Turtle Beach Z2 Volume Low

I recently purchased the Turtle Beach Z2 gaming headset for PC to replace my old X11's, but they are MUCH quieter than my X11's. If I turned my X11's volume to max and my systems volume options to max the headphones were unbearably loud (and still are, it was the mic that broke). If I use the max settings for the Z2's its quieter than the settings I would usually use for my X11's. Is this just a faulty pair? I can't imagine a newer headset that is almost double the price would be worse, then again its not impossible for companies to screw people over.

Any ideas or solutions for the matter are appreciated.