The Abyss by Mares is available with the compact top performer MR52 first stage: the best for a unique high calibre set up. Double DFC system provides a consistent flow of air at any depth, even when breathing simultaneously from both the primary second stage and the octopus. The NCC system and the design of the Abyss second stage with more metal on the front cover, allows this combination to achieve very high performance in cold water. Pre-oriented pressure ports for an ideal placement of hoses even using two independent regulators.