500se

Hollis 500SE second stage and DC7 first stage. Brand new, never been in the water. The first stage was converted to DIN by Sierra Diving Center with manufacturer parts (which is why the box tags below say yoke). From Hollis: "Old School. New Tech. The 500SE utilizes a servo controlled valve to...

Looking to buy a used hollis DC7 500CE. Decided to start building out a travel setup, and am interested in the side exhaust for photography

Hi All, I am a (relatively) experienced back mount diver, about to splash in to the world of Sidemount. I am looking for opinions to point me in the right direction on setup. The only thing holding me back so far was the thought of having to replace all of my beloved gear! I have already...