SCUBAPRO's best-selling air balanced second stage and its top performing air balanced piston first stage is a match made in diver heaven.  Well-known for its low work of breathing, year after year this combo has consistently ranked as one of the top-performing reg systems on the market. 

The MK25 EVO first stage lets you enjoy an ultra-fast breathing response, instant delivery of air on demand, great sensitivity and impressive airflow. 

The S600 delivers smooth and easy inhalation and exhalation while offering efficient user controls, including a powerful purge, an inhalation effort contol knob and Venturi Initiated Vacuum Assist [VIVA]. Together they provide a steady flow of air, regardless of depth, water temperature, or workload.

FEATURES

When you team SCUBAPRO's flagship first stage with a second stage engineered to excel in harsh conditions, you get a system that any recreational or technical diver can take on any dive, anywhere in the world, and be assured of rock-solid performance and reliability.  The MK25 EVO/G260 is just such a system. 

The MK25 EVO delivers an ultra-fast breathing response, great sensitivity and extra-high airflow, making it the ultimate do-ot-all first stage for all water temperatures.

The G260 is tthe most imitated air balanced second stage of all time.  It features metal internal components and a left-right hose attachment option, making it a great choice for tech diving configurations and a consistent top-of-the-line performer.

FEATURES

• Air balanced flow-through piston in a chrome-plated brass body provides constant and effortless airflow unaffected by depth, tank pressure, or breathing rate.
• Patented XTIS [Extended Thermal Insulated System] thermally insulates the inner mechanism from the environment, improving cold-water conditions without compromising breathing performance.
• Anti-freeze protection radically increases breathing reliability when diving in the most extreme water temperatures.
• Two opposing high pressure ports allow the first stage to be positioned either up or down.
• Four high-flow and one axial super high-flow low pressure ports on a swivel turret maximize hose routing options.
• External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily.
• Air balanced second stage valve smoothes out the inhalation effort at varying depths and supply pressures.
• Second stage's rugged reinforced technopolymer case and front cover with stainless steel frame looks good plus is extremely durable.
• Metal valve housing [barrel] is able to withstand years of aggressive diving.
• A diver-adjustable inhalation efffort knob fine-tunes air delivery to suit changing depths, water conditions and personal tastes, and a Venturi-Initiated-Vacuum-Assist [VIVA] dive/pre-dive switch prevents free flows in cold water or when used as an octopus.
• Super-flow hose features an oversized bore that allows more air to flow on each inhalation.
• Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn't inhibit airflow.