION

A piston first-stage regulator with a pneumatically balanced 2nd stage design and nitrox compatibility.

Atomic Aquatics B2 Regulator Yoke

8 reviews

SKU: ATMB2S

^$969.95

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In Stock

DESCRIPTION

A lightweight, all-titanium regulator with adjustable 2nd stage and patented comfort swivel for easy breathing.

Atomic Aquatics ST1 Swivel Sealed Regulator

7 reviews

SKU: ATMST1SS

^$1649.95

+ wishlist

In Stock

DESCRIPTION

A corrosion-resistant stainless steel regulator with smooth breathing and tangle-free movement.

Cressi MC9-SC Compact Pro Yoke Regulator

7 reviews

SKU: CSBRCPS

^$499.95

+ wishlist

In Stock

DESCRIPTION

A lightweight, environmentally sealed regulator with enhanced performance and reduced effort for easy travel.

Dive Rite XT2 Second Stage Regulator (No Hose)

7 reviews

SKU: DIVRG5200R

^$199

+ wishlist

In Stock

DESCRIPTION

A pneumatically balanced second stage with a carbon fiber cover and ABS plastic case.

Atomic Aquatics B2 Sealed Regulator Yoke

7 reviews

SKU: ATMB2SS

^$1019.95

+ wishlist

In Stock

DESCRIPTION

A lightweight, ergonomic regulator with a titanium second stage and patented comfort swivel.

Scubapro MK25 EVO/A700 Dive Regulator System

6 reviews

SKU: SCPM25EA70

^$1299

+ wishlist

In Stock

DESCRIPTION

A high-performance regulator set with customizable breathing options and enhanced cold-water diving capabilities.

Atomic Aquatics M1 Regulator Yoke Sealed

6 reviews

SKU: ATMM1BK

^$1019.95

+ wishlist

In Stock

DESCRIPTION

A high-performance regulator designed for extreme diving situations, with nitrox-ready capabilities and freeze protection.

Dive Rite XT Regulator

6 reviews

SKU: DIVRG5300Y

^$575

+ wishlist

In Stock

DESCRIPTION

A patented, environmentally sealed regulator with optimal hose routing and Teflon-coated parts.

Atomic Aquatics M1 Regulator DIN Sealed

5 reviews

SKU: ATMM1BKD

^$1019.95

+ wishlist

In Stock

DESCRIPTION

A highly durable and corrosion-resistant Atomic M1 Regulator with DIN system, suitable for cold water and extreme diving.

Dive Rite XT1/XT2 Advanced Open Water Regulator Package

5 reviews

SKU: DIVPK53D

^$975

+ wishlist

In Stock

DESCRIPTION

A streamlined, environmentally sealed regulator with adjustable 2nd stage and cold-water ready components.

Scubapro A700 Regulator, Second Stage Only

5 reviews

SKU: SCPA700

^$820

+ wishlist

In Stock

DESCRIPTION

A durable, high-performance second stage regulator with adjustable features for optimal breathing sensitivity.

Sherwood Oasis Pro Regulator

4 reviews

SKU: SWDRO

~~$494.95~~ Save: $260.95 (53%)

^$234

+ wishlist

In Stock

DESCRIPTION

A Sherwood Oasis Pro Regulator with moisture retention vanes, easy-breathing design, and environmentally sealed first stage.

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Second Stage Scuba Regulators

As the heart of your breathing system underwater, the second stage scuba regulator is an essential piece of gear for any diver, whether you’re gearing up for your first open water adventure or have logged hundreds of dives exploring the world’s oceans. The second stage is the component that delivers air directly to your mouth, transforming the high-pressure air from your tank into a smooth, easy breath at ambient water pressure. This process is made possible by a sophisticated mechanism: as you inhale, a diaphragm inside the regulator moves inward, activating a lever that opens a valve to allow air to flow. The result is a consistent and comfortable supply of air, even as you descend to greater depths or encounter changing conditions. When considering a 2nd stage regulator scuba divers should think about factors such as breathing resistance, ease of maintenance, mouthpiece comfort, and environmental sealing. The right second stage scuba regulator can make the difference between a relaxing, effortless dive and one where you’re constantly aware of your gear. Many divers appreciate features like adjustable venturi switches, which help prevent free-flow on the surface, and user-adjustable inhalation controls to fine-tune breathing effort at depth. Whether you’re a recreational diver enjoying warm, clear waters or a technical diver braving colder, more challenging environments, the right 2nd stage scuba regulator will be tailored to your specific needs and diving style.

Spring and early summer are especially popular times for new divers to begin their journey or for seasoned divers to refresh their kit in anticipation of upcoming trips. As the water warms and dive sites come alive with marine life, many divers take the opportunity to upgrade or replace their second stage regulators. These components also make thoughtful and practical gifts for dive buddies, instructors, or family members who are passionate about the underwater world. A new second stage can be a welcome addition to any diver’s gear bag, especially for those who travel frequently and appreciate having a backup or dedicated regulator for specific environments. When browsing for a second stage, it’s helpful to read a variety of scuba.com regulators review evaluation articles or check out a scuba.com scuba regulators evaluation or test or comparison to get a sense of how different models perform in real-world conditions. Some divers prefer lightweight, compact models for travel, while others prioritize ruggedness and ease of servicing for remote or extended expeditions. Features like oversized purge buttons, ergonomic mouthpieces, and smooth air delivery are often highlighted in user reviews, and these personal insights can be invaluable when making your selection.

For divers who are assembling a complete regulator setup, it’s important to ensure compatibility between the first and second stages, as well as to consider the type of diving you’ll be doing most often. Technical divers, for example, may require a 2nd stage regulator scuba setup that is optimized for use with different gas mixes or for redundancy in demanding environments. Recreational divers, on the other hand, might prioritize comfort, ease of breathing, and simple maintenance. If you’re interested in exploring the differences between standard and high-performance options, you can learn more by visiting our High Pressure Scuba Regulators page, which provides additional context on how these components work together as part of a complete system. Ultimately, the best second stage scuba regulator is one that feels intuitive, reliable, and comfortable for you—one that inspires confidence every time you descend beneath the surface. Whether you’re diving local lakes, tropical reefs, or embarking on a liveaboard adventure, investing in a quality second stage is a decision that pays dividends in safety, enjoyment, and peace of mind.