An environmentally sealed, extremely high performance regulator. A regulator's first stage works by taking the air pressure from your tank and reducing it to a lower, consistent pressure. Your first stage will supply this constant pressure whether your tank is full, almost empty, or in between.
As you enter the water and begin your descent, the surrounding water pressure increases. Your first stage must "sense" this increasing pressure and adjust accordingly.
Most first stages allow water inside to "push" on a piston or diaphragm exposing the interior to the harsh elements. This can cause reduced reliability and more frequent maintenance.
GENESIS Scuba's NEW D.A.D. First Stage maintains a "seal" of air. No water, salt, silt or sand enters your first stage. Only the correct amount of air is added during descent to maintain equal pressure. During ascent, the air in your first stage expands and the excess is vented.
The NEW D.A.D. First Stage is sealed from the environment, providing greater reliability, less maintenance and higher performance.