The interesting thing is that Mares regulators are in many ways the old Voit-Swimaster designs, like their diaphragm first stages and their second stages with the vortex tube are pure Voit-Swmaster DNA.
Voit-Swimaster designs also have a strong US Diver (now Aqualung) heritage in them. Voit was a rubber company that made some of the rubber products for US Divers, while US Divers made the mechanical parts of the early Voit regulators (at least that is the stories I have heard and read, and you can tell from the design and manufacturing).
Voit-Swimaster did develop the vortex tube and other regulator designs separate from US Divers, but all the original designs were from US Divers.
That is why the HP seats for Aqua Lung (previously US Divers) and Mares (previously Voit) are interchangeable to this day.
The Swimaster MR-12 became the Mares MR-12. And a trivia piece of information: the "MR-12" stood for Military Regulator, one hose, two stages.
I just hope that Aqualung and Mares do not consolidate too many resources. I hope they maintain some independence. Aqualung name is too big, but if they start sharing too many resources, we are going to lose some creativity and some competition.
Some cooperation is OK… Like Huish Outdoor, with several of its brands…