MC11 SC + Master 1St + 2nd Stage DIN

The Cressi MC11 SC + Master regulator combines two breathing powerhouses.

The hyper-balanced diaphragm MC11 SC DIN 1st stage is environmentally sealed, keeping the chamber dry and eliminating the risk of freezing and contamination.

Cressi's PressureSync technology maintains consistent intermediate pressure throughout each breathing cycle. Regardless of depth, cylinder pressure, or breathing rate, you’ll get one of the smoothest and easiest breathing experiences available.

A high-capacity conical filter with a large surface area traps more impurities from the cylinder than a standard filter, ensuring cleaner air and reduced maintenance.

The Master 2nd stage is the perfect cold-water partner. An internal heat exchanger prevents ice formation within the regulator, while the elliptical diaphragm design increases surface area, reducing inhalation effort, particularly during high-demand dives or at depth.

The Master housing is made from a medical-grade plastic that inhibits bacterial growth inside the regulator caused by saliva and moisture. The material is also highly resistant to saltwater degradation, so the surfaces remain smooth and easy to clean.

A stainless-steel insert on the front cover, with carefully positioned ports, neutralises dynamic water pressure to eliminate current-induced free flows.

The adjustable Venturi can be set to maximise airflow in dive mode, prevent free flows at the surface in pre-dive mode, or positioned anywhere between the two, depending on diver preference.

• Cold Water Certified EN 250 A < 10°C
• The Hyperbalanced Diaphragm INT 1st stage increases airflow as cylinder pressure drops, for a consistent breathing experience at all depths
• Environmentally sealed for cold/warm water diving - the 1st stage chamber stays dry, protecting the internal parts from freezing or contamination
• 2 7/16” HP ports UNF 4 3/8” MP ports UNF The ports are arranged in a T-shape to optimise hose routing while keeping the first stage compact
• Cressi’s PressureSync technology maintains Intermediate Pressure during the breathing cycle for a consistent breathing experience
• Advanced pneumatically balanced 2nd stage reduces breathing effort at any depth, for an exceptionally smooth breathe during demanding dives
• Adjustable Venturi maximises airflow in dive mode, prevents free-flows at the surface in pre-dive mode, and can be set to any position between the two
• Patented elliptical diaphragm increases diaphragm surface area for a smoother and more responsive breathe
• An internal heat exchanger prevents the 2nd stage and Octo from freezing for reliable performance in extreme diving conditions