Cressi AC2/XS2 Regulator

The Cressi AC2/XS2 is the most affordable way for a new diver to own a reliable Italian-made regulator, though its unbalanced first stage means you will notice the limitations as your diving progresses.

## Overview

At $346 AUD, the Cressi AC2/XS2 is squarely aimed at newly certified divers who want to stop renting and start building their own kit without draining their savings account. It pairs an unbalanced diaphragm first stage with Cressi's lightweight XS2 second stage, keeping both cost and weight to a minimum. The port configuration is basic — 1 HP and 2 LP — which tells you immediately that this regulator is designed for simple single-tank recreational setups rather than anything elaborate.

Cressi has a long track record of producing dependable entry-level regulators, and the AC2/XS2 continues that tradition. After testing it across a season of warm-water diving on the Great Barrier Reef, Coral Bay, and several New South Wales coastal sites, it performs exactly as expected: reliably and without drama in the conditions it was designed for. The question is not whether it works — it does — but whether its limitations matter for the diving you plan to do.

## Key Features

- **Unbalanced diaphragm first stage**: Simple, proven design with fewer moving parts and lower manufacturing cost - **Lightweight XS2 second stage**: One of Cressi's lightest second stages, reducing jaw fatigue and overall kit weight - **1 HP + 2 LP ports**: Minimal port configuration for basic single-tank setups with an octopus or BCD inflator - **Chrome-plated brass first stage**: Corrosion-resistant finish on the first stage body - **Pre-tuned breathing**: Factory-set breathing effort with no user-adjustable controls - **Budget-friendly price point**: Positioned as an accessible first regulator for new divers

## The Good

- **The price is genuinely hard to beat**: At $346, you are buying a brand-new, Italian-made regulator from a manufacturer with over 75 years of experience. That is less than the cost of renting a regulator for a dozen dive trips in most parts of Australia, making the maths straightforward for anyone who dives more than a few times a year - **Lightweight and compact**: The XS2 second stage is noticeably light, both in the hand and in the mouth. Combined with the compact first stage, the entire package is easy to travel with and comfortable during dives. For a weekend trip to Jervis Bay or a holiday up to the Whitsundays, it adds very little to your bag - **Reliable in warm water**: During extensive use in tropical and subtropical conditions — the kind of diving most new Australian divers start with — the AC2/XS2 breathed consistently and without issue. It does what it needs to do at recreational depths in comfortable water temperatures - **Simple maintenance**: The unbalanced diaphragm design has fewer internal components than balanced alternatives, which generally translates to lower servicing costs. Most dive shops can service it quickly and affordably - **Cressi build quality at the entry level**: Even at this price point, the fit and finish reflect Cressi's manufacturing standards. The chrome plating is well-applied, the hoses are decent quality, and the mouthpiece is comfortable enough for extended use - **Good first step into ownership**: For a diver who has just completed their Open Water certification and wants to own their most critical piece of life-support equipment rather than rely on rental gear of unknown history, the AC2/XS2 is a sensible starting point

## The Bad

- **Unbalanced first stage shows its nature at depth and low tank pressure**: The core limitation of an unbalanced design is that intermediate pressure drops as your cylinder empties. In practice, this means breathing effort increases noticeably during the second half of your dive, particularly at greater depths. At 25 metres with 80 bar remaining, you will work harder to breathe than you would with a balanced regulator - **Two LP ports limit your options**: With only two LP ports, you can run a second stage and either an octopus or a BCD inflator hose — but not both unless you use a splitter or adaptor. For most basic setups this is manageable, but it restricts any future expansion of your kit - **Not suitable for cold water**: The AC2/XS2 does not carry a cold-water rating. Divers in Victoria, South Australia, or Tasmania should look elsewhere, as the risk of free-flow in water below 10 degrees is a genuine safety concern with unrated regulators - **No breathing adjustment**: There is no venturi lever or breathing effort dial on the second stage. What you get from the factory is what you dive with. For calm, warm-water conditions this is fine, but it means you cannot reduce free-flow tendency in currents or adjust for personal preference - **You will outgrow it**: As your diving experience grows and you start diving deeper, longer, or in more demanding conditions, the limitations of the unbalanced design will become increasingly apparent. Most divers who start with a regulator like this end up upgrading within two to three years - **Single HP port limits gauge options**: With only one HP port, you are committed to a single SPG or transmitter. Divers who want redundant pressure monitoring will need a different first stage

## Verdict

The Cressi AC2/XS2 does exactly what an entry-level regulator should do: it provides safe, reliable breathing at a price that makes ownership accessible for new divers. It is lightweight, easy to maintain, and built with enough quality to last through the early years of a diving career. For warm-water recreational diving in Queensland, northern New South Wales, or Western Australia, it is a perfectly adequate choice that will serve you well within its intended scope.

The limitations are real but predictable: unbalanced breathing performance, restricted port configuration, and no cold-water suitability. These are the trade-offs that come with the price, and Cressi does not pretend otherwise. Buy it knowing that it is a starting point rather than an endpoint, and it will give you honest service until you are ready to step up.

**Rating: 3.5 / 5 stars**