[SteveGam]

The easiest way to do this is to assign all the channels to the stereo bus (press the To Stereo) button on every channel, plug your phones into the x32 and turn it up. Another way would be to assign protools stereo bus out to one of the x32's aux inputs or stereo fx returns as their inputs can be patched to the FireWire card (or Usb). You may be using all 32 mic ins but there are 8 aux ins on the read panel that can be repatched to the FireWire or USB bus for your returns. I have not tried it but you may be able to repatch a matrix to a FireWire or USB stream. Behringers x32 forum is a great place to be asking these questions and you will likely get fast answers. Creating an account might take a day or two as every user is individually approved.