Diaphragm first-stage with four mp and two hp ports. Ejector design second-stage with side exhaust.
The very compact first-stage has a tremendous track record but needs an extension piece if you want to use a modern computer transmitter. DIN fitting with A-clamp converter supplied. Not a regulator that should be stripped down in the field because the proper interstage pressure is crucial to its function. The second-stage can be used from left or right shoulder or either way up but George said it was important to use it in the horizontal position or you might suck water.
At depth:
George: "I am a Poseidon man but I was disappointed. Its performance seemed very average. It was comfortable but I found the exhaust bubbles visually disturbing."
Sarah: "I was unpleasantly surprised. I always thought this regulator had the reputation for being the mutt's nuts. The breathing was not particularly smooth and the bubbles were noticeable. The purge nearly blasted my brains out!"
Steffi: "It was difficult to clear of water and there was a much greater initial inhalation resistance than many of the others. Initially it seemed very wet. It certainly did not feel comfortable."
Steve: "I did not feel happy with it."
Upside-down: Can be used either way up.
In a fast current: Excellent.
What the machine found:
This regulator failed to perform within the parameters set beyond 48m.
Work of breathing at 48m: 2.43 joules/litre.
Guide price: £305
