Legend octo and first stage question?

[ScubaScotty561]

Okay so i'm a bit confused on this. I have the legend octo and was wondering what kind of first stages i can use with it? Can it be used with a piston or do i have to get a balanced or what? I dont really know much about the different kinds of first stages so can someone help? Thanks!

 

[herman]

Pretty much any you want. It makes no difference if it's piston, diaphragm, balanced, unbalanced, brand X, Y or Z as long as the first stage intermediant pressure (IP) is within the range that second is designed for and pretty much everyone except Posiden uses 135-145 psi. Depending on the particular first and second stage it may need to be adjusted a little but that is not a big deal, that is the case pretty much any time you hook a first and second stage together for the first time. The only minor concern is if you use 2 different brands, you might have to take the reg to 2 different shops for service.