The Inspire is a high performance regulator. It provides superior breathing and breathes dry in all positions. It breathes quietly and smoothly. It proves that you do not have to pay top dollar to get performance and features. The Inspire first stage regulator is a balanced diaphragm design means that the first stage delivers a consistent pressure regardless of cylinder pressure or depth. The result is consistent, easy breathing. The diaphragm membrane transmits the pressure changes to the internal mechanism eliminating the need for the surrounding water to enter the intricate mechanism.