Pairing the balanced adjustable Ellipse 2nd stage regulator, with the hyper-balanced diaphragm 1st stage MC9 regulator, place this regulator at the very top of the Cressi range. The engineering and performance of this combination creates a high performance regulator that will compete with the best of them. The Ellipse Balanced 2nd stage has incorporated many of the characteristics of Ellipse. The Ellipse Balanced has a slightly larger housing which is made from a sound-absorbing material, and a new diaphragm that further improves the already very low inhalation effort of Ellipse. The pneumatic balanced piston allows for constant performance at any depth and with any cylinder pressure in the Scuba tank. Inhalation Effort can be adjusted with an easy grip knob. The knob is designed to work even when wearing gloves and allows the diver to fine tune the breathing resistance to meet the needs of the dive environment.To further give the diver a custom breathing mechanism the regulator is equipped with a venturi switch, when placed in position (-) it functions as pre-dive mode, and helps prevent the regulator from free-flowing at the surface, when moved to (+) it allows the regulator its maximum performance.The design of the 2nd stage is environmentally sealed allowing the regulator to function properly between annual services at a constant high performance. An internal heat exchanger optimizes the performance of the regulator even in cold waters. Through a