djm A9 master out

What do you mean by 'too low'? What is selected in the Master Out settings in the utility?

Djm 900nxs2 & V10 is louder then A9

but what is your setting for the A9 Master Out? But not sure why that matters even if this is the case. You got a PA behind. And the statement 'too low' is pretty subjective. I got an A9 and compared to the 900nxs2 I had before it is pretty similar. The V10 is a different kind of mixer. Not sure it should be compared that way and reducing it to the output of the master out. Just my 2 cents.