The Cressi AC2 + XS Compact set is one of the most popular entry regulators in Argentina, combining extreme lightness, reliability and accessible pricing. The AC2 first stage is an unbalanced piston design — simple, serviceable and cheap to maintain annually. The XS Compact second stage measures just 6 cm in diameter and weighs 145 g, delivering an air flow rate of 2,100 l/min with an intermediate pressure drop of 0.5–0.8 bar at 150 bar cylinder pressure.
The integral purge button is significantly larger than competitors’ (80–400% larger according to Cressi specifications), making purging easy even for inexperienced divers. The second stage includes venturi adjustment for breathing effort, though in a basic form compared to higher-end models. The set ships with one high-pressure port and four low-pressure ports. DIN and INT versions are available; verify which your cylinder uses before purchasing.
Its limitations are those of any entry regulator: no environmental seal on the first stage (breathing effort increases as cylinder pressure drops), not rated for cold-water diving, and not suited for technical diving. For tropical diving and recreational depth to 40 m it is a reliable and low-maintenance piece of kit. A comparable alternative in the same price bracket is the Mares Rover 15X. Reference price in May 2026 on MercadoLibre AR: ~$683,000 (sale) to $975,890 (list price).
Sources: