The Scubapro MK25 EVO A700 is their flagship regulator that is capable of incredible flow rates, response times by using a high performance balanced piston first stage and balanced second stage with full metal housing and valve.
The MK25 EVO is a cold water approved, balanced piston first stage that delivers unbelievable amounts of gas without even batting an eye lid... if it had them of course. The first stage has two high pressure ports mounted on the main cylindrical body and five high-flow low pressure ports on a swivelling turret. The MK25 EVO isn't environmentally sealed but it is heavily protected against the cold with special coatings over the piston, spring and a number of other components to improve cold water reliability and performance.
The A700 matches the high performance of the first stage with a full metal balanced valve with diver adjustable inhalation controls. The A700 features a metal housing and front cover to improve thermal exchanging between the regulator and the surrounding water, helping to reduce the risks of components freezing under heavy use in extreme conditions. As well as the valve sensitivity adjustment the diver also has control on the venturi effect within the housing with the option of Pre-Dive and Dive modes to either help prevent freeflows during entry or optimal gas flow to the mouthpiece.